CKAD Application Observability and Maintenance Practice Question
This CKAD practice question tests your understanding of application observability and maintenance. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You need to configure a liveness probe for a container that listens on TCP port 8080. The probe should wait 5 seconds before starting, check every 10 seconds, and timeout after 2 seconds. Which YAML snippet correctly configures this?
Option A is correct because it uses the `tcpSocket` probe type to check TCP port 8080, which is appropriate for a container that listens on TCP. The fields `initialDelaySeconds: 5`, `periodSeconds: 10`, and `timeoutSeconds: 2` match the required timing parameters exactly as specified in the Kubernetes API.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the probe types (tcpSocket vs. httpGet vs. exec) and may pick an httpGet probe (option D) because it is more common, or use incorrect field names (option C) due to familiarity with other orchestrators like Docker Compose.
Detailed technical explanation
How to think about this question
A `tcpSocket` probe works by attempting to open a TCP connection to the specified port; if the connection succeeds, the probe is considered successful. The `initialDelaySeconds` gives the container time to start before the first probe, while `timeoutSeconds` sets the maximum time to wait for the connection; if the timeout is exceeded, the probe fails. In real-world scenarios, a TCP probe is ideal for non-HTTP services like databases or custom TCP servers, where an HTTP GET would be inappropriate.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CKAD question in full detail.
Application Observability and Maintenance — This question tests Application Observability and Maintenance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: livenessProbe:
tcpSocket:
port: 8080
initialDelaySeconds: 5
periodSeconds: 10
timeoutSeconds: 2 — Option A is correct because it uses the `tcpSocket` probe type to check TCP port 8080, which is appropriate for a container that listens on TCP. The fields `initialDelaySeconds: 5`, `periodSeconds: 10`, and `timeoutSeconds: 2` match the required timing parameters exactly as specified in the Kubernetes API.
What should I do if I get this CKAD question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This CKAD practice question is part of Courseiva's free CNCF certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CKAD exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.