module 20 Troubleshoot common network problems Flashcards
Medhat is unable to connect to a site on the internet. To begin troubleshooting, he first tests network connectivity. If that fails, he will work his way down the layers to the physical medium. If network connectivity tests succeed, he will work his way up to troubleshooting the application software. Which structured troubleshooting method is Medhat using?
divide-and-conquer
Patti is troubleshooting an issue on the network. Based on her past experience with similar situations, she assumes the problem is a bad IP configuration and starts troubleshooting with that. Which structured troubleshooting method is Patti using?
educated guess
Allan contacts the ISP complaining of issues connecting to the internet. He is unsure of the problem. The ISP sends a new preconfigured modem to Allan in hopes that it solves the situation. Which structured troubleshooting method is the ISP using?
substitution
Which structured troubleshooting method should be used when a software orientated problem occurs?
Top-down
Which structured troubleshooting method should be used when a cabling problem is suspected?
bottom-up
Which structured troubleshooting method attempts to locate the issue in a device or link between the source and destination?
follow-the-path
Which structured troubleshooting method attempts to resolve the problem by changing elements in the problem device or configuration to be consistent with a working one?
comparison
What is NOT considered a physical layer problem?
wireless configuration
Which senses typically alert technicians that components are overheating? (Choose three.)
1-smell
2-taste
3-touch
True or false? A LED light that is not lit on a port means there is no traffic.
True
If your physical connection is working as expected, but there is still a problem, what would be the next step?
check IP configuration
What command can you use to ask the DHCP server to refresh your IP addressing configuration?
Ipconfig/renew
What is the most likely cause if you are able to ping multiple sites on the internet, but not able to open web pages?
firewall configuration
Which two of the following sources of help typically provide troubleshooting expertise? (Choose two.)
1-Internet searches
2-colleagues
True or false? After a problem is resolved, there is no further action you need to take.
false
The home computer of a user is working properly. However, the user cannot access the Internet. The Internet connection is provided through a cable company. The user cannot identify the cause of the problem. Who should the user contact for further help?
The help line of the cable company
A network technician enters the command ipconfig /release followed by ipconfig /renew in order to ensure that the DHCP IP configuration on a workstation is updated. However, the workstation does not receive a valid IP configuration for the network. Which two problems may exist on the network? (Choose two.)
1-there is a DHCP server issue
2-There is no network connectivity to the DHCP server
A customer called the cable company to report that the Internet connection is unstable. After trying several configuration changes, the technician decided to send the customer a new cable modem to try. What troubleshooting technique does this represent?
Substitution
A small office uses a wireless router to connect to a cable modem for internet access. The network administrator receives a call that one office computer cannot access external websites. The first troubleshooting step that the network administrator performs is to ping the wireless router from the office computer. Which troubleshooting technique does this represent?
divide-and-conquer
A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed?
tracroute
Which command would a technician use to display network connections on a host computer?
netstat
Which three items should be documented after troubleshooting an internal web server crash?
1- when the problem occured
2- Step that were performed that failed to identify the cause of the problem
3- steps that were performed to identify the cause of the problem
A user calls the help desk to report a workstation problem. Which three questions would produce the most helpful information for troubleshooting?
1- If you received an error message, what was it
2- what change have you made to your workstation
3- what operating system version is running on your workstation
Which step should be taken next once a problem is resolved during a troubleshooting process?
update the documentation
