Network Troubleshooting Flashcards
When should you use a cable tester to troubleshoot a network cable?
When you have a host experiencing a very slow connection
When you have an intermittent connection problem
When you have a dead connection and you suspect a broken cable
When you have a dead connection and you suspect a broken cable
Cable testers can only show that you have a broken or poorly wired cable, not if the cable is up to proper specification
What are tone probes and tone generators used for?
Locating a particular cable
Testing the dial tone on a PBX system
A long-duration ping test
Locating a particular cable
Tone probes are only used for locating individual cables
What does nslookup do?
Retrieves the name space for the network
Queries DNS for the IP address of the supplied host name
Performs a reverse IP lookup
Queries DNS for the IP address of the supplied host name
The nslookup command queries DNS and returns the IP address of the supplied host name
What is Wireshark?
Protocol analyzer
Packet sniffer
Packet analyzer
All of the above
All of the above
All of the above; Wireshark can sniff and analyze all the network traffic that enters the computer’s NIC
What will the command route print return on a Windows system?
The gateway’s router table
The routes taken by a concurrent connection
The current system’s route table
The current system’s route table
The route print command returns the local system’s routing table
When trying to establish symptoms over the phone, what kind of questions should you ask of a novice or confused user?
You should ask open-ended questions and let the user explain the problem in his or her own words.
You should ask detailed, close-ended questions to try and narrow down the possible causes.
Leading questions are your best choice for pointing the user in the right direction.
You should ask open-ended questions and let the user explain the problem in his or her own words.
With novice or confused users, ask open-ended questions so the user can explain the problem in his or her own words
While you are asking the user problem-isolating questions, what else should you be doing?
Asking yourself if there is anything on your side of the network that could be causing the problem.
Nothing; just keep asking the user questions.
Using an accusatory tone with the user.
Asking yourself if there is anything on your side of the network that could be causing the problem.
Ask yourself if anything could have happened on your side of the network
Which command shows you detailed IP information, including DNS server addresses and MAC addresses?
ipconfig
ipconfig -a
ipconfig /all
ipconfig /all
ipconfig /all displays detailed IP configuration information
What is the last step in the troubleshooting process?
Implementing the solution
Testing the solution
Documenting the solution
Documenting the solution
Documenting the solution is the last and, in many ways, the most important step in the troubleshooting process
One of your users calls you with a complaint that he can’t reach the site www.google.com. You try and access the site and discover you can’t connect either but you can ping the site with its IP address. What is the most probable culprit?
Google is down.
The gateway is down.
The DNS server is down.
The DNS server is down.
In this case, the DNS system is probably at fault. By pinging the site with its IP address, you have established that the site is up and your LAN and gateway are functioning properly
