- Version 5 -
========================================================================================================
Refer to the exhibit. How many broadcast domains are shown?
*Three
====================================================
When using Category 5 UTP cable, which RJ-45 pin pairs are used to exchange data between hosts on an Ethernet network?
*1 and 2; 3 and 6
====================================================
Refer to the exhibit. A network administrator has configured a network after subnetting the network number 192.168.0.0/28. Workstation 1 is not able to communicate with Workstation 2. What is the cause of this loss in communications?
*Workstation 1 is not on the same network that the Router 1 LAN interface is on.
====================================================
Refer to the exhibit. The hub and the switch are operating using factory default settings. Which hosts will receive the frame if host A transmits a broadcast frame?
*Workstations B, C, D, E, and the router will receive the data.
====================================================
Refer to the exhibit. A network associate needs to establish an Ethernet connection between Host A and Host B. However, the distance between the two hosts is further than the cabling standards allow. Which two devices that operate at the physical layer of the OSI can be used to allow Host A and Host B to communicate? (Choose two.)
*hub
*repeater
====================================================
Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?
*IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17
====================================================
Which devices will create multiple collision domains in an Ethernet network? (Choose two.)
*switch
*router
====================================================
Refer to the exhibit. What is the order of the TCP/IP Protocol Data Units as data is moved as indicated through the OSI model?
*bits, frames, packets, segments, data
====================================================
Refer to the exhibit. The connections in the exhibit are labeled A through E. Which of these indicate LAN links? (Choose two.)
*link A
*link E
====================================================
Refer to the exhibit. Which type of UTP cable should be used to connect Host A to Switch1?
*straight-through
====================================================
A wireless workstation must scan to find an available access point. What are two characteristics of a wireless workstation in passive scanning mode? (Choose two.)
*The wireless node listens for beacons from an access point advertising an SSID and then attempts to join the network.
*The wireless node listens for a beacon from an access point with the same WEP key and is allowed to authenticate to the WLAN.
====================================================
ｂａｓｅd on the graphic above, which of the following occurs as each host system comes on line in the topology?
*The switch adds MAC address to the bridge table as each host sends a frame.
====================================================
How does a switch learn the addresses of hosts connected to its ports?
*The switch reads the source MAC address on incoming frames and records it in CAM.
====================================================
Refer to the exhibit. Which diagram represents the network topology that an administrator would prefer, and why would the administrator prefer it?
*Diagram A. It will better provide available bandwidth to the hosts.
====================================================
After an unsuccessful ping to the local router, the technician decides to investigate the router. The technician observes that the lights and fan on the router are not operational. In which layer of the OSI model is the problem most likely occurring?
*physical
====================================================
A user initiates three simultaneous FTP connections from the local host to the same FTP server. Which OSI layer is responsible for establishing and managing these different FTP connections?
*session
====================================================
Which technologies are considered to be LAN technologies? (Choose two.)
*Token Ring
*Ethernet
====================================================
A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
*172.16.192.160
====================================================
What is the correct number of usable subnetworks and hosts for the IP network address 192.168.35.0 subnetted with a /28 mask?
*14 networks / 14 hosts
====================================================
In the exhibit, the connections between the devices are labeled A, B, C, D, and E. For each connection, what is the correct UTP cable to use?
*A=rollover, B=straight, C=straight, D=crossover, E=crossover
====================================================
A network administrator has added a new switch to the network. The new switch connects to an existing switch that is already installed. Which UTP cable correctly connects the new switch to the existing switch?
*crossover
====================================================
How many collision domains are shown in the diagram?
*seven
====================================================
Refer to the exhibit. What must be configured on Host B to allow it to communicate with the file server? (Choose three.)
*a unique host IP address
*the subnet mask for the LAN
*the default gateway address
====================================================
Refer to the exhibit. Host A pings Host B. What can be concluded about the source and destination addresses contained in the communication sent by Router R5 when it forwards the ping out the Ethernet interface to Host B? (Choose two.)
*source MAC address: 5555.AAAA.6666
*destination IP address: 192.168.10.134
====================================================
What is the decimal representation of the binary number 11111000?
*248
====================================================
A large company has a network that is constantly changing. The routing tables in the routers need to be adjusted to reflect the changes in the routing paths. What type of routing would the network administrator implement?
*dynamic routing protocols
====================================================
Which network device creates the highest amount of latency?
*router
====================================================
Why do vendors utilize the OSI model when designing networking products?
*It ensures greater compatibility and interoperability with equipment from different vendors.
====================================================
Which type of address is 192.168.170.112/28?
*subnetwork address
====================================================
A router determines the path to deliver a packet. What layer of the OSI model does this fact represent?
*network
====================================================
What are important characteristics to consider when purchasing a network interface card? (Choose two.)
*media used on the network
*system bus used on the computer
====================================================
Which subnet masks could be used when subnetting a Class B IP address? (Choose two.)
*255.255.255.240
*255.255.192.0
====================================================
Refer to the exhibit. The network administrator wants to create a subnet for the point-to-point connection between the two routers. Which subnetwork mask would provide enough addresses for the point-to-point link with the least number of wasted addresses?
*255.255.255.252
====================================================
Which characteristics are common to both UDP and TCP? (Choose two.)
*uses port numbers
*classified as a transport layer protocol
====================================================
Refer to the diagram. Which statements describe the transfer of data between Host A and the HTTP server? (Choose three.)
*Host A uses UDP and creates a three-way handshake to synchronize sequence numbers. Window sizes are the same at the source and destination. The number of acknowledgments sent is less than or equal to the number of data segments received.
*Host A uses TCP and creates segments of data. Destination port numbers are assigned dynamically and the source port number will be fixed to 80.
*The transport layer is responsible for information flow control as well as establishing, maintaining, and terminating virtual connections between the client and server.
====================================================
Two peer hosts are exchanging data using TFTP. During the current session, a Cisco devices fails to arrive at the destination. Which statement is true regarding the retransmission of the Cisco devices?
*Cisco devices retransmission is controlled by the application.
====================================================
Which protocols are TCP/IP application layer protocols? (Choose two.)
*TFTP
*DNS
====================================================
Which of the following statements are correct about CSMA/CD? (Choose three.)
*It is a media access method used in LANs.
*When a device needs to transmit, it checks to see if the media is available.
*
Only one device can successfully transmit at a time.
====================================================
Consider the networks shown in the exhibit. Host A is sending packets to host B. Which layer of the OSI model is being used when the router is making the calculated decision to determine which interface to send the packet out?
*network
====================================================
An Ethernet host receives a frame, calculates the FCS, and compares the calculated FCS to the FCS received in the frame. The host finds that the two FCS values do not match. What action will be taken by the host?
*The host discards the frame.
====================================================
A computer technician is asked to make a network cable. One end of the cable is pinned as a 568A and the other as a 568B. For what purhuhus can this cable be used? (Choose two.)
*to connect a switch to a switch
*to connect a hub to a switch
====================================================
Why would a company install a switch instead of a hub when building or expanding a corporate network?
*A switch provides more bandwidth by sending frames only out the port to which the destination device is attached. A hub sends the frame out all ports except the source port.
====================================================
Refer to the exhibit. A newly hired technician has a task of terminating CAT 5 UTP cables. The network administrator visually examined the cables the technician terminated. Some of the cables have connectors as shown in the exhibit. What should the network administrator explain to the technician about the cables?
*The cable in Graphic A will produce more crosstalk.
====================================================
Refer to the topology in the graphic. Which characteristic does this type of topology possess?
*Communication continues in the event of a break in any one connection.
====================================================
Refer to the exhibit. What kind of Ethernet cable is represented?
*straight-through cable
====================================================
Which cable diagram displays the end to end pinout for a crossover cable used with Cisco devices?
*Cable C
====================================================
Refer to the exhibit. Workstation 1 pings the Fa0/1 interface of Router 1. Which MAC address will workstation 1 obtain during the ARP request for this communication?
*00-08-A3-B6-CE-02
====================================================
A technician is testing connectivity between the devices using the ping command. Pings between Host B and Host A were successful. The technician could not ping the R3 address 172.16.3.2 from Host A. The technician issued ipconfig from Host A and saw the information displayed in the exhibit. What is the most likely problem?
*The default gateway of Host A is incorrect.
====================================================
Refer to the exhibit. The physical documentation shows a portion of the internetwork of the ABC Company. Which segments will be free of collisions?
*segments 3, 4, and 5
====================================================
The ping command can be used to test connectivity between hosts. Which OSI model layers are verified by this test?
*Layers 1, 2 and 3
====================================================
Which physical network topology is easy to monitor and troubleshoot, easy to add new devices to as the network expands, but subject to complete failure when a central hub or switch ceases to work?
*star
====================================================
A network administrator has installed a 24 port switch and connected 10 computers with 10/100 NICs. If the NICs are operating at 100 Mbps, how much bandwidth is available for each computer to receive data?
*100 Mbps

