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CV0-004 Practice Question: Ensure high availability for a stateless web…

A company wants to ensure high availability for a stateless web application. Which architecture should be recommended?

⚠ Common exam trap

Test-takers frequently confuse high availability with redundancy within a single zone, failing to recognize that true high availability requires geographic or zone-level separation to survive infrastructure failures.

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

✓

One VM in each of two availability zones with a load balancer

Deploying one VM in each of two availability zones with a load balancer ensures high availability by eliminating a single point of failure. If one availability zone fails, the load balancer automatically routes traffic to the healthy VM in the other zone, keeping the stateless web application accessible. This architecture aligns with the principle of fault tolerance for stateless applications, where no session state is lost during failover.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Two VMs in the same availability zone with a load balancer

    Why it's wrong here

    Both VMs are in the same zone; a zone failure takes down both.

  • ✓

    One VM in each of two availability zones with a load balancer

    Why this is correct

    This provides HA across zones; if one zone fails, traffic is routed to the other.

  • ✗

    Single VM with daily backups

    Why it's wrong here

    A single VM is a single point of failure; backups do not provide HA.

  • ✗

    A single large VM with auto-recovery

    Why it's wrong here

    Auto-recovery restarts the VM but does not prevent downtime during a zone failure.

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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.