CKAD Application Observability and Maintenance Practice Question
You are designing a health check strategy for a web application. Which TWO probe types should you configure to ensure that traffic is only sent to pods that are ready to serve?
⚠ Common exam trap
It's easy for candidates to confuse probe handlers (like HTTP GET or TCP socket) with probe types (like readiness, liveness, startup), leading them to select handlers instead of the correct probe types that control traffic routing.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Readiness probe
A Readiness probe (Option A) is specifically designed to determine whether a pod is ready to serve traffic. If the probe fails, the pod is removed from the Service's endpoints, ensuring traffic is only sent to pods that are ready. This directly fulfills the requirement of controlling traffic routing based on pod readiness.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Readiness probe
Why this is correct
Controls whether a pod is included in service endpoints.
- ✗
TCP socket probe
Why it's wrong here
This is a type of probe handler, not a probe type.
- ✓
Startup probe
Why this is correct
Delays liveness and readiness checks until startup completes, preventing premature traffic.
- ✗
HTTP GET probe
Why it's wrong here
This is a type of probe handler, not a probe type.
- ✗
Liveness probe
Why it's wrong here
Restarts unhealthy pods but does not affect traffic routing.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.