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Monday, April 28, 2014

Answers to Review Questions - Network + Chapter 4


Answers to Review Questions

1. C. Although all utilities can be used to test the functionality of an IP host in one way or another, the ping utility is used specifically to test whether an IP host is up and responding.

2. A. The ARP utility is used to display the contents of the ARP cache, which tracks the resolution of IP addresses to physical (MAC) addresses and will produce the displayed output.

3. A. The nbt in nbtstat stands for “NetBIOS over TCP/IP.” The purpose of nbtstat is to display
the NetBIOS over TCP/IP statistics for a computer running both protocols.

4. B. The purpose of the ping utility is to test the communications channel between two IP hosts
as well as how long it takes the packets to get from one host to another.

5. B. The winipcfg utility is for Windows 95/98. It displays information like the MAC and TCP/
IP address of your workstation as well as other TCP/IP configuration information for your
workstation.

6. B, D. The address 127.0.0.1 is the special IP address designated for the local TCP/IP interface.
The host name localhost is the host name given to the local interface. Therefore, pinging either
the IP address or the host name for the local interface will tell you whether or not the local interface
is working.

7. A. The command nbtstat –r displays all the name resolutions performed by the local client as
well as their associated IP addresses. The –R switch will reload the cache.

8. D. The only utility listed that can be used to download files from a UNIX server is the ftp utility.

9. B. To purge and reload the remote NetBIOS name cache, you must use nbtstat –R. Remember that the R must be uppercase and it will not work correctly without the hyphen before it.

10. B. The ipconfig utility is similar to the Windows 95/98 utility winipcfg in that it displays the current TCP/IP configuration of a station. However, ipconfig is a Windows NT based–only
utility, with a limited version available for 98.

11. B. The tracert utility traces the route from the source IP host to the destination host.

12. C. The tracert utility will tell you which router is having the performance problem and how long it takes to move between each host. Tracert can be used to locate problem areas in a network.

13. A. The ipconfig /all switch will display the most complete listing of TCP/IP configuration information for a Windows NT computer.

14. C. The tracert utility returns all router names and addresses through which a packet passes on its way to a destination host.

15. E. The Telnet utility can be used to test if a particular IP host is responding on a particular TCP port.

16. C. The arp –a command will display the current contents of the ARP cache on the local workstation. 202 Chapter 4 TCP/IP Utilities

17. B. The get command, followed by the name of the file you want to download, will initiate the download of that particular file.

18. A, D. The arp utility’s –a and –g switches perform the same function. They both show the current ARP cache.

19. C. The –s switch will enable you to view the statistics about how many of a particular TCP/IP protocol’s packets have been sent and received.


20. C. nbtstat –s will list all NetBIOS sessions, incoming and outgoing, from that PC.

Review Questions - Network + Chapter 4


Review Questions

1. Which TCP/IP utility is most often used to test whether an IP host is up and functional?
A. ftpB. TelnetC. pingD. netstat
2. Which TCP/IP utility will produce the following result?
Interface: 199.102.30.152 Internet Address Physical Address Type
199.102.30.152 A0–ee–00–5b–0e–ac dynamic
A. arpB. netstatC. tracertD. nbtstat
3. Which Windows utility can you use to display NetBIOS over TCP/IP statistics?
A. nbtstatB. netstatC. arpD. ipconfig
4. Which TCP/IP utility might produce the following output?
Pinging 204.153.163.2 with 32 bytes of data:
Reply from 204.153.163.2: bytes=32 time=1ms TTL=128
Reply from 204.153.163.2: bytes=32 time=1ms TTL=128
Reply from 204.153.163.2: bytes=32 time=1ms TTL=128
Reply from 204.153.163.2: bytes=32 time<10ms TTL=128

