Quick Answer
The answer is 24h. This is correct because Vault determines the final certificate TTL by applying the most restrictive value among the role’s configured `ttl`, the mount’s default lease TTL, and the user’s requested TTL. In this scenario, the role’s `ttl` of 24h is the shortest, so it overrides both the requested 48h and the mount default of 72h, resulting in a certificate valid for only 24 hours. On the HashiCorp Vault Associate VA-003 exam, this concept tests your understanding of how the PKI secrets engine resolves TTL conflicts, often appearing as a scenario where a candidate must identify which TTL wins. A common trap is assuming the mount default or the requested TTL takes precedence, but Vault always enforces the most restrictive limit. Remember the memory tip: “Shortest wins” — when comparing role ttl, mount default, and requested TTL, the smallest value always dictates the certificate’s validity period.
This VA-003 practice question tests your understanding of manage vault leases. 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 uses Vault to issue certificates via the PKI secrets engine. They have set the default lease TTL on the PKI mount to 72h, and the role's ttl to 24h. A user requests a certificate with a requested TTL of 48h. What will be the actual TTL of the issued certificate?
The request will be rejected because the requested TTL exceeds the role's ttl.
Why wrong: The request is accepted, but the TTL is capped.
48h
Why wrong: The user's requested TTL is capped by the role's ttl.
24h
The role's ttl is the effective TTL when it is lower than the mount default.
72h
Why wrong: The mount default is overridden by the role's ttl.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
24h
The correct answer is C (24h) because when a certificate request is made, Vault applies the most restrictive TTL among the role's configured `ttl`, the mount's default lease TTL, and the requested TTL. Here, the role's `ttl` of 24h is the shortest, so it overrides both the requested 48h and the mount default of 72h, resulting in a certificate with a 24-hour validity.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The request will be rejected because the requested TTL exceeds the role's ttl.
Why it's wrong here
The request is accepted, but the TTL is capped.
48h
Why it's wrong here
The user's requested TTL is capped by the role's ttl.
24h
Why this is correct
The role's ttl is the effective TTL when it is lower than the mount default.
Related concept
Read the scenario before looking for a memorised answer.
72h
Why it's wrong here
The mount default is overridden by the role's ttl.
Common exam traps
The trap here is that candidates often assume the requested TTL is honored as long as it is within the mount's default lease TTL, overlooking that the role's ttl is the authoritative cap and that Vault silently truncates rather than rejects the request.
Detailed technical explanation
Under the hood, Vault's PKI secrets engine evaluates TTLs in a specific order: the role's `ttl` (if set) is the maximum allowed, the mount's `default_lease_ttl` is the fallback if no role TTL is specified, and the requested TTL is capped by the role's TTL. This behavior aligns with RFC 5280 certificate validity constraints and ensures that role-based policies cannot be bypassed by a user requesting a longer validity. In practice, this prevents a user from obtaining a certificate that outlives the intended rotation window defined by the role.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the VA-003 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.
What to study next
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FAQ
Manage Vault leases — This question tests Manage Vault leases — Read the scenario before looking for a memorised answer..
The correct answer is: 24h — The correct answer is C (24h) because when a certificate request is made, Vault applies the most restrictive TTL among the role's configured `ttl`, the mount's default lease TTL, and the requested TTL. Here, the role's `ttl` of 24h is the shortest, so it overrides both the requested 48h and the mount default of 72h, resulting in a certificate with a 24-hour validity.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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