- Version 4 -
========================================================================================================
Which cable diagram displays the end to end pinout for a console cable used with Cisco devices?
*Cable B
====================================================
How many broadcast domains are shown in the diagram?
*three
====================================================
Refer to the exhibit. How many collision domains are present in the topology?
*6
====================================================
What can be verified by successfully pinging the reserved loopback address on a host?
*The TCP/IP stack of the local host is installed correctly.
====================================================
When using Category 5 UTP cable, which RJ-45 pin pairs are used to exchange data between hosts on an Ethernet network?
*1 and 2; 3 and 6
====================================================
A collision has occurred on an Ethernet network. Which three statements explain the CSMA/CD process? (Choose three.)

====================================================
Which network device creates the highest amount of latency?
*router
====================================================
Why do vendors utilize the OSI model when designing networking products?
*It ensures greater compatibility and interoperability with equipment from different vendors.
====================================================
Which type of address is 192.168.170.112/28?
*subnetwork address
====================================================
A router determines the path to deliver a packet. What layer of the OSI model does this fact represent?
network
====================================================
What are important characteristics to consider when purchasing a network interface card? (Choose two.)

Which cable diagram displays the end to end pinout for a console cable used with Cisco devices?
*Cable B
====================================================
How many broadcast domains are shown in the diagram?
*three
====================================================
Refer to the exhibit. What device does Device X represent in the graphic to allow PC1 to ping PC4?
*router
====================================================
Refer to the exhibit. How many collision domains are present in the topology?
*6
====================================================
What can be verified by successfully pinging the reserved loopback address on a host?
*The TCP/IP stack of the local host is installed correctly.
====================================================
When using Category 5 UTP cable, which RJ-45 pin pairs are used to exchange data between hosts on an Ethernet network?
*1 and 2; 3 and 6
====================================================
A collision has occurred on an Ethernet network. Which three statements explain the CSMA/CD process? (Choose three.)
*After the jam signal, all transmission stops for a random period.
*When the backoff period expires, each host checks to see whether the networking media is idle and then attempts to transmit.
*When the collision is detected, the hosts continue to transmit using a jam pattern for a short time to ensure that all hosts detect the collision.
====================================================
A workstation is browsing a web server. What will be the partial contents of the segment sent from the workstation to the web server?
*source port 1026, destination port 80, sequence number 1, ack number 0
====================================================
Which protocols are TCP/IP application layer protocols? (Choose two.)
*FTP
*SMTP
====================================================
A company has the following addressing scheme requirements:
-currently has 25 subnets-uses a Class B IP address-has a maximum of 300 computers on any network segment-needs to leave the fewest unused addresses in each subnet
What subnet mask is appropriate to use in this company?
*255.255.254.0
====================================================
Refer to the exhibit. Host A has been added to the network. However, host A cannot communicate with the server B or the Internet. All cables have been tested and are functioning to standards. At which layer of the OSI model is this problem occurring?
*Layer 3
====================================================
Refer to the exhibit. Workstation 1 pings the Fa0/1 interface of Router 1. Which MAC address will workstation 1 obtain during the ARP request for this communication?
*00-08-A3-B6-CE-02
====================================================
When the receiving workstation detects an error in the data it has received, it does not acknowledge receipt of the data. The source workstation retransmits the unacknowledged data. Which layer of the OSI model supports this process of retransmission?
*transport
====================================================
Which subnet masks would be valid for a subnetted Class B address? (Choose two.)
*255.255.252.0
*255.255.255.192
====================================================
A network user is using the FTP protocol to transfer data from the local host to an FTP server. The local host is also using the SNMP protocol to report the system status to the network management system. Which statement describes the communication from the host?
*FTP uses TCP to establish a session before any data is transferred.
====================================================
A NIC of a computer has been assigned an IP address of 172.31.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
*172.31.192.160
====================================================
Which devices segment collision domains? (Choose two.)
*switch
====================================================
Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
*crossover cable
====================================================
Refer to the exhibit. What must be configured on Host B to allow it to communicate with the Host C? (Choose three.)
*a unique host IP address
*the default gateway address
*the subnet mask for the LAN
====================================================
Refer to the exhibit. The connections in the exhibit are labeled A through E. Which of these indicate WAN links? (Choose three.)
*link B
*link C
*link D
====================================================
Refer to the exhibit. Which type of UTP cable should be used to connect Switch1 to Switch2?
*crossover
====================================================
A user initiates three simultaneous FTP connections from the local host to the same FTP server. Which OSI layer is responsible for establishing and managing these different FTP connections?
*session
====================================================
Which layer of the OSI model defines the process of adding the source and destination IP address to a data packet?
*network
====================================================
Refer to the exhibit. What is the purpose of the highlighted address?
*It allows the NIC to communicate with other devices on the same network.
====================================================
What is the correct number of usable subnetworks and hosts for the IP network address 192.168.99.0 subnetted with a /29 mask?
*30 networks / 6 hosts
====================================================
Refer to the exhibit. Which type of cabling should be used at each of the connection points shown?
*A-straight-through B-crossover C-straight-through D-fiber E-straight-through
====================================================
Which combination of network id and subnet mask correctly identifies all IP addresses from 172.16.128.0 through 172.16.159.255?
*172.16.128.0 255.255.224.0
====================================================
Which binary number is a representation of the decimal number 248?
*11111000
====================================================
What are three characteristics of the TCP protocol? (Choose three.)
*forces the retransmission of unacknowledged packets
*creates a virtual session between end-user applications
*is responsible for breaking messages into segments and reassembling them at their destination
====================================================
Refer to the exhibit. A company needs to attach workstation E at a point 150 meters from an existing hub. What device should be placed at location D to allow the new host to connect to the network with the least amount of latency?
*repeater
====================================================
Refer to the exhibit. An instructor in the network class has given the students the network diagram and asks the students to select the appropriate network devices. The goals are to provide a collision-free LAN environment and to provide Internet connectivity. What is the correct design?
*Replace Box 1 with a Layer 2 switch and Box 2 with a router.
====================================================
A simplified CAM table for Switch1 is shown in the exhibit. If host A sends a frame with a destination MAC address of 66C, how does the switch process this frame?
*The switch sends the frame out ports 2, 3, and 4.
====================================================
Refer to the exhibit. A newly hired technician has a task of terminating CAT 5 UTP cables. The network administrator visually examined the cables the technician terminated. Some of the cables have connectors as shown in the exhibit. What should the network administrator explain to the technician about the cables?
*The cable in Graphic A will produce more crosstalk.
====================================================
Which of the following increases the potential for a collision to occur?
* an increase in the number of devices attached to the hub
====================================================
Which type of address is 223.168.17.167/29?
*multicast address
====================================================
Refer to the exhibit. The internetwork in the exhibit has been assigned the IP address 172.20.0.0. What would be the appropriate subnet mask to maximize the number of networks available for future growth?
*255.255.252.0
====================================================
Workstation A sends data to workstation B. What will have to be altered as the data passes through the router? (Choose two.)
*Layer 1 bit pattern
*Layer 2 frames
====================================================
What should a network administrator consider when migrating to Gigabit Ethernet architecture from Fast Ethernet? (Choose three.)
*Existing NICs might need to be upgraded.
*Existing switches might need to be upgraded.
*Existing UTP must be tested for CAT 5e compatibility.
====================================================
What type of routing is it when the network administrator manually configures a route?
*static
====================================================
Refer to the exhibit. A network administrator attempts to increase the available bandwidth for workstation A by setting the NIC to full-duplex mode. After the configuration is changed, there are increased collisions and errors occurring. Why is this occurring in the network?
*The hub will be continually producing a jam signal.
====================================================
Refer to the received frame in the exhibit. In what two ways is the information from the received frame used by a switch? (Choose two.)
*192.168.10.11 is left intact as the frame is forwarded.
*To make the forwarding decision, the switch looks in its switch table for address aaaa.bbbb.cccc.
====================================================
An IT administrator desires to install a Gigabit Ethernet link between the two buildings shown in the exhibit. Conflicting suggestions have been given to the administrator from a variety of sources. Which suggestion should the administrator adopt to ensure the success of this project?
*A combination of UTP, repeaters, and multimode optical fiber will reach 900 meters with Gigabit Ethernet.
====================================================
Refer to the exhibit. What is the order of the TCP/IP Protocol Data Units as data is moved as indicated through the OSI model?
*data, segments, packets, frames, bits
====================================================
Which technologies are considered to be WAN technologies? (Choose two.)
*DSL
*Frame Relay
===================================================
Which statement describes a star topology?
*Each host is connected to a hub or switch, either of which acts as a central point for all network connections.
====================================================
Refer to the exhibit. A network administrator is testing a connectivity issue in the network. The administrator discovers that host A cannot communicate with host B, host C, or RouterA. A ping command on host A to 127.0.0.1 succeeds. The NIC link indicator on host A is illuminated. Temporarily, the administrator removes the cable from host A and uses the LAN cable from host B to connect from host A to port 1 on the switch. While using the substitute cable, host A can communicate with host C and RouterA. At which layer of the OSI model was the problem occurring?
*physical
====================================================
Refer to the exhibit. What type of cable connects the two routers together without any intermediary device?
*crossover
====================================================
Refer to the exhibit. What is an advantage of using this type of topology?
*Network communication continues in the event of a break.
====================================================
Refer to the exhibit. Host A is being manually configured for connectivity to the LAN. Which two addressing scheme combinations are possible configurations that can be applied to the host for connectivity? (Choose two.)
*Address - 192.168.1.82 Gateway - 192.168.1.65
*Address - 192.168.1.70 Gateway - 192.168.1.65
====================================================
Which of the following devices extend a collision domain? (Choose two.)
*hub
*bridge-(check)
*repeater
====================================================
A technician needs to connect a FastEthernet port from a router to a FastEthernet port on a switch. The graphic shows the RJ-45 cable ends for a patch cable. What result can be expected if this cable is used for the link?
*The cable will be able to pass traffic between the devices.
====================================================

