easyMultiple SelectObjective-mapped
CV0-004 Practice Question: A cloud administrator is deploying a new…
A cloud administrator is deploying a new application in a cloud environment. The application requires high availability and fault tolerance. Which two design principles should the administrator implement? (Select TWO).
⚠ Common exam trap
It's easy for candidates to think cost-saving strategies (single instance, single volume) are acceptable for high availability, but the exam requires understanding that fault tolerance demands redundancy at every layer—compute, storage, and network—across multiple failure domains.
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
✓
Place a load balancer in front of the application.
Placing a load balancer in front of the application distributes incoming traffic across multiple healthy instances, ensuring that if one instance fails, traffic is redirected to others, which provides high availability and fault tolerance. Option B is correct because deploying an auto-scaling group across multiple Availability Zones (AZs) ensures that if an entire AZ fails, the application continues running in another AZ, and the auto-scaling group automatically replaces failed instances to maintain capacity.
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 a load balancer in front of the application.
Why this is correct
Correct. Load balancer distributes traffic and detects unhealthy instances, improving availability.
- ✓
Use an auto-scaling group across multiple availability zones.
Why this is correct
Correct. Distributing instances across zones ensures application survives zone failure.
- ✗
Deploy all instances in a single availability zone.
Why it's wrong here
Single zone is a single point of failure, not highly available.
- ✗
Use a single instance to reduce costs.
Why it's wrong here
Single instance is not fault tolerant or highly available.
- ✗
Store all data on a single volume without replication.
Why it's wrong here
Single volume is a single point of failure and offers no fault tolerance.
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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.