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7 Integrated Network Troubleshooting Practice Online Quiz Questions

Use this free practice quiz with 20 questions to review 7 Integrated Network Troubleshooting Practice, test your knowledge, and prepare for your next test or exam.

20 questions
01
Choose one
1 point

Which incident description is most useful for beginning a focused investigation?

  1. A

    The network is down.

  2. B

    Wired clients on the second-floor access switch lose packets to the gateway, while wireless clients are unaffected.

  3. C

    The connection has been bad lately.

  4. D

    Users should restart their computers.

02
Choose one
1 point

A user can reach an approved application destination by IP address, but the application name does not resolve. What is the best next investigative focus?

  1. A

    Assume the application server is unavailable and restart it.

  2. B

    Reset all network settings on the affected clients.

  3. C

    Investigate name resolution by checking the lookup and DNS configuration.

  4. D

    Conclude that the network is fully operational because the IP works.

03
Choose one
1 point

A server responds to ping, but users cannot connect to an application that uses TCP port 443. Which test would provide the most relevant evidence about application reachability?

  1. A

    Test the protocol and port used by the service.

  2. B

    Rely on a successful ping as proof that the application is available.

  3. C

    Replace the user's cable without checking the access path.

  4. D

    Assume the application is available if the client has an IP address.

04
Choose all
1 point

Several users report intermittent slow application performance. Which actions can provide useful evidence about the cause? Select all that apply.

  1. A

    Capture latency and loss measurements while users reproduce the problem.

  2. B

    Run one test after the issue has stopped and treat it as conclusive.

  3. C

    Compare performance measurements with a known baseline.

  4. D

    Inspect relevant interface counters and application or server logs.

05
Choose all
1 point

When several users report a problem with an application, which comparisons can help narrow its scope? Select all that apply.

  1. A

    Compare an affected user with a known-good user.

  2. B

    Test the same application from another network segment when possible.

  3. C

    Assume all symptoms have one cause because they were reported at the same time.

  4. D

    Compare affected and working cases to identify differences in scope.

06
True or false
1 point

A failed ping does not, by itself, prove that the destination or network is unavailable.

  1. A

    True

  2. B

    False

07
True or false
1 point

A link light indicates that a physical link is up, but it does not establish that the connection is clean or reliable.

  1. A

    True

  2. B

    False

08
Written response
1 point

Name one command that can be used to query name resolution while investigating whether DNS is involved.

09
Written response
1 point

Which Linux command listed in the material can be used to inspect a device's routes?

10
Fill in the blank
1 point

To help narrow a fault, compare the affected case with a working .

11
Fill in the blank
1 point

When testing a hypothesis, make at a time so the result can be interpreted.

12
Open ended
1 point

Several wired users in one area report slow, intermittent access to a business application. One user also reports that the application fails by name. The affected switch port has increasing physical-layer errors during the problem. Describe a focused investigation and verification plan, including how you would handle the name-lookup symptom.

13
Choose one
1 point

A switch port's physical-error counter increases while users reproduce an intermittent problem. Which next action best tests a cabling hypothesis while preserving useful evidence?

  1. A

    Reset all switch ports and reconfigure the network.

  2. B

    Inspect the cable and connection, then test a known-good cable without changing unrelated settings.

  3. C

    Assume the application server is the cause because users report application delays.

  4. D

    Disable name resolution to see whether the physical errors stop.

14
Choose one
1 point

Several users report that “the network is down.” What should you do first to turn this report into a useful troubleshooting problem statement?

  1. A

    Restart every network device serving the area to see whether service returns.

  2. B

    Determine which users, devices, and services are affected, where and when the issue occurs, and whether it is a full failure or degraded performance.

  3. C

    Replace the access switch because several users have reported a problem.

  4. D

    Tell users the issue is resolved once one device can access the application.

15
True or false
1 point

A switch port’s link indicator is on. This alone proves that the connection is clean and reliable.

  1. A

    True

  2. B

    False

16
Written response
1 point

A Windows client may have incorrect addressing or DNS settings. Which command displays its detailed IP configuration?

17
Choose one
1 point

A client’s ping to its gateway fails. What is the most reliable interpretation and next step?

  1. A

    Conclude that the gateway is unavailable and replace it.

  2. B

    Disable the client firewall and repeat the test without recording its original state.

  3. C

    Treat the result as evidence, check the client’s network settings, and use other appropriate tests before concluding the gateway is down.

  4. D

    Assume the remote application is unavailable because the gateway did not answer.

18
Written response
1 point

Which Linux command displays the system’s routing table so you can check its routes and default gateway?

19
Choose one
1 point

Users can reach an approved destination by IP address, but access by its name fails. What should you investigate next?

  1. A

    Investigate DNS configuration, responses, and records as a distinct hypothesis.

  2. B

    Replace the client’s network cable because name lookup depends on a physical connection.

  3. C

    Conclude that the destination service is down because the name did not resolve.

  4. D

    Assume that successful IP access proves all DNS records are correct.

20
Choose one
1 point

A server answers ping, but users cannot connect to an application that uses TCP port 443. Which test would provide more relevant evidence about the application’s network service?

  1. A

    Repeat the ping until it succeeds several times.

  2. B

    Check whether the client has a link indicator.

  3. C

    Run a route trace and treat its result as proof that the application is available.

  4. D

    Test the service’s TCP port 443 with a port-specific tool.