1 Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.

85
90
* BA
A1
B3
1C

2 Convert the Hexadecimal number A2 into its Base 10 equivalent. Select the correct answer from the list below.

156
158
160
* 162
164
166

3 Select the necessary information that is required to compute the estimated time it would take to transfer data from one location to another. (Choose two.)

* file size
data format
network in use
type of medium
* bandwidth of the link

4 Using the data transfer calculation T=S/BW, how long would it take a 4MB file to be sent over a 1.5Mbps connection?

52.2 seconds
* 21.3 seconds
6.4 seconds
2 seconds
0.075 seconds
0.0375 seconds

5 What are features of the TCP/IP Transport layer? (Choose two.)

path determination
handles representation, encoding and dialog control
* uses TCP and UDP protocols
packet switching
* reliability, flow control and error correction

6 Which combinations of charges will be repelled by electric force? (Choose two.)

neutral and neutral
neutral and positive
neutral and negative
* positive and positive
positive and negative
* negative and negative

7 Which of the following are considered the best electrical conductors for use in data network communications? (Choose three.)

glass fibers
* copper
* gold
plastic
silicon
* silver

8 During cable testing, which of the following are used to calculate the information carrying capacity of a data cable? (Choose two.)

bit speed
* attenuation
wire map
saturation limit
* analog bandwidth

9 The highest capacity Ethernet technologies should be implemented in which areas of a network? (Choose three.)

between workstation and backbone switch
between individual workstations
* between backbone switches
* between enterprise server and switch
* on aggregate access links

10 What device must be used between an AUI port of a networking device and the media to which it is being connected?

a transducer
a transmitter
* a transceiver
a transponder
a port replicator

11 An ISDN Basic Rate Interface (BRI) is composed of how many signaling channels?

* 1
2
3
4

12 Which of the following items are common to all 100BASE technologies? (Choose three.)

* frame format
media
connectors
* timing
* multi-part encoding

13 Which of the following does 1000BASE-T use to accomplish gigabit speeds on Cat 5e cable?

the use of four conductors in full-duplex mode
the use of two multiplexed pairs of wires, simultaneously
the use of three pairs of wires for data and the fourth for stabilization and forward error correction
* the use of all four pairs of wires in full-duplex mode, simultaneously

14 For which of the following is Ethernet considered the standard? (Choose three.)

* inter-building connection
mid-length voice
video conferencing
* vertical wiring
* horizontal wiring
diagonal wiring

15 John has been hired as the network administrator of a local company and has decided to add more hubs to the company's existing network. Which of the following has been caused by John's inexperience?

* collision domain extended
an increased number of collision domains
increased network performance
increased bandwidth
extended bandwidth

16 "CompA" is trying to locate a new computer named "CompB" on the network. Which of the following does "CompA" broadcast to find the MAC address of "CompB"?

MAC request
* ARP request
ping
Telnet
proxy ARP

17 Which of the following is a term associated with replacing hubs with switches to increase the number of collision domains?

encapsulation
latency
* segmentation
layered model
broadcast domain
extended

18 The accumulation of traffic from which of the following can cause a network condition called broadcast radiation? (Choose three.)

anonymous FTP servers
telnet sessions
* video over IP applications
NAS services
* ARP requests
* RIP updates

19 Which of the following describes the use of Spanning Tree Protocol (STP)?

resolve routing loops
eliminate Split Horizon errors
limit collisions
* resolve switching loops

20 Which term describes an ARP response by a router on behalf of a requesting host?

ARP
RARP
* Proxy ARP
Proxy RARP

21 Which OSI layer encapsulates data into packets?

session
transport
* network
data link

22 Which OSI layer defines the functions of a router?

physical
data link
* network
transport
session

23 Which of the following are Cisco proprietary routing protocols? (Choose two.)

RIPv2
* IGRP
OSPF
BGP
RIPv1
* EIGRP

24 A company with a Class B license needs to have a minimum of 1,000 subnets with each subnet capable of accommodating 50 hosts. Which mask below is the appropriate one?

255.255.0.0
255.255.240.0
255.255.255.0
* 255.255.255.192
255.255.255.224

25 A small company has a class C network license and needs to create five usable subnets, each subnet capable of accommodating at least 20 hosts. Which of the following is the appropriate subnet mask?

255.255.255.0
255.255.255.192
* 255.255.255.224
255.255.255.240

26 When a network administrator applies the subnet mask 255.255.255.248 to a Class A address, for any given subnet, how many IP addresses are available to be assigned to devices?

1022
510
254
126
30
* 6

27 If a network administrator needed to download files from a remote server, which protocols could the administrator use to remotely access those files? (Choose two.)

