Troubleshooting Tools Flashcards
Which TCP/IP utility is most often used to test whether an IP host is up and functional?
ftp
telnet
ping
ping
The program Packet Internet Groper (ping) is used to find out if a host has the IP stack initialized
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
arp
netstat
tracert
arp
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
Which Windows utility can you use to connect to a machine 50 miles away to troubleshoot?
Remote Desktop
netstat
arp
Remote Desktop
Microsoft has made what it calls Remote Desktop software available for free with Windows products since Windows NT. When this software is installed (installed by default in later versions) on both source and destination computers, a remote desktop connection can be made
Which TCP/IP utility might produce the following output?
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
tracert
ping
WINS
ping
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
Which utility can you use to find the MAC and TCP/IP addresses of your Windows workstation?
ping
ipconfig
ipconfig /all
ipconfig /all
The ipconfig /all utility will display the current configuration of TCP/IP on a given workstation—including the current IP address, DNS configuration, WINS configuration, and default gateway
Which ping commands will verify that your local TCP/IP interface is working? (Choose all that apply.)
ping 204.153.163.2
ping 127.0.0.1
ping localif
ping localhost
ping 127.0.0.1
ping localhost
The address 127.0.0.1 is the special IP address designated for the local TCP/IP interface. The hostname localhost is the hostname given to the local interface. Therefore, pinging either the IP address or the hostname for the local interface will tell you whether the local interface is working
Which switch for the Windows nbtstat utility will display all NetBIOS name-resolution statistics?
–r
/r
–R
–r
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
You need to find a NIC’s specific MAC address and IP address. Which command-line tool can you use to find this information without physically going to the computer?
ping
nbtstat
arp
arp
The arp utility will show you the resolved MAC to IP address of all hosts on your network segment. Remember, this will work for only local hosts, not remote hosts
Which nbtstat utility switch will purge and reload the remote NetBIOS name table cache?
–r
–R
/r
–R
To purge and reload the remote NetBIOS name cache, you must use nbtstat –R. Remember that the R must be uppercase and that it will not work correctly without the hyphen before it
Wireshark is an example of a __________?
Throughput tester
Protocol analyzer
Remote connection tool
Protocol analyzer
Commercial sniffers like Wireshark and Omnipeek can capture any packets because they set the NIC to operate in promiscuous mode, which means the NIC processes all packets that it sees
Which utility produces 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]
8 204 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]
arp
tracert
nbtstat
tracert
The tracert utility will give you that output. The tracert command (or trace for short) traces the route from the source IP host to the destination host
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?
netstat
nbtstat
tracert
tracert
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
Which ipconfig switch will display the most complete listing of IP configuration information for a station?
/all
/renew
/release
/all
The ipconfig /all switch will display the most complete listing of TCP/IP configuration information, also displaying the MAC address, DHCP lease times, and the DNS addresses
Which utility will display a list of all the routers that a packet passes through on the way to an IP destination?
netstat
nbtstat
tracert
tracert
The tracert utility returns the names and addresses of all routers through which a packet passes on its way to a destination host
Which Windows TCP/IP utility could you use to find out whether a server is responding on TCP port 21?
ping
nbtstat
telnet
telnet
The telnet utility can be used to test if a particular IP host is responding on a particular TCP port