of your Windows 95/98 workstation?
A. tracertB. pingC. WINSD. winipcfg
5. Which utility can you use to find the MAC and TCP/IP address of your Windows 95/98 workstation?
A. pingB. winipcfgC. ipconfigD. tracertE. Telnet
6. Which ping commands will verify that your local TCP/IP interface is working? (Choose all that apply.)
A. ping 204.153.163.2B. ping 127.0.0.1C. ping localifD. ping localhostE. ping iphost
7. Which switch for the Windows nbtstat utility will display all NetBIOS name resolution statistics?
A. –rB. /rC. –RD. /R
8. Which program can you use to download files from a UNIX server?
A. nbtstatB. netstatC. arpD. ftp
9. Which nbtstat utility switch will purge and reload the remote NetBIOS name table cache?
A. –rB. –RC. /rD. /R
10. Which Windows 2000 utility will display the current TCP/IP configuration of the host it is executed on?
A. arpB. ipconfigC. winipcfgD. winipconfig
11. Which utility produces an output similar to the following?
1 110 ms 96 ms 107 ms fgo1.corpcomm.net [209.74.93.10]
2 96 ms 126 ms 95 ms someone.corpcomm.net [209.74.93.1]
3 113 ms 119 ms 112 ms Serial5–1–1.GW2.MSP1.alter.net [157.130.100.185]
4 133 ms 123 ms 126 ms 152.ATM3–0.XR2.CHI6.ALTER.NET [146.188.209.126]
5 176 ms 133 ms 129 ms 290.ATM2–0.TR2.CHI4.ALTER.NET [146.188.209.10]
6 196 ms 184 ms 218 ms 106.ATM7–0.TR2.SCL1.ALTER.NET [146.188.136.162]
7 182 ms 187 ms 187 ms 298.ATM7–0.XR2.SJC1.ALTER.NET [146.188.146.61]
204 ms 176 ms 186 ms 192.ATM3–0–0.SAN–JOSE9– GW.ALTER.NET
[146.188.144.133]
9 202 ms 198 ms 212 ms atm3–0–622M.cr1.sjc.globalcenter.net [206.57.16.17]
10 209 ms 202 ms 195 ms pos3–1–155M.br4.SJC.globalcenter.net
[206.132.150.98]
11 190 ms * 191 ms pos0–0–0–155M.hr3.SNV.globalcenter.net [206.251.5.93]
12 195 ms 188 ms 188 ms pos4–1–0– 155M.hr2.SNV.globalcenter.net
[206.132.150.206]
13 198 ms 202 ms 197 ms www10.yahoo.com [204.71.200.75]
A. arpB. tracertC. nbtstatD. netstat
12. You are the network administrator. A user calls you complaining that the performance of the intranet web server is sluggish. When you try to ping the server, it takes several seconds for the server to respond. You suspect that the problem is related to a router that is seriously overloaded. Which workstation utility could you use to find out which router is causing this problem?
A. netstatB. nbtstatC. tracertD. pingE. arp
13. Which ipconfig switch will display the most complete listing of IP configuration information for a station?
A. /allB. /renewC. /releaseD. /?
14. Which utility will display a list of all the routers that a packet passes through on the way to an IP destination?
A. netstatB. nbtstatC. tracertD. pingE. arp
 15. Which Windows TCP/IP utility could you use to find out if a server is responding on TCP port 21?
A. tcpB. portC. pingD. netstatE. Telnet
16. Which arp command can you use to display the currently cached ARP entries?
A. arpB. arp –AC. arp –aD. arp /AE. arp /a
17. Which ftp command-line command will initiate the download of a file?
A. arpB. getC. putD. lcd
18. Which two arp utility switches perform the same function? (Choose all that apply.)
A. –gB. –AC. –dD. –a
19. Which netstat switch will enable you to view the number of ICMP packets your workstation has sent and received?
A. –aB. –rC. –sD. –I
20. Which nbtstat switch displays a list of all the NetBIOS sessions currently active on the local workstation?
A. –aB. –rC. –sD. –I