NFS
ASCII
* TFTP
IMAP
* FTP
UDP

28 What is established during a connection-oriented file transfer between computers? (Choose two.)

a temporary connection to establish authentication of hosts
* a connection used for ASCII or binary mode data transfer
a connection used to provide the tunnel through which file headers are transported
a command connection which allows the transfer of multiple commands directly to the remote server system
* a control connection between the client and server

29 Which of the following protocols are used for e-mail transfer between clients and servers? (Choose three.)

TFTP
SNMP
* POP3
* SMTP
* IMAP4
postoffice

30 What type of wiring problem is depicted in this sample of a cable tester?

a fault
a short
* an open
a split
a good map

31 Which layer of the OSI model covers physical media?

* Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
Layer 6

32 What type of network cable is used between a terminal and a console port?

cross-over
straight-through
* rollover
patch cable

33 What does the "10" in 10Base2 indicate about this version of Ethernet?

The version uses Base10 numbering within the frames.
* The version operates at a transmission rate of 10 Mbps.
Frames can travel 10 meters unrepeated.
The maximum frame length is 10 octets.

34 How is a MAC address represented?

four groups of eight binary digits separated by a decimal point
four Base10 digits separated by a decimal point
six hexadecimal digits
* twelve hexadecimal digits
twenty-four Base10 digits

35 To make sure timing limitations are not violated when implementing a 10 Mbps Ethernet network involving hubs or repeaters, a technician should adhere to which rule?

the 4-5-3 rule
the 6-4-2 rule
the 3-4-5 rule
* the 5-4-3 rule

36 Which of the following wireless standards increased transmission capabilities to 11 Mbps?

802.11a
* 802.11b
802.11c
802.11d

37 Which protocol functions at the internet layer of the TCP/IP protocol suite?

File Transfer Protocol (FTP)
Trivial File Transfer Protocol (TFTP)
Transmission Control Protocol (TCP)
* Internet Protocol (IP)
User Datagram Protocol (UDP)
Simple Mail Transport Protocol (SMTP)

38 Which of these workstation installation and setup tasks are concerned with network access layer functions? (Choose two.)

configuring the e-mail client
* installing NIC drivers
configuring IP network settings
* connecting the network cable
using FTP to download application software updates

39 Which part of an IP address identifies a specific device on a network?

first two octets
third and fourth octets
network portion
* host portion
only the fourth octet

40 Which of the following are features of the Internet Protocol (IP)? (Choose two.)

* It is the most widely implemented global addressing scheme.
It allows two hosts to share a single address on a local area network.
* It is a hierarchical addressing scheme allowing addresses to be grouped.
It is only locally significant, used primarily on local area networks.

41 In a new network installation, the network administrator has decided to use a medium that is not affected by electrical noise. Which cable type will best meet this standard?

coaxial
screened twisted pair
shielded twisted pair
unshielded twisted pair
* fiber optic

42 What is the recommended maximum number of workstations configured on a peer-to-peer network?

25
15
* 10
5
2

43 What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?

* 100 meters
185 meters
300 meters
500 meters

44 Which type of institution does the domain suffix .org represent?

government
education
network
* non-profit

45 Which of the following services is used to translate a web address into an IP address?

* DNS
WINS
DHCP
Telnet

46 Which part of the URL http://www.awsb.ca/teacher gives the name of the domain?

www
http://
/teacher
* awsb.ca

47 Which of the following will test the internal loopback of a node?

ping 10.10.10.1
ping 192.168.1.1
* ping 127.0.0.1
ping 223.223.223.223
ping 255.255.255.255

48 Which of the following is the Layer 4 PDU?

bit
frame
packet
* segment

49 Which of the following are small, discrete components found within a personal computer? (Choose three.)

* transistor
microprocessor
power supply
* capacitor
* light emitting diode
hard disk

50 What is important to remember about the data link layer of the OSI model when considering Peer to Peer communication? (Choose three.)

It links data to the transport layer.
It encapsulates frames into packets.
* It provides a service to the network layer.
* It encapsulates the network layer information into a frame.
* Its header contains a physical address which is required to complete the data link functions.
It encodes the data link frame into a pattern of 1s and 0s (bits) for transmission on the medium.

51 Which of the following are useable Class A IP addresses with a default subnet mask? (Choose three.)

127.0.39.1
* 111.9.28.30
* 123.1.2.132
128.50.38.2
* 105.1.34.1
0.23.92.3

 

-------------------------------------------------------------------------
1
Which of the following OSI layers offers reliable, connection-oriented data communication services?

application

presentation

session

*transport

network
--------------------------------------------------------------------
2
Router interface Ethernet 0 has been assigned the IP address 10.172.192.168 255.255.255.240. What is the network IP address of this interface?

10.0.0.0

10.172.0.0

10.172.192.0

*10.172.192.160

10.172.192.168

10.172.192.175
--------------------------------------------------------------------
3
Examine the graphic with current configurations. The New York Offices of ABC Company recently upgraded the computers in the administrative office. Shortly after the upgrade, Host A in the clerical office failed and was replaced with one of the retired administrative office computers. However, the computer can not access the company network in the new location. What is the likely cause of this network access issue for Host A?

MAC address incorrectly entered

*default gateway incorrectly entered

subnet mask incorrectly entered

IP address incorrectly entered

 

4
Which of the following increases the potential for a collision to occur?

the use of an active hub instead of an intelligent hub

the use of an intelligent hub instead of an active hub

a reduction in the number of devices attached to the hub

*an increase in the number of devices attached to the hub *
--------------------------------------------------------------------
5
What is attenuation?

opposition to the flow of current

measurement of electrical signals relative to time

*degradation of a signal as it travels along the medium

amount or volume of traffic that is flowing on the medium
--------------------------------------------------------------------
6
Two peer hosts are running applications that exchange data using UDP. During the current session, a datagram fails to arrive at the destination. What is true concerning the retransmission of the datagram?

Datagram retransmission occurs when the retransmission timer expires in the source host.

Datagram retransmission occurs when the retransmission timer expires in the destination host.

*Datagram retransmission is controlled by the application layer protocol.

Datagram retransmission involves only the data with sequence numbers equal to or higher than the sequence number of the current datagram.
--------------------------------------------------------------------
7
What is significant about the ping 127.0.0.1 command?

*It verifies the operation of the TCP/IP protocol stack on a host and is called an internal loopback test.

It verifies connection to the remote host with the IP address 127.0.0.1.

It verifies whether the router that connects the local network to other networks can be reached.

It verifies the route packets take between the local host and the host with the IP address 127.0.0.1.

8
Which LAN switching mode has the highest latency?

fast forward

fragment-free
latency forwarding
*store-and-forward
--------------------------------------------------------------------
9
Which of the following application layer protocols use UDP segments? (Choose two.)

*DNS

FTP

Telnet

*TFTP

SMTP
--------------------------------------------------------------------
10
Which cable specifications are indicated by 100BASE-T?

100-Mbps transmission speed, baseband signal, coaxial cable

100-Mbps transmission speed, broadband signal, twisted-pair cable

*100-Mbps transmission speed, baseband signal, twisted-pair cable

Equal to 10-Gbps transmission speed, baseband signal, twisted-pair cable
--------------------------------------------------------------------
11
When is a crossover cable used in a network?

when connecting a host to the router console port

when connecting a host to a switch

*when connecting a host to a host

when connecting a switch to a router

12
Refer to the graphic. What must be configured on Host A to allow it communicate with the e-mail server? (Choose three.)

IP address *

subnet mask *

default gateway *

router name

switch name

NetBIOS name address
--------------------------------------------------------------------
13
Which cable diagram displays the end to end pinout for a crossover cable used with Cisco devices?

Cable A

Cable B

*Cable C

Cable D
--------------------------------------------------------------------
14
Which type of address is 192.168.17.134/29?

*host address

network address

broadcast address

multicast address

15
How many collision domains are shown in the diagram?

three

four

five

six

*seven

eight
--------------------------------------------------------------------
16
When is a straight-through cable used in a network?

when connecting a router through the console port

when connecting one switch to another switch

*when connecting a host to a switch

when connecting a router to another router
--------------------------------------------------------------------
17
How does network cable length affect attenuation?

Category 5 cable that is run in metal conduit has the highest attenuation in the shortest distance.

Shorter cable lengths have greater signal attenuation.

*Longer cable lengths have greater signal attenuation.

The length of the cable has no effect on signal attenuation.

