Free Practice Quiz Question List

6 Network Performance Problems Online Quiz Questions

Use this free practice quiz with 20 questions to review 6 Network Performance Problems, test your knowledge, and prepare for your next test or exam.

20 questions

Choose one

1 point

Only one device on a network has slow or unstable connectivity, while other devices work normally. Which investigation is the best next step?

A
Check the affected device's adapter, driver, background traffic, and local configuration.
B
Assume the internet service is failing for every device.
C
Change the wireless channel before comparing any devices.

Fill in the blank

1 point

To check whether performance changes with network activity, measure while the network is both and busy.

True or false

1 point

If Wi-Fi performance improves near the access point, that result alone proves that interference caused the problem.

A
True
B
False

Written response

1 point

What network-performance metric describes the time taken for data to travel between endpoints?

Choose one

1 point

A device performs poorly over Wi-Fi but performs much better over Ethernet. Which direction should the investigation take first?

A
Investigate Wi-Fi or radio-frequency conditions.
B
Focus first on the shared remote service, because Ethernet and Wi-Fi use different services.
C
Conclude that the device's application is necessarily at fault.

True or false

1 point

A few missing ping replies, by themselves, prove that the affected application is losing packets.

A
True
B
False

Written response

1 point

If repeated tests leave the cause inconclusive, what should you collect during a reproducible slowdown to investigate the traffic in more detail?

Choose all

1 point

Which observations support investigating congestion as a cause of a slowdown? Select all that apply.

A
Throughput falls and latency rises mainly during busy periods.
B
The slowdown coincides with heavy downloads or backups.
C
Many clients are connected, but there is no evidence of activity or high utilization.
D
Interface or wireless-channel utilization is high during the slowdown.

Choose all

1 point

Several users near one access point report unstable Wi-Fi. Which access-point or client report details would help investigate the wireless conditions? Select all that apply.

A
Signal-to-noise ratio
B
Retries
C
Channel utilization
D
Roaming or disconnect events
E
The number of websites bookmarked on the device

Fill in the blank

1 point

Router tests are steady, but tests to a remote host are slow or lossy. Investigate the router , internet path, or remote destination.

Choose one

1 point

A connection has high bandwidth, but an interactive application still feels slow. Which explanation is consistent with the performance signals?

A
High latency or packet loss may still make the connection feel slow.
B
High bandwidth guarantees low latency and no packet loss.
C
The connection must have a weak Wi-Fi signal, even if it is wired.

Choose one

1 point

One application is slow, but other network services work normally. Which direction is the most appropriate to investigate?

A
Investigate the application server, its service path, or application-specific requirements.
B
Conclude that the entire local network is congested.
C
Replace the access point without checking whether other services are affected.

Written response

1 point

What term describes the capacity of a network connection, rather than the rate actually achieved?

Open ended

1 point

A user reports slow or unstable performance on one device, but the cause is not known. Describe a diagnostic sequence that can distinguish a device or Wi-Fi problem from a shared network-path or application problem, and explain how to verify whether a change helped.

Choose one

1 point

A device has poor performance over Wi-Fi but performs well over Ethernet on the same network. Which direction should you investigate first?

A
The remote service is definitely overloaded.
B
The problem likely involves Wi-Fi or radio-frequency conditions.
C
The device must have a faulty network adapter.
D
The internet service is definitely the cause.

Written response

1 point

What is the term for the time measured for data to travel to a destination and back?

Choose one

1 point

A remote host does not reply consistently to ping, but the affected application has not yet been tested. What is the soundest conclusion?

A
Ping tests every application protocol and proves whether the service is working.
B
Ping can measure bandwidth but cannot show delay.
C
Ping tests ICMP, so its results may not represent application performance.
D
Ping tests only wireless connections.

Choose one

1 point

An access point serves many clients, but it is unclear whether their activity is causing a slowdown. Which check would provide the most relevant evidence of congestion?

A
A large client count by itself proves the wireless channel is congested.
B
Check active traffic and wireless-channel utilization during the slowdown.
C
Replace the access point immediately, without taking measurements.
D
Assume the remote server is the cause whenever many clients are connected.

True or false

1 point

A few ping replies are missing. This alone proves that traffic for the affected application is being lost.

A
True
B
False

Choose one

1 point

Tests to the local router are steady, but tests to a reliable remote host are slow or lossy. Where should you focus the next investigation?

A
Investigate the router uplink, internet path, or remote destination.
B
Start by replacing the affected device’s wireless adapter.
C
Conclude that the local Wi-Fi link is the cause.
D
Assume the application itself is the only possible cause.

6 Network Performance Problems Online Quiz Questions

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