CCOA Incident Detection And Response Practice Question
Which TWO of the following are true regarding the use of hashing in digital forensics?
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
✓
Hashes ensure data integrity
Hashing ensures data integrity and can be used to identify known files (e.g., system files) to filter them out of an investigation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Hashes allow for data decryption
Why it's wrong here
Hashing is a one-way function.
- ✓
Hashes ensure data integrity
Why this is correct
Any change to the file will change the hash.
- ✓
Hashes can identify known files
Why this is correct
Used to match files against known malware databases.
- ✗
Hashes are the same as encryption
Why it's wrong here
Encryption is two-way; hashing is one-way.
- ✗
Hashes compress the data
Why it's wrong here
Hashing is not a compression algorithm.
About these practice questions
One of 203 original CCOA 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 ISACA exam blueprint
This CCOA practice question is part of Courseiva's free ISACA 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 CCOA exam.