18
Which of the following statements are correct about CSMA/CD? (Choose three.)

It is a media access method used in LANs. *

It is a media access method used in FDDI WANs.

When a device needs to transmit, it checks to see if the media is available. *

A device sends data without checking media availability because all devices have equal access. Multiple devices can successfully transmit simultaneously.

*Only one device can successfully transmit at a time.
--------------------------------------------------------------------
19
Which of the following must be present for current to flow? (Choose three.)

*closed loop

bit-generating device

insulating material

*source of voltage

*load

switch
--------------------------------------------------------------------
20
If Host A pings Host B through a newly installed switch with no entries in the MAC address table, which stations will receive the ping packet?

B only

A and B

B and switch

A, B, and switch

B, C, D, and switch *

A, B, C, D, and switch

21
Which devices shown in the graphic must have a MAC address?

only PC

only router

PC and router

PC, hub, and router

*PC, printer, and router
--------------------------------------------------------------------
22
What kind of connection is represented in the graphic?

*console connection

Ethernet connection

ISDN connection

leased line connection
--------------------------------------------------------------------
23
Which of the following is the decimal representation of the binary number 11010011?

203

204

*211

212
--------------------------------------------------------------------
24
Which type of cable is required to make a connection between a router console port and a PC COM port?

straight-through cable

crossover cable

*rollover cable

DB-9 cable

coaxial cable

25
Determine the number of useable networks and hosts for the IP address 192.168.50.0/27

4 networks / 62 hosts

6 networks / 64 hosts

32 networks / 8 hosts

*6 networks / 30 hosts

8 networks / 32 hosts

2 networks / 8 hosts
--------------------------------------------------------------------
26
A network administrator is placing an older router back in to service. The administrator discovered that the IOS and configuration files need to be updated to meet the LAN specifications. Which application layer protocol is used to transfer the new configuration files into the router memory?

SNMP

SMTP

HTTP

*TFTP
--------------------------------------------------------------------
27
Which of the following best describes Spanning Tree Protocol?

It enables a network to span across multiple physical segments.

*It enables a switch to eliminate switching loops.

It enables a switch to dynamically choose the best switch mode.

It enables a switch to perform as a router.
--------------------------------------------------------------------
28
Which of the following subnet masks could be used when subnetting a Class B IP address? (Choose two.)

255.0.0.0

*255.255.0.0

255.192.255.0

255.224.0.0

*255.255.252.0

255.255.255.128
--------------------------------------------------------------------
29
How is data encapsulated as it is moved down the OSI model?

data, segments, frames, packets, bits

data, packets, segments, frames, bits

*data, segments, packets, frames, bits

data, packets, frames, segments, bits
--------------------------------------------------------------------
30
Which of the following describes latency?

the noise generated from outside a cable

the degradation of a signal as it travels along the media

the time required for a NIC to place a frame on the network media

*the delay between the time a frame leaves its source device and reaches its destination
--------------------------------------------------------------------
31
Which of the following is the binary representation of the decimal number 111?

*01101111

01111101

11110111

11101101
--------------------------------------------------------------------
32
Which LAN switching mode begins switching after reading only the first 64 bytes of the frame?

fast forward

*fragment-free

latency forwarding

store-and-forward

33
When using Category 5 UTP cable, which RJ-45 pin pairs are used to exchange data between hosts on an Ethernet network?

1 and 2; 4 and 5

1 and 2; 3 and 6 *

3 and 6; 7 and 8

4 and 5; 7 and 8
--------------------------------------------------------------------
34
Which of the following commands could be used on a Windows-based computer to view the current IP configuration of the system? (Choose two.)

configip

ifconfig

*ipconfig

*winipcfg

winipconfig
--------------------------------------------------------------------
35
Which type of address is 192.168.17.111/28?

host address

network address

*broadcast address

multicast address

36
Which of the following networking devices increase the number of collision domains? (Choose three.)

*switch
hub
*router
repeater
*bridge
--------------------------------------------------------------------
37
What information can be determined from the MAC addresses of PC1, PC2, and PC3, as shown in the graphic? (Choose two.)

PC1 and PC2 NICs need to be replaced because they have the same OUI identifier.

PC2 and PC3 NICs need to be replaced because they have different OUI identifiers.

*PC1 and PC2 NICs are from the same vendor.

PC1 and PC3 NICs need to be replaced because they have the same vendor-assigned address.

*PC2 and PC3 NICs are from different vendors.

PC2 and PC3 NICs are from the same vendor.
--------------------------------------------------------------------
38
Which of the following are considered WAN technologies? (Choose two.)

*DSL

Ethernet

Wireless Ethernet

*T1-Carrier

Token Ring
39
which one of the router connectors shown in the graphic would be used for a LAN connection?

Connector A

Connector B

*Connector C

Connector D
--------------------------------------------------------------------
40
How is full-duplex capability typically achieved in fiber-optic cable?

*Two fibers are encased in separate sheaths.

Light is bounced at different rates in opposite directions.

Transmit speeds are so high that half-duplex is acceptable.

Colors of the light spectrum are separated into transmit and receive streams.
--------------------------------------------------------------------
41
Which of the following are characteristics of IP? (Choose three.)

connection-oriented protocol

connectionless protocol*

reliable protocol

unreliable protocol *

routed protocol *

routing protocol
--------------------------------------------------------------------
42
Which of the following describe the token-passing logical topology? (Choose two.)

*FDDI is an example of a token-passing network.

Token-passing logical topologies must also be physical ring topologies.

One of the disadvantages of the token-passing logical topology is the high collision rate.

Computers transmit data after "listening" to the wire to detect other traffic.

*Computers are allowed to transmit data only when they possess a token.

43
What is the maximum length of a media segment used for 100BASE-TX?

*100 meters

185 meters

400 meters

500 meters
--------------------------------------------------------------------
44
which of the following networking devices divide a network into separate collision domains? (Choose two.)

repeater

*bridge

*switch

AUI

hub
--------------------------------------------------------------------
45
Which of the following are characteristics of UTP cable? (Choose three.)

*Each wire is covered by insulating material.

It is not affected by EMI or RFI.

*It is a four-pair wire medium.*

It is difficult to terminate the cable.

*It relies on the cancellation effect produced by the twisted wire pairs.

It is more expensive than any other type of LAN cabling.

46
Examine the graphic with current configurations. Host A in the Clerical offices failed and was replaced. Although a ping to 127.0.0.1 was successful, the replacement computer can not access the company network. What is the likely cause of the problem?

IP address incorrectly entered

network cables unplugged

*subnet mask incorrectly entered

network card failure
--------------------------------------------------------------------
47
Which of the following describes a physical full-mesh topology?

It requires termination at both ends of the cable.

It uses a hub or a switch as a central point to connect all wires.

*It provides maximum connectivity between all network systems.

It links all computers to a main computer that controls all traffic on the network.
--------------------------------------------------------------------
48
Which two statements describe the TFTP protocol? (Choose two.)

uses authenticated file transfer procedure

provides connection-oriented service

*provides connectionless service

provides more features that FTP

*lacks most of the features of FTP
--------------------------------------------------------------------
49
Which of the following are transport layer protocols of the TCP/IP model? (Choose two.)

FTP
*UDP
SMTP
TFTP
*TCP

 

50
Which type of UTP network cable connects two Cisco switches?

straight-through

*crossover

rollover

patch
--------------------------------------------------------------------
51
How will the MAIN router dynamically learn a route to the 10.16.10.48/28 subnetwork in the diagram?

with a routed protocol

*with a routing protocol

with a static route

with a directly connected route
--------------------------------------------------------------------
52
Which of the following describes the RIP version 1 routing protocol?

Cisco proprietary hybrid protocol

*distance vector protocol that uses hop count as the only metric *

link state protocol supporting multiple routed protocols

distance vector protocol that uses delay, bandwidth, load, and reliability metrics
--------------------------------------------------------------------
53
How many broadcast domains are shown in the diagram?

