module 20 Troubleshoot common network problems

Question 1

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?

Answer 1

divide-and-conquer

Question 2

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?

Answer 2

educated guess

Question 3

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?

Answer 3

substitution

Question 4

Which structured troubleshooting method should be used when a software orientated problem occurs?

Answer 4

Top-down

Question 5

Which structured troubleshooting method should be used when a cabling problem is suspected?

Answer 5

bottom-up

Question 6

Which structured troubleshooting method attempts to locate the issue in a device or link between the source and destination?

Answer 6

follow-the-path

Question 7

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?

Answer 7

comparison

Question 8

What is NOT considered a physical layer problem?

Answer 8

wireless configuration

Question 9

Which senses typically alert technicians that components are overheating? (Choose three.)

Answer 9

1-smell
2-taste
3-touch

Question 10

True or false? A LED light that is not lit on a port means there is no traffic.

Answer 10

True

Question 11

If your physical connection is working as expected, but there is still a problem, what would be the next step?

Answer 11

check IP configuration

Question 12

What command can you use to ask the DHCP server to refresh your IP addressing configuration?

Answer 12

Ipconfig/renew

Question 13

What is the most likely cause if you are able to ping multiple sites on the internet, but not able to open web pages?

Answer 13

firewall configuration

Question 14

Which two of the following sources of help typically provide troubleshooting expertise? (Choose two.)

Answer 14

1-Internet searches
2-colleagues

Question 15

True or false? After a problem is resolved, there is no further action you need to take.

Answer 15

false

Question 16

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?

Answer 16

The help line of the cable company

Question 17

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.)

Answer 17

1-there is a DHCP server issue
2-There is no network connectivity to the DHCP server

Question 18

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?

Answer 18

Substitution

Question 19

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?

Answer 19

divide-and-conquer

Question 20

A network administrator can successfully ping the server at ww​w.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?

Answer 20

tracroute

Question 21

Which command would a technician use to display network connections on a host computer?

Answer 21

netstat

Question 22

Which three items should be documented after troubleshooting an internal web server crash?

Answer 22

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

Question 23

A user calls the help desk to report a workstation problem. Which three questions would produce the most helpful information for troubleshooting?

Answer 23

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

Question 24

Which step should be taken next once a problem is resolved during a troubleshooting process?

Answer 24

update the documentation