CV0-004 Troubleshooting Practice Question
A cloud architect is designing a multi-tier application that must be resilient to the failure of an entire availability zone. Which of the following strategies BEST meets this requirement?
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
✓
Deploy application instances across three availability zones with a load balancer
Deploying across multiple availability zones provides high availability. Option A is wrong because vertical scaling does not address zone failure. Option B is wrong because auto-scaling within a single zone does not help if the zone fails. Option C is wrong because a single load balancer in one zone is a single point of failure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Place all instances behind a single load balancer in one zone
Why it's wrong here
Single load balancer is a single point of failure.
- ✗
Implement auto-scaling within the same availability zone
Why it's wrong here
Auto-scaling within one zone does not protect from zone failure.
- ✗
Use larger instance types to handle more load
Why it's wrong here
Scaling up does not provide zone redundancy.
- ✓
Deploy application instances across three availability zones with a load balancer
Why this is correct
Multi-AZ deployment ensures continued operation if one zone fails.
Go deeper
Related to this question
About these practice questions
This CV0-004 question is part of Courseiva's 977-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 by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.