*three

four

five

six

seven

eight

54
Which of the following are advantages of UTP cable? (Choose three.)

*less expensive than fiber optic

*flexible and easy to run in a building

distance between signal boosts is longer than it is for coaxial

*transmits data at a faster rate than any copper-based media

receives less RMF and EMI interference than other types
--------------------------------------------------------------------
Which of the following devices extend a collision domain? (choose 2)
*-hub
*-repeater

 

Hello! Project，中文一般译为早安家族，是日本著名经纪公司UFA（Up-Front Agency）旗下的巨型女子流行歌曲偶像团体，以早安少女组为旗舰（惟近年情况开始有变），其他单位尚包括个人歌手松浦亚弥、前田有纪，以及一些其他组合，包括乡村少女组、椰果少女组、哈密瓜记念日、W和美勇传等，另有由十五名女小学生组成的歌唱组合Hello! Project Kids（其中八位成员另外再组成Berryz工房，另外七人则另外组成℃-ute）。部份成员分别红成一队女子足垒球队Metro Rabbits H.P.，以及一队女子足球队Gatas Brilhantes H.P.。除此之外，Hello! Project尚有数十位“准成员”正接受训练并等候出道。

由于Hello! Project成员人数众多，兼且全部是女生，并极具人气，以上特征皆足以跟专产男艺人的Johnny's事务所分庭抗礼，故被誉为“女版Johnny's”。

组成背景及团名由来

在1997年，东京电视台在其综艺节目《五花八门浅草桥》（ASAYAN）中，举办一个称为《射乱Q摇滚女主唱选拔赛》，当时由平家充代胜出，及五位落败者——中泽裕子、石黑彩、福田明日香、安倍夏美及饭田圭织被现时的经理人提出出道可能,在另一电视节目里贩卖得指定数目所能出道。组成早安少女组。后来，UFA为平家充代和早安少女组。成立联合歌迷会“Hello!”，后来与包括乡村少女组、椰果少女组、太阳与月亮（T&C Bomber）等其他相关组合改组成现时的Hello! Project，并不断发展成现时的形态。

Hello! Project本来一直以早安少女组。为旗舰，惟随著其较为资深的成员先后离队成为个人歌手，近年情况开始有变，各单位的发片率及曝光率逐步变得平均。

今天终于会自己打了,虽然学了老半天,但还是学会了,哈哈

温莎结的打法图解

1. 开始时领带的大领应该放在您的右边，而小领则应该放在您的左边。

2. 把大领跨在小领之上，形成三个区域（左、右、中）。

3. 把大领翻到小领之下，到达中区域。

4. 把大领翻出至右区域。

5. 把大领从小领之下由右翻到左。

6. 把大领翻上到中区域。

7. 把大领从领带结之下由中翻到右。

8. 把大领翻到前面至左区域。

9. 把大领翻到小领之下，由左至中。

10. 把大领穿过前面的圈，并束紧领带结。

11. 一只手轻拉着小领前端，另一只手把领带结移至衣领的中心。

过年的作业回到学校就开始补,补啊~~~补啊~~~~补啊补.......补到现在都没有补完....

做完一个就多出两个作业来,书都没有时间看.

转眼之间,CCNA已经第九次作业了,偶还在第六个待着,连夜看书,待早上一开网就搞定两次作业.结果还令人满意.

OS那个作业啊,也算是赶完了,现在就剩看书和等待第六次作业了.不过再过一周就要考试了,不看也不行啊,貌似之后再过3周就要期末考了....

人机交互有Project了,40分啊,不做必定挂课,加油了,頑張れ！！

 

先报道着这里.

美国游戏分级组织ESRB资料介绍

ESRB（http://www.esrb.org/）：全称Entertainment Software Rating Board（娱乐软件分级审查协会）。协会成立于一九九四年，针对北美地区的电脑游戏及电视游戏执行分级评定。ESRB分级评定分为两部分，一为分级象征——该游戏适宜的游戏人群进行年龄限制；二为内容描述，显示该游戏的游戏内容。根据这些要素在游戏中的表现程度，美国将电玩分为：

EC(Early Childhood)级，适合3岁以上，不含有任何家长会觉得不恰当的内容；

E(Everyone)级，适合6岁以上，含有少量的卡通、幻想、轻微暴力和温和的语言；

E10+ (Everyone 10 and older)，适合十岁以上的含有更多的卡通、幻想、轻微暴力和温和的语言，还有少量启发性的主题；

T(Teenagers)级，适合13岁以上，含有暴力、启发性的主题、黑色幽默、少量血腥场面和少量亵渎性语言；

M(Mature)级，适合17岁以上的玩家，还有强烈的暴力、血肉模糊的场面、性、和亵渎性语言；

AO(Adult Only)级，只适合18岁以上，含有大量暴力、性和裸体。

RP (Rating Pending)级，已经提交到ESRB并在等待评级结果。（只在游戏发售前的广告中出现）

定级流程
　　 为了获得等级认定，一个游戏发行商需要向ESRB提交非常完整的的关于游戏的图片和内容。然后三个评估人，根据评估标准进行独立的审核，最后推荐一个等级。如果所有的评估人达成一致，那么ESRB将把内容评价书通知游戏发行商。

当游戏正式发行以后，发行商需要给ESRB一份正式的版本。游戏的包装将被从新的考虑，ESRB的专家将玩这款游戏去保证所有的评估是完全和正确的。

ESRB评估员的身份是值得信任的。这些定级者代表着具有广泛背景、种族和年龄层的玩家，并且与互动娱乐业无关。他们包括退休的学校校长、家长、专家和其它领域的个人。

定级目的
　　 ESRB定级的目的是为了向消费者提示互动视频或电脑娱乐软件的内容适合怎样的年龄层，而不是为了告诉消费者应该购买或租借怎样的产品，也不是作为选择产品的唯一依据。除ESRB等级外，消费者应该参考游戏的包装盒以获取更多的产品信息，并根据自己的口味和标准作出最后的购买或租借决定。
　　
分级实施·等级

包装盒的正面有ESRB的等级标志，这一标志显示了该游戏所适合的年龄段范围；
　　
内容描述
　　 ESRB的分级共有32种描述，这些描述使 用户能更准确和迅速地明白软件的内容，并配以相应的标签标在游戏包装盒背面，以提醒消费者注意。这些描述包括：
·Alcohol Reference：涉及含有酒精的饮料；

·Animated Blood：出现经过脱色的血或者对血的不真实描述；

·Blood：流血场面；

·Blood and Gore：出现血和被切开的人体组织；

·Cartoon Violence：涉及卡通角色的暴力场面，可能有角色在受到攻击后安然无恙的情节；

·Comic Mischief：含有闹剧或启发性的幽默内容；

·Drug Reference：出现非法药物（毒品）；

·Edutainment：培养或者教会使用者的一些技能，产品的主要内容是针对使用者的技能发展；

·Fantasy Violence：涉及到一些包含人类或者非人类角色的暴力场景，但是很容易与真实区分；

·Informational：全部涉及产品信息资料或知道类文件；

·Intense Violence：涉及视觉上真实的肢体冲突，可能包含真实的血、受伤人体组织、武器、人类受伤或者死亡的描述；

·Language：包含少量到中量的亵渎类语言；

·Lyrics：歌词中少量涉及性、暴力、酒精或毒品；

·Mature Humor：涉及可能包含性的成人幽默；

·Mild Violence：角色将出现在不安全或暴力的场景中；

·Nudity：涉及到裸体；

·Partial Nudity：涉及少量裸体；

·Real Gambling：玩家可以赌博，包括用真钱或可流通货币打赌和下注；

·Sexual Themes：包含少量到中等的性描写，可能包含部分裸体；

·Sexual Violence：涉及强奸或其他性行为；

·Simulated Gambling：玩家可以在不使用真钱或可流通货币打赌和下注的情况下赌博；

·Some Adult Assistance May Be Needed：可能需要家长辅助，适合低龄儿童；

·Strong Language：直接和频繁的出现亵渎的语言；

·Strong Lyrics：直接和频繁的在歌词中涉及性、暴力、酒精或毒品；

·Strong Sexual Content-画面涉及或描述可能包含裸体的性行为；

·Suggestive Themes：少量可能引起争论的内容或资料；

·Tobacco Reference：包含烟草产品的画面；

·Use of Drugs：涉及使用毒品；

·Use of Tobacco：涉及消费烟草产品；

·Violence：涉及恶意伤害冲突的画面；

编译/www.idggame.com.cn|xly747

使用计算机过程中在所难免会遇到各种疑难杂症，如果硬盘分区出现故障怎么办呢?

