PCA Observability Concepts Practice Question
When evaluating the 'Traffic' golden signal, what is the best metric to watch for a web service?
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
✓
Requests per second.
Request rate (requests per second) is the standard way to measure traffic volume.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CPU usage percentage.
Why it's wrong here
That is saturation.
- ✓
Requests per second.
Why this is correct
This measures traffic volume.
- ✗
HTTP error count.
Why it's wrong here
That is the Error signal.
- ✗
Response latency.
Why it's wrong here
That is the Latency signal.
About these practice questions
This PCA question is part of Courseiva's 304-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CNCF / Linux Foundation exam blueprint
This PCA practice question is part of Courseiva's free CNCF / Linux Foundation 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 PCA exam.