Question 401 of 977
hardMultiple SelectObjective-mapped
CV0-004 Practice Question: Is troubleshooting a performance issue with a web…
A cloud engineer is troubleshooting a performance issue with a web application that uses a cloud load balancer and multiple backend instances. Users report intermittent slow responses. The engineer reviews metrics and finds that CPU utilization on backend instances stays below 50% but network throughput is near the instance limit. Which THREE actions should the engineer take to improve performance?
⚠ Common exam trap
CompTIA often tests the misconception that increasing the number of instances always solves performance issues, when in reality the bottleneck may be the network bandwidth per instance, requiring a larger instance type or distribution across AZs to utilize aggregate bandwidth.
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
✓
Distribute instances across multiple availability zones.
Distributing instances across multiple availability zones (AZs) improves fault tolerance and can reduce network congestion by spreading traffic across physically separate infrastructure. In this scenario, network throughput is near the instance limit, so adding instances in different AZs allows the load balancer to distribute traffic more evenly, preventing any single instance from being overwhelmed. This also leverages the load balancer's cross-zone load balancing capability, which can improve overall throughput and reduce latency for users.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change the load balancing algorithm to least connections.
Why it's wrong here
Algorithm change does not increase network capacity.
- ✓
Distribute instances across multiple availability zones.
Why this is correct
Multi-zone deployment can improve resilience and distribute load across network paths.
- ✓
Upgrade to an instance type with higher network bandwidth.
Why this is correct
Higher bandwidth directly addresses network throughput limit.
- ✗
Increase the number of backend instances.
Why it's wrong here
More instances distribute requests but each still has same bandwidth limit; overall throughput may still be constrained by bandwidth per instance if traffic is not evenly distributed.
- ✓
Enable connection draining on the load balancer.
Why this is correct
Connection draining helps manage traffic during scale-in or instance failures, improving user experience.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 30, 2026
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.