由于分区故障，很有可能开启计算机时无法进入熟悉的Windows界面，甚至通过系统启动盘也无法正常识别硬盘，这时候大家肯定都会束手无策吧。

如果贸然对硬盘进行重新分区操作，固然能够彻底解决问题，不过硬盘中的所有重要资料也会随之灰飞烟灭。如果你不幸遇到硬盘的分区故障，先别急着重新分区，按照下文介绍的方法来尝试一下，没准儿会有个意外的惊喜呢。

分区表故障急救策略

1.查杀病毒

如果是由于引导区病毒造成分区表故障，则可以借助KV3000、瑞星、金山等杀毒软件提供的引导软盘启动计算机，接着在DOS环境中对系统进行病毒查杀操作。比如用KV3000的引导盘启动计算机之后输入“KV3000/K”命令进行病毒扫描，如果发现引导区存在病毒，则程序会自动进行查杀清理，建议同时对整个系统进行完整的扫描以查找出隐藏的病毒。一般说来，将引导区中残留的病毒清除之后即可恢复计算机的正常使用。

提示：使用软盘引导计算机之前一定要将软盘的写保护关闭，否则有可能导致病毒感染软盘。

2.用Fdisk命令修复

Fdisk不仅是一个分区程序，它还有着非常便捷的恢复主引导扇区功能，而且它只修改主引导扇区，对其他扇区并不进行写操作，因此对于那些还在使用Windows 9x的朋友而言无疑是个非常理想的分区表修复工具。通过Fdisk修复主引导区的时候，先用Windows 98启动盘启动系统，在提示符下输入“Fdisk /mbr”命令即可覆盖主引导区记录。

提示：“Fdisk /mbr”命令只是恢复主分区表，并不会对它重新构建，因此只适用于主引导区记录被引导区型病毒破坏或主引导记录代码丢失，但主分区表并未损坏的情况使用。而且这个命令并不适用于清除所有引导型病毒，因此使用的时候需要注意。

3.用Fixmbr修复引导记录

在Windows 2000/XP中，我们一般会用到故障恢复控制台集成的一些增强命令，比如Fixmbr用于修复和替换指定驱动器的主引导记录、Fixboot用于修复知道驱动器的引导扇区、Diskpart能够增加或者删除硬盘中的分区、Expand可以从指定的CAB源文件中提取出丢失的文件、Listsvc可以创建一个服务列表并显示出服务当前的启动状态、Disable和Enable分别用于禁止和允许一项服务或者硬件设备等等，而且输入“help”命令可以查看到所有的控制命令以及命令的详细解释。

比如输入“fixmbr”命令可以让控制台对当前系统的主引导记录进行检查，然后在“确定要写入一个新的主启动记录吗?”后面输入“Y”进行确认，这样就完成了主引导记录的修复。

4.更换工具调整分区

在删除分区或者是重新创建分区的时候，如果遇到意外原因死机或断电，这时候再使用原先的工具可能无法识别当前硬盘的分区表，必须更换另外一款分区表软件进行修复。比如我们通过Fdisk分区时意外死机，这时候再通过Fdisk就无法顺利进行，可以采用PQMagic之类的第三方分区软件解决。另外需要提醒大家注意的是，分区表对于系统的正常稳定运行影响非常大，一般情况下最好不要采用DM之类快速分区格式化软件，否则有可能导致后期使用过程中频频出现意想不到的麻烦。 　　5.通过KV3000硬盘救护王修复

KV3000硬盘救护王是KV3000套件中提供的一款硬盘急救软件，在分区表出现故障的时候可以通过它进行修复。用KV3000软盘引导计算机之后，在DOS提示符状态下输入“KV3000”命令，并且从出现的主菜单中按下“F10”键，此时可以看见程序对系统的有关参数和硬盘分区表快速测试的画面。如果硬盘分区表正常，则会显示“Hard Disk Partition table - OK”信息，否则会依据分区表故障类型给出相应的信息，这时可以按下“F6”按钮查看硬盘分区表，或者直接按下“Y”按钮进行引导扇区的修复操作。而且为了安全起见，程序在修复前会让你先备份当前的硬盘分区表，然后才会真正对硬盘分区表进行修复操作。

提示：但是如果硬盘只有一个分区，而且文件分配表和文件根目录表已经被病毒严重破坏，那么即使恢复了C盘分区表也不能使C盘引导，此时需要手工配合其他专用修复软件来恢复数据。如果还有D、E等扩展分区，KV3000一般都能找回后面没有被破坏的分区并重建一个新的硬盘主分区表，这时再用DOS系统软盘引导计算机就可进入硬盘的D、E等分区。

虽然分区表故障属于系统软故障，也可以通过上述提及的方法进行尝试性修复，但这毕竟不是灵丹妙药，对于一些破坏性非常强的分区表病毒或者是由于其它原因导致分区表损坏，这时只能通过重新对硬盘分区来解决。

用KV3000备份恢复分区表

KV3000虽然是个防杀病毒软件，它也具有非常强的分区修复的能力，而且它还能进行系统分区的备份。这样，即使硬盘上的分区表全部损坏，我们还能用备份在软盘上的分区表进行修复。

1.备份硬盘主引导记录

通过KV3000备份的时候，事先要确认计算机中没有病毒，接着用KV3000软盘引导计算机并输入“KV3000/B”命令，此时程序将向A盘备份一个无病毒的硬盘主引导信息文件，备份的文件有2个，其文件名称分别是HDPT.DAT和HFBOOT.DAT。

但是需要提醒大家注意的是，备份得到的硬盘主引导信息只适用于这款硬盘以及当前的分区模式，如果用于不同容量或者相同容量但是分区模式不同的硬盘，将会对硬盘的分区表造成破坏，因此建议备份之后，在软盘的标签上写明机器型号、硬盘容量、分区大小等信息后保存。

2.恢复硬盘主引导记录

当硬盘主引导信息被病毒破坏或主引导记录损坏，硬盘不能启动时，就可以使用干净的系统盘启动。在KV3000的A盘下输入“KV3000/HDPT.DAT”，这样就能将备份在软盘上的原主引导信息内容恢复到硬盘中，不过恢复用的备份文件必须是从该硬盘上备份的，这样可以解决大部分主引导信息损坏、系统不能启动的问题。同样需要提醒大家注意的是，恢复硬盘主引导记录的时候不要将它用于其他硬盘，而且在硬盘重新分区时也不能进行恢复操作。

用Disk Genius备份恢复分区表

Disk Genius不仅提供了诸如建立、激活、删除、隐藏分区之类的基本硬盘分区管理功能，还具有分区表备份和恢复、分区参数修改、硬盘主引导记录修复、重建分区表等强大的分区维护功能。此外，它还具有分区格式化、分区无损调整、硬盘表面扫描、扇区拷贝、彻底清除扇区数据等实用功能。

提示：如果只是想利用Disk Genius查看、备份硬盘分区信息，可以直接在Windows下运行它，但如果涉及更改分区参数的写盘操作，则必须在纯DOS环境下运行，而且在使用前应将CMOS中的“Anti Virus”选项设为“Disable”。

运行Disk Genius后，程序将自动读取硬盘的分区信息，并在屏幕上以图表的形式显示硬盘分区情况。如图所示，这是Disk Genius检测笔者硬盘得到的分区信息结构图。其中左侧的柱状图显示硬盘上各分区的位置及大小，屏幕右侧用表格的形式显示了各分区的类型及其具体参数，包括分区的引导标志、系统标志、分区起始和终止柱面号、扇区号、磁头号。在柱状图与参数表格之间，有一个动态连线指示了它们之间的对应关系。可以通过鼠标在柱状图或表格中点击来选择一个分区，也可以用键盘上的光标移动键来选择当前分区。

