- A
Inventory of all cryptographic assets and dependencies
Knowing where cryptography is used is essential.
- B
Replacing all existing hardware immediately
Why wrong: Immediate replacement is impractical; migration is phased.
- C
Crypto agility to easily replace algorithms
Systems must support algorithm changes without major rework.
- D
Timeline estimates for when quantum computers can break current cryptography
Migration must be completed before threat matures.
- E
Eliminating cloud services to reduce risk
Why wrong: Cloud services are not inherently riskier; elimination is not a practical migration strategy.
Question 763 of 1,000
CRISC Information Technology and Security Practice Question
This CRISC practice question tests your understanding of information technology and security. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization is planning for post-quantum cryptography migration. Which THREE of the following are key considerations for this 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
Option A is correct because 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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Timeline estimates for when quantum computers can break current cryptography
Why this is correct
Migration must be completed before threat matures.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Eliminating cloud services to reduce risk
Why it's wrong here
Cloud services are not inherently riskier; elimination is not a practical migration strategy.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may 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.
Detailed technical explanation
How to think about this question
Post-quantum cryptography migration involves transitioning from current public-key algorithms (e.g., RSA-2048, ECDH, ECDSA) to quantum-resistant algorithms standardized by NIST (e.g., CRYSTALS-Kyber for key encapsulation, CRYSTALS-Dilithium for digital signatures). Crypto agility (Option C) requires that systems support algorithm negotiation and replacement without code changes, often implemented via cryptographic providers like OpenSSL's provider interface or Java's JCA/JCE, enabling hot-swapping of algorithms. Timeline estimates (Option D) are critical because Shor's algorithm can break RSA and ECC in polynomial time on a sufficiently large quantum computer, and current estimates suggest a 10-20 year window before such machines are viable, driving urgency for migration planning.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CRISC exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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 |
What to study next
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FAQ
Questions learners often ask
What does this CRISC question test?
Information Technology and Security — This question tests Information Technology and Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Inventory of all cryptographic assets and dependencies — Option A is correct because 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.
What should I do if I get this CRISC question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
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.
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