How should I use these Troubleshooting practice questions?

Read each scenario carefully and choose your answer before revealing the explanation. Then check why your choice was right or wrong. Repeat until the reasoning feels automatic.

Can I practise just Troubleshooting questions in a focused session?

Yes — use the session launcher on this page to start a 10-, 20-, 30- or 50-question session drawn entirely from the Troubleshooting domain.

CLCOR · topic practice

Troubleshooting practice questions

Practise Cisco Implementing Cisco Collaboration Core Technologies (CLCOR, 350-801, v2.0 blueprint, CCNP Collaboration) (CLCOR) Troubleshooting practice questions — original exam-style scenarios with answer choices, explanations, and analysis of common mistakes.

Courseiva uses original exam-style practice questions designed for learning and revision. The goal is to understand the concepts, recognise exam patterns, and improve through explanations — not memorise copied exam dumps.

Reviewed byJohnson Ajibi· MSc IT Security

20 questionsDomain: Troubleshooting

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What the exam tests

What to know about Troubleshooting

Troubleshooting questions test whether you can apply the concept in context, not just recognise a definition.

How the topic appears in realistic exam-style scenarios.

Which detail in the question changes the correct answer.

How to eliminate plausible but wrong options.

How to connect the question back to the wider exam objective.

Watch out for

Common Troubleshooting exam traps

▸Answering from memory before reading the full scenario.
▸Missing a constraint such as cost, availability, security, scope or command context.
▸Choosing a broad answer when the question asks for the most specific fix.
▸Ignoring why the wrong options are tempting.

Practice set

Troubleshooting questions

20 questions · select your answer, then reveal the explanation

Question 1mediummultiple choice

Read the full Troubleshooting explanation →

You are troubleshooting intermittent audio quality. You notice that RTCP packets are arriving with high variance. What does this indicate?

Trap 1: Latency

Latency is the total time, not the variance.

Trap 2: Codec Mismatch

A mismatch would result in no audio, not jitter.

Trap 3: Packet Loss

Packet loss is measured by gaps in sequence numbers.

Troubleshooting practice questions

What to know about Troubleshooting

Common Troubleshooting exam traps

Troubleshooting questions

You are troubleshooting intermittent audio quality. You notice that RTCP packets are arriving with high variance. What does this indicate?

You are troubleshooting a registration issue where the phone sends a REGISTER request, but the server does not respond. What is the most likely issue?

When troubleshooting a Hybrid Service, you need to collect 'Diagnostic Logs'. Where do you download these from?

Which THREE of the following troubleshooting steps should be performed if a Webex Hybrid connector is showing 'Down' in Control Hub? (Choose three)

An administrator is troubleshooting a failed Hybrid Calendar setup. The 'Connector' shows as 'Down' in Control Hub. What is the most likely reason?

When troubleshooting Webex Calling, which THREE factors are critical for maintaining call quality over a hybrid network?

Which log file is most useful for troubleshooting registration issues between an IP phone and CUCM?

When troubleshooting a Hybrid Media Service node, which log file is most critical for determining if the media is being routed correctly to the cloud?

You are troubleshooting high latency for Webex media. Which tool in Control Hub provides the best visibility into the path taken by the media packets?

You are troubleshooting a registration failure for a remote IP phone. The phone is configured to use an Expressway-E for MRA. Which DNS record is queried by the client to find the Expressway-E cluster?

You are troubleshooting a scenario where internal calls between two offices are using the G.711 codec, but you want them to use G.729 to save bandwidth. Where should you change the codec setting?

You are troubleshooting a one-way audio issue. The phone can register, but no audio is heard. What should you check first?

You are troubleshooting a scenario where internal calls between two sites are failing. The call fails immediately when dialed. What is the most effective way to verify that the Calling Search Space (CSS) has access to the destination partition?

A user is unable to use their 'Speed Dial' button. What is the first thing you should verify?

You are troubleshooting a scenario where video quality is degrading during periods of high data utilization. You identify that video traffic is being dropped in the network. What is the most likely cause if you are using CBWFQ?

A network administrator is troubleshooting one-way audio issues between a Cisco IP Phone and a Cisco TelePresence endpoint. The path traverses a router with a configured class-map. Which command would you use to verify the packet markings on the ingress interface?

You are troubleshooting a Webex Hybrid Calendar issue where meetings are missing for a specific user. What tool can you use to check the 'Calendar API' calls?

You are troubleshooting a scenario where G.711 is being used instead of the expected Opus codec between two endpoints in the same region. What is the most likely cause in the CUCM configuration?

You are troubleshooting a scenario where users in a Hybrid Calendar deployment cannot see free/busy information for their on-premises Exchange resources. Which tool in Control Hub provides the most granular logs for the Hybrid Calendar service?

You notice high latency on calls placed through a Local Gateway. Which metric should you inspect in the Webex Control Hub to confirm the issue is with the network path?

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Frequently asked questions

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Study resources

Exam traps to avoid