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Free Practice Quiz Question List

3 Network Connectivity Diagnosis Online Quiz Questions

Use this free practice quiz with 20 questions to review 3 Network Connectivity Diagnosis, test your knowledge, and prepare for your next test or exam.

20 questions
01
True or false
1 point

A device's network link light is on. Does this alone confirm that its IP configuration and routed connection are working?

  1. A

    True

  2. B

    False

02
Choose one
1 point

You have confirmed that a device's network adapter is enabled and its link is up. What is the most appropriate next step in the staged diagnosis?

  1. A

    Start by testing a remote application port.

  2. B

    Verify the IP address, subnet or prefix, and default gateway.

  3. C

    Assume routed connectivity works because the link is up.

  4. D

    Trace the route to a remote destination before checking the device's IP settings.

03
Written response
1 point

For the example device configured as 192.168.10.25/24, what is the highest address in the stated local range? Enter the last IPv4 address in dotted-decimal notation.

04
Fill in the blank
1 point

To inspect Linux IP configuration, use to view interface addresses and to view routes.

05
Choose all
1 point

A remote IP address replies to ping. Select all conclusions supported by that result.

  1. A

    The ICMP echo traffic received a reply.

  2. B

    Every application on the destination is reachable.

  3. C

    A specific service may still need to be tested through its relevant application or port.

  4. D

    The destination's entire network path is guaranteed to be fault-free.

06
Written response
1 point

Which command name is used to trace a routed path on Linux? Enter the command name only.

07
Choose one
1 point

A device can ping its gateway, but a known remote IP address does not respond. Which is the most appropriate next investigation?

  1. A

    Replace the local device's network adapter because the gateway replied.

  2. B

    Investigate routes and intermediate network devices, using a trace to compare with the expected path.

  3. C

    Conclude that the remote host is blocking ping and stop troubleshooting.

  4. D

    Change the device's DNS servers before testing any other cause.

08
True or false
1 point

If one hop in a route trace does not answer, that alone proves the path is broken at that hop.

  1. A

    True

  2. B

    False

09
Fill in the blank
1 point

In the staged IPv4 ping sequence, test first, then the device's configured address, and then before testing a remote IP.

10
Choose all
1 point

Local tests to the device succeed, but it cannot reach its gateway. Select all appropriate checks to perform next.

  1. A

    Check the local subnet and VLAN.

  2. B

    Investigate the remote destination's application port first.

  3. C

    Check the switch path and gateway availability.

  4. D

    Change DNS settings because the gateway cannot be reached.

11
Choose one
1 point

A device fails to ping both 127.0.0.1 and its own configured IP address. What should you investigate first?

  1. A

    Investigate DNS name resolution only.

  2. B

    Investigate routes beyond the gateway.

  3. C

    Investigate the device's network stack or interface configuration.

  4. D

    Conclude that a remote firewall is blocking the connection.

12
Choose one
1 point

How does tracert discover successive hops toward a destination?

  1. A

    It sends probes with a fixed TTL and identifies hops from DNS replies.

  2. B

    It sends probes with increasing TTL values to discover successive hops.

  3. C

    It sends an application request to every router along the path.

  4. D

    It tests only whether the destination's DNS name resolves.

13
Choose one
1 point

A device cannot ping a destination, but the application the user needs works. What is the best interpretation?

  1. A

    Conclude that the network is down and stop testing.

  2. B

    Replace the destination because it did not answer ICMP.

  3. C

    Recognize that ICMP may be filtered; the working application shows its service is reachable.

  4. D

    Treat the successful application as proof that the ping result is incorrect.

14
Open ended
1 point

A user reports that an application on a remote system is unavailable. The local interface is enabled and link is up; IP settings appear valid; the device and gateway both respond to ping, but the remote IP does not. Describe the next troubleshooting steps and explain what a route trace or ping result can and cannot establish.

15
Choose one
1 point

A device cannot reach any network destination, and its interface reports that the link is down. What should you check first?

  1. A

    Check DNS servers and the application’s port.

  2. B

    Check the adapter state, cable, switch port, and physical link.

  3. C

    Run a route trace to the remote destination.

  4. D

    Change the remote destination’s IP address.

16
Choose one
1 point

A device is configured as 192.168.10.25/24. Which listed gateway address is on the same local subnet and is a plausible gateway address?

  1. A

    192.168.11.1

  2. B

    192.168.10.0

  3. C

    192.168.10.1

  4. D

    192.168.10.255

17
Choose one
1 point

A device can ping its gateway, but a known remote IP does not respond. What should you investigate next?

  1. A

    Investigate name resolution and the application’s port first.

  2. B

    Investigate routes and intermediate network devices, and compare the route trace with the expected path.

  3. C

    Replace the device’s network adapter because its local link must be down.

  4. D

    Conclude that ICMP is filtered, even though the question concerns reachability to a remote IP.

18
True or false
1 point

True or false: tracert discovers hops by sending probes with increasing time-to-live (TTL) values.

  1. A

    True

  2. B

    False

19
Written response
1 point

On Windows, which command can you use to trace the routed path toward a destination? Enter the command name.

20
Written response
1 point

On Linux, which command shown in the material displays route information? Enter the command, including its subcommand.