01
Choose one
1 point
A Windows computer has an IPv4 address beginning with 169.254. What does this most commonly suggest?
Free Practice Quiz Question List
8 Network Testing and Troubleshooting Online Quiz Questions
Use this free practice quiz with 20 questions to review 8 Network Testing and Troubleshooting, test your knowledge, and prepare for your next test or exam.
20 questions
02
True or false
1 point
A traceroute shows an asterisk for one hop. This alone proves that the router at that hop is failing to forward traffic.
- A
True
- B
False
03
Choose one
1 point
A user can reach a server by IP address but not by hostname. Which troubleshooting step best targets the likely cause?
- A
Replace the remote router immediately.
- B
Run a cable continuity test on the client.
- C
Check DNS servers, suffixes, and records.
- D
Change the destination's IP address.
04
Choose all
1 point
Select all statements that correctly describe copper-cable testing.
- A
A wiremap or verification tester can identify opens and shorts.
- B
A basic continuity test alone certifies compliance with a cabling standard.
- C
A qualification tester checks whether a link is suitable for a target technology or bandwidth.
- D
A qualification tester measures performance against the applicable cabling certification limit.
05
Choose one
1 point
A host responds to ping, but a TCP-based application on that host is unavailable. What is the best next diagnostic approach?
- A
Ping uses TCP, so success confirms the application's TCP port is open.
- B
Ping uses ICMP, so test the actual service port when the application fails.
- C
Ping tests DNS records, so success confirms hostname resolution.
- D
Ping tests only the physical cable, so success confirms the full network path.
06
True or false
1 point
When troubleshooting routing, confirming a route toward the destination is sufficient even if the return path is unknown.
- A
True
- B
False
07
Choose all
1 point
Two devices should communicate on a LAN, but the link is up and they cannot reach each other. Select all switch checks that could reveal a VLAN-related cause.
- A
Verify that the access port is assigned to the expected VLAN.
- B
Change the client's DNS suffix.
- C
Check whether the trunk carries the required VLAN.
- D
Assume that a link-up indication rules out switch configuration problems.
08
True or false
1 point
On Windows, can netsh wlan show networks mode=bssid reveal visible access points, signal strength, and channel information?
- A
True
- B
False
09
Written response
1 point
What IPv4 prefix commonly begins a Windows address when the computer did not obtain an IPv4 address from DHCP?
10
Written response
1 point
Which Windows command combines route tracing with repeated probes to estimate loss at hops and links?
11
Fill in the blank
1 point
To measure cabling performance against an applicable standard and limit, use a .
12
Fill in the blank
1 point
Traceroute reveals responding hops by sending probes with increasing values.
13
Open ended
1 point
A host can reach its local gateway but cannot reach a remote network. Describe a systematic way to investigate the routing problem, including how to use traceroute evidence.
14
Choose one
1 point
A network problem affects several users, but its cause is unknown. Which initial approach best follows a systematic troubleshooting method?
- A
Identify the symptoms and scope, then test from the nearest layer outward.
- B
Replace network devices until the service returns.
- C
Begin by changing several configurations at once.
- D
Assume that one failed diagnostic test proves the fault location.
15
Written response
1 point
A Windows computer has an IPv4 address beginning with 169.254 instead of an address for its intended network. Which service should you investigate as a likely cause?
16
Choose one
1 point
A computer can reach a destination by its IP address but cannot reach it by hostname. Which test most directly helps determine whether name resolution is the problem?
- A
Use traceroute to identify every router on the path.
- B
Use nslookup to test name resolution.
- C
Replace the network cable.
- D
Check the switch port's error counters.
17
Choose one
1 point
An installer needs to determine whether a copper link meets the performance limits of the applicable cabling standard. Which type of tester is designed for that task?
- A
A wiremap or verification tester
- B
A qualification tester
- C
A certification tester
- D
A time-domain diagnostic
18
Choose one
1 point
Several users report unreliable Wi-Fi. Before changing settings, what should you determine first to narrow the scope of the problem?
- A
Determine whether the issue affects one client, one access point, one location, or the whole wireless network.
- B
Replace the access point serving the affected client.
- C
Change the wireless channel on every access point.
- D
Assume the client has an authentication problem.
19
Written response
1 point
Which Windows command displays visible access points in a BSSID view, including their signal strength and channel?
20
Choose one
1 point
A device's switch link is up, but it cannot communicate with another device on the same LAN. The devices are connected to managed-switch access ports. Which switch setting should you check?
- A
Check whether the host has a DNS suffix configured.
- B
Check whether the switch port is assigned to the expected access VLAN.
- C
Replace the router's default route.
- D
Run a cable certification test on the host's power cord.