CRISC Information Technology and Security Practice Question
An organization is planning for post-quantum cryptography migration. Which THREE of the following are key considerations for this migration?
⚠ Common exam trap
Test-takers frequently confuse 'crypto agility' (Option C) with 'immediate hardware replacement' (Option B), or assume that cloud services must be eliminated (Option E) rather than recognizing that inventory, agility, and timeline are the three core strategic considerations for a phased, risk-based migration.
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
✓
Inventory of all cryptographic assets and dependencies
A comprehensive inventory of cryptographic assets and dependencies is essential to identify all systems, applications, and data that rely on current cryptographic algorithms (e.g., RSA, ECDSA, Diffie-Hellman). Without this inventory, the organization cannot prioritize migration efforts, assess impact, or ensure that no legacy cryptographic dependency is overlooked during the transition to post-quantum algorithms.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Inventory of all cryptographic assets and dependencies
Why this is correct
Knowing where cryptography is used is essential.
- ✗
Replacing all existing hardware immediately
Why it's wrong here
Immediate replacement is impractical; migration is phased.
- ✓
Crypto agility to easily replace algorithms
Why this is correct
Systems must support algorithm changes without major rework.
- ✓
Timeline estimates for when quantum computers can break current cryptography
Why this is correct
Migration must be completed before threat matures.
- ✗
Eliminating cloud services to reduce risk
Why it's wrong here
Cloud services are not inherently riskier; elimination is not a practical migration strategy.
Quick reference
Asymmetric Encryption Algorithm Comparison
| Algorithm | Key Exchange | Signatures | Equivalent Security Key | Notes |
|---|---|---|---|---|
| RSA-3072 | Yes | Yes | 128-bit | Widely deployed; slow for bulk data |
| ECDSA P-256 | No | Yes | 128-bit | Fast signatures; standard TLS certs |
| ECDH / ECDHE | Yes | No | 128-bit | Perfect forward secrecy in TLS 1.3 |
| DH / DHE | Yes | No | 128-bit (3072-bit key) | Replaced by ECDHE in modern TLS |
| Ed25519 | No | Yes | ~128-bit | SSH keys, modern PKI |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CRISC 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 CRISC exam.