ISC Security Planning And Engineering Practice Question
During a system migration, you need to ensure integrity of transferred data. What is the best cryptographic method?
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
✓
Use HMAC for the data stream.
Using HMAC (Hash-based Message Authentication Code) with a shared key ensures both integrity and authenticity of the data stream.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use TLS 1.0.
Why it's wrong here
TLS 1.0 is deprecated and insecure.
- ✗
Use a simple CRC32 checksum.
Why it's wrong here
CRC32 is for error detection, not security; it can be easily forged.
- ✓
Use HMAC for the data stream.
Why this is correct
HMAC verifies the integrity and sender authenticity.
- ✗
Use base64 encoding.
Why it's wrong here
Base64 is an encoding format, not a security control.
About these practice questions
One of 209 original ISC practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² 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 ISC exam.