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CV0-004 Practice Question: A developer deployed a new version of a cloud…
A developer deployed a new version of a cloud function, but the function is returning 500 errors. The previous version worked fine. What is the most likely cause?
⚠ Common exam trap
CompTIA often tests the distinction between code-level errors (500) and resource/configuration errors (memory, timeout, runtime), tempting candidates to blame environment settings when the actual cause is a bug introduced in the new code.
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
✓
The new code contains a runtime error.
The most likely cause of 500 errors after deploying a new version of a cloud function is a runtime error in the new code. A 500 Internal Server Error indicates that the function's code executed but threw an unhandled exception or logic error, which did not exist in the previous working version. Since the environment (runtime, memory, timeout) remained unchanged, the introduction of faulty code is the primary suspect.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The function is using an outdated runtime.
Why it's wrong here
An outdated runtime would typically fail at deployment or invocation immediately, not surface as 500 errors only after a new version ships while the prior version ran cleanly. It is tempting because runtime deprecation genuinely breaks functions, but that scenario involves platform-wide failures, not a version-specific regression.
- ✓
The new code contains a runtime error.
Why this is correct
A 500 error indicates server-side execution failure. Since the previous version worked, the newly deployed code most likely throws an unhandled exception or runtime error during execution, which the platform surfaces as an internal server error.
- ✗
The function's memory allocation is too low.
Why it's wrong here
Insufficient memory triggers out-of-memory termination or cold-start failures rather than consistent 500 responses, and the prior version ran within the same allocation. It is tempting because memory limits genuinely break functions, but that scenario shows platform-level errors, not a regression introduced by new code.
- ✗
The function's timeout is set too short.
Why it's wrong here
A short timeout produces timeout errors or truncated execution, and would have affected the previous version too unless the new code is slower. It is tempting because timeouts do cause invocation failures, but the stem attributes the fault specifically to the newly deployed version, pointing to a code defect.
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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.