Google PCA Practice Question: Analysing and Optimising Technical and Business Processes
A team uses Cloud CDN to cache static assets. They update assets by deploying new versions with new URLs. However, sometimes they need to invalidate the cache for a critical fix immediately without changing the URL. What should they do?
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
✓
Use cache invalidation to remove the cached objects
Cloud CDN supports cache invalidation via gcloud CLI or API. Setting short TTL reduces cache duration but not immediate. Using cache-busting (changing URL) is the recommended approach but not feasible for this immediate fix. Increasing TTL makes it worse.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase the TTL to max
Why it's wrong here
Increasing TTL makes the problem worse.
- ✗
Change the URL to a new version
Why it's wrong here
This is recommended for new deployments but not for immediate fix without URL change.
- ✓
Use cache invalidation to remove the cached objects
Why this is correct
Cache invalidation is designed to immediately purge cached content.
- ✗
Set a short TTL (e.g., 1 minute)
Why it's wrong here
Short TTL reduces cache duration but does not force immediate invalidation.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
gcloud CLI
The gcloud CLI is a command-line tool that lets you manage Google Cloud resources by typing commands instead of clicking through a web interface.
Key term
Cloud CDN
A Cloud CDN is a network of servers spread around the world that stores copies of your website or app content so it loads faster for users no matter where they are.
About these practice questions
One of 955 original PCA practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCA practice question is part of Courseiva's free Google Cloud 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.