需要备份分区表的时候，按下“F9”按键或者运行“工具→备份分区表”命令，并且在弹出的对话框中输入文件名即可备份当前分区表。按下“F10”按键或者运行“工具→恢复分区表”命令，然后输入文件名，软件将读入指定的分区表备份文件并更新屏幕显示，确认无误后即可将备份的分区表恢复到硬盘。

保护好分区表

由于分区表故障属于软故障，因此我们在日常使用计算机的时候需要养成正确的使用习惯，这样才能防患于未然，尽可能减少分区表出故障的可能性。

1.计算机中一定要安装杀毒软件，这不仅可以防止各种常见的病毒入侵计算机，更能够减少使用软盘或者光盘时，分区表误中病毒的可能性。而且在一般情况下，尽量不要使用来源不明的软盘与光盘。

2.新购置的硬盘建议在安装Windows 2000/XP的时候采用内置程序进行分区，或者借助Fdisk程序进行分区，尽量不要用第三方快速分区格式化一体的程序，这有可能导致日后使用计算机过程中出现故障。

3.对分区进行划分或者调整操作的时候，尽量选择电源比较稳定的时间段，有可能的情况下最好能够使用外接UPS电源。

4.在计算机稳定运行的情况下，尽可能不要对分区表进行调整和转换操作，尤其是NTFS分区，在进行上述操作之前一定要备份分区中的重要数据文件。

5.安装好操作系统之后，建议对分区表进行备份，以防出现故障时能够及时恢复。

看完上述介绍的内容之后，相信大家遇到分区表故障的时候也不会一筹莫展了吧，希望分区表故障不再困扰我们正常使用自己的计算机。

小知识

当通过Fdisk或其他分区工具对硬盘进行分区时，分区软件会在硬盘0柱面0磁头1扇区建立一个64字节的分区表，包括硬盘主引导记录MBR（Main Boot Record）和分区表DPT（Disk Partition Table）。其中主引导记录MBR的作用就是检查分区表是否正确以及确定哪个分区为引导分区，并在程序结束时把该分区的启动程序调入内存加以执行；而分区表DPT则以80H或00H为开始标志，以55AAH为结束标志，位于主引导扇区的最末端。整个分区表决定了硬盘中的分区数量，每个分区的起始及终止扇区、大小以及是否为活动分区等。

来源于网络 

马上就要回家了,说不上是激动还是什么,同学都到家了。。。还真有点怕见他们。。。。

 

上课、考试、放假、又是上课。。。学校的安排真是太槽糕了！！！

 

课程的临时变动搅了我去香港的计划，555555，为什么星期六要上课啊，何必呢

 

原以为8号回家只会逃一节课，这下好了，要逃四节课，郁闷啊

 

也不知道CCNA第三周考不考试，都走的快没有人了居然还要考试；OS的课也太恐怖，第一节课就考试，除了第一个题会答，其余3个程序题就不会了（第一题选什么都是对的）。

 

人机交互更BT，一周一篇英文报告，还有额外的作业。最后全班本科生和老师协商达成共事，两周一篇。。。。

 

原以为这学期不会比上学期忙，现在看来不可能了，有一堆的Project和实验，测验。。。苦啊，这学期一定要加油！！！！

争取GPA到3。0！！！

乌龟，頑張れ~~~~

今天起的很早,准确的说是没有睡觉吧,貌似这学期有好几次没有睡觉,要么做作业,要么看动画,还有夜不归宿吧....

 

不过今天是因为赶作业,我们这些孩子...哎~~~~怎么总在交作业的前一个晚上着急做作业呢?!平时干什么了?哎~~~不是说,真的是不会做,貌似这个PROJECT我们班就出了一个版本出来,同学都变懒了,心理素质都练出来了,不担心没有人不做作业的,车到山前必有路...等版本吧

 

不过说来,这学期真的很少写程序了,对那些字符都有点陌生了,哎~~~~还是懒!!!!!觉得呢,程序这些东西要从实践中出发....

 

..............................

 

新年第二天,就这么平淡的到了2007年,时间真的好快,仔细算算,在学校学习的时间已经不到一年时间了,大四下学期除了一个18的论文再没有其他科目了,大学就这样的要结束了......感觉这几年学到了什么?玩!!!这是最大的收获.....

 

刚看了某人的BLOG,从一月写到了十二月,很详细,也很简洁.过去的事情都过去了,脑子里要装的东西还很多,可以记忆的就让它记忆吧,不要刻意就行......不过这些也许只是借口吧.

 

不过前天突然想到了2004年过年的事情,那一年真的好倒霉,哎~~~好象出了两次车祸吧,好象都是我引起的,哎~~~~不爽的04年,我也就来这个人生地不熟的MACAO......

 

兄弟2006最后一天来了短信,惊奇!!!

班上一个女生2007第一天过了27分钟,来了一个短信,惊讶!!!

宿舍的非说我插兄弟的"刀",貌似我们最近都开始玩插刀了,不过我是无辜的.....

 

舍友还在睡觉,眼睛困了,不过昨天睡了N长时间,呼呼......现在是半个瞎子了,带眼镜都看不到东西了......

 

眼保健操现在开始........

时间好快,最后一天了,感觉在MUST读书的时间也就一年时间了,快毕业了~~~~~

 

看到了毕业的学姐,学长~~~~

 

联系了高中的同学,悲从中来~~~~

 

眼睛在闪~~~

和平时一样,但貌似少了点什么....

(占位编辑)

快两个月没有来这里了,自从上次电脑坏了后,密码什么的都忘记了......

 

今天平安夜了,外面应该很热闹吧......

 

学校没有人气了.......

 

发生了好多的事情的......

 

值得回忆的......

 

淡忘了的......

 

大家都准备考研了......

 

想想,已经很少去初中的班级群了......

 

我们那个快乐的实验班;

 

快乐的奥数班;

 

快乐的五班;

 

同学都没有联系了......

 

是自己太自卑吧......

 

或者其他的原因......

 

昨天得知"姐姐"明年五月结婚了......

 

感觉突然变了......

 

不知道队长是怎么想的......

 

我也希望看到他的愿望实现......

 

队长,加油~~~

 

虽然有点想家,但还是有点不愿意回去......

 

不知道为什么这么不恋家......

 

也许,回去和这里最大的区别就在网速吧......

 

三年了,不会再像当初一样了吧......

 

我们是否还能聚在一起?喝着酒,诉说着自己的生活......

 

三年的时间,改变了我们很多......

 

每个人都有自己的圈子......

 

习惯了一个人的生活......

 

改变了什么?什么在改变?

又是一个平安夜,一切都好,快乐吗?

第一次因为玩游戏换了所有的装备。。。。

鼠标：Razer Krait

备用鼠标： Logitech 

 

键盘： Logitech 黑珍珠键盘

备用键盘 Logitech 

 

Razer的这款狼蛛键盘是梦寐得到的。。。。

 

 

鼠标垫： Rantopad 猛犸2 是一块硬垫，但由于鼠标还没有贴脚，先收藏起来。。

备用  FIRE-PAD 这块地狱火的布垫感觉还不错。。。做工还行。。。

 

 

 

耳麦： 很普通的一个，估计随后会换掉。。。。

Icemat 的梦寐得到一个，但在这边还没有看到有卖的，等队长回家看看广州有没有。

 

 

上周星期四差点一时激动（偶在心情不好的时候，如果身边有钱就会有烧钱的行为），买下一套Razer的鼠标和鼠标垫。。。

鼠标：Razer Pro v1.6 纯白色

鼠标垫：Razer Pro 纯白色

搭配在一起绝对的漂亮了，不过要500RMB的高价，毕竟Razer Krait买了还不到两周时间，有换新鼠标有点太奢侈了，

拿着这个纯白色的垫子，试了又试，最后终于。。。。

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