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CNET 157 Final Exam Practice Questions and Answers
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CNET 157 Final Exam Practice Questions and Answers Almost immediately after a server migration project, employees are complaining that they can't reach the Internet. You sit down at a machine and try to ping a well-known website, which fails. You then try to ping a known public IP address, whic...

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  • November 10, 2024
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  • 2024/2025
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CNET 157 Final Exam Practice Questions

and Answers


Almost immediately after a server migration project, employees are complaining that they can't reach

the Internet. You sit down at a machine and try to ping a well-known website, which fails. You then try to

ping a known public IP address, which succeeds. What is most likely the problem? - ANSWER✔✔-DNS

settings are incorrect.


What does the ping message "Destination host unreachable" message mean? - ANSWER✔✔-An ARP

reply was not received.


What does the ping message "Destination net unreachable" mean? - ANSWER✔✔-A router in the path

from the source to the destination determined that the destination network does not exist.


What kind of software would you use to view and troubleshoot protocol-specific problems such as TCP

retries caused by missed acknowledgements, or duplicate acknowledgements that cause network slow-

down? - ANSWER✔✔-protocol analyzer


Your current backup schedule involves differential backups of all data Monday through Saturday, with a

full backup on Sunday. Last Saturday, one of your storage drives failed prior to running the daily backup.

What must be done to recover the data on the failed drive? - ANSWER✔✔-The last full backup should be

restored first, followed by the last successful differential backup prior to the drive failure.


Protocol analyzers can help solve problems from the Data Link layer up to the Application layer. T/F -

ANSWER✔✔-True


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You have just connected a brand new workstation to your local network. As per company policy, you

have used a static IP configuration. However, all attempts to reach the Internet from the workstation fail.

You have verified that you can communicate with servers and other workstations on the local network,

and that you are the only one having an issue reaching the Internet. What is most likely the issue? -

ANSWER✔✔-incorrectly configured gateway address


Which of the following consists of the policies, procedures, and resources required to ensure that a

business can continue to function after a major catastrophe that renders the site unable to operate? -

ANSWER✔✔-Business continuity


A junior network administrator tells you that he can ping a DNS server successfully using its IP address,

but he has not tested domain name lookups. What utility on the command line would you suggest your

colleague use next? - ANSWER✔✔-nslookup


You recently completed a network overhaul over the weekend. Everything seems to be functioning

properly until you receive a swarm of help desk support requests, all originating from one specific floor

in your building. After a few minutes on the phone with those affected, you determine that no one has

indicator lights active on their NICs. What is the most likely problem? - ANSWER✔✔-A network switch is

powered off.


You are currently troubleshooting a network issue with your ISP's customer support agent. The agent

requests that you open a command prompt and type "ping 127.0.0.1". What does this accomplish? -

ANSWER✔✔-tests that the local IP protocol is functioning


Select the Windows backup type that copies the boot files, the Registry, Active Directory on domain

controllers, and other critical information. - ANSWER✔✔-System State


Failing to document your network can increase your job security. T/F - ANSWER✔✔-False

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Which statement is true regarding differential / incremental backups? - ANSWER✔✔-Incremental

backups copy all files changed since the last full or incremental backup and marks files as backed up.


When using tape backup, what should be done to ensure that the backups are viable? - ANSWER✔✔-

Verify data can be restored.


The trial-and-error method should NOT be used under which of the following situations? - ANSWER✔✔-

The problem is being discussed over the phone and you're instructing an untrained user.


In the problem-solving process, you should always devise a solution to the problem you are facing prior

to determining the scope of the problem. T/F - ANSWER✔✔-False


You receive a phone call from a co-worker telling you that "the network is down." Just as you are about

to look into the issue, you receive several more phone calls from other co-workers. Using the problem-

solving process, what must be done first to effectively troubleshoot the issue? - ANSWER✔✔-Define the

problem and scope


Which of the following is NOT a good practice for performing upgrades? - ANSWER✔✔-ignore updates to

new releases


Traceroute would be best suited for which of the following tasks? - ANSWER✔✔-locating bottlenecks in a

network


Which command will display the configured IP address, default gateway, and DNS servers for a Windows

workstation? - ANSWER✔✔-ipconfig /all


Which statistic is most likely to be included in a network baseline report? - ANSWER✔✔-hard drive

utilization


The ping command is used to determine the path between two devices. T/F - ANSWER✔✔-false

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