This CCSP practice question tests your understanding of cloud application security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Exhibit
Error: Exception in thread "main" java.lang.SecurityException: Unauthorized access
at com.cloudapp.auth.TokenValidator.validate(SourceFile:112)
at com.cloudapp.api.ApiGateway.handleRequest(SourceFile:45)
Caused by: com.cloudapp.auth.InvalidTokenException: Token expired at 2024-11-20T10:30:00Z
at com.cloudapp.auth.JwtParser.parse(SourceFile:78)
Refer to the exhibit. A developer reports that users are being denied access to a cloud application. The error log shows the above. What is the most likely cause of the denial?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Error: Exception in thread "main" java.lang.SecurityException: Unauthorized access
at com.cloudapp.auth.TokenValidator.validate(SourceFile:112)
at com.cloudapp.api.ApiGateway.handleRequest(SourceFile:45)
Caused by: com.cloudapp.auth.InvalidTokenException: Token expired at 2024-11-20T10:30:00Z
at com.cloudapp.auth.JwtParser.parse(SourceFile:78)
A
The token was issued by an untrusted issuer
Why wrong: The error does not mention issuer trust; it specifically says token expired.
B
The token lacks required permissions
Why wrong: Lack of permissions would result in a different error, not a token expiration error.
C
The token's expiration time has passed
The log explicitly states 'Token expired at 2024-11-20T10:30:00Z', indicating expiration.
D
The token's signature is invalid
Why wrong: Signature validation would produce a different error; the log shows 'InvalidTokenException: Token expired'.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The token's expiration time has passed
The error log indicates that the token's expiration time has passed, which is a standard validation check in OAuth 2.0 and OpenID Connect (OIDC) flows. When a token's `exp` claim is less than the current server time, the authorization server or resource server rejects the request with an 'access denied' or similar error. This is the most direct cause of the denial shown in the exhibit.
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.
✗
The token was issued by an untrusted issuer
Why it's wrong here
The error does not mention issuer trust; it specifically says token expired.
✗
The token lacks required permissions
Why it's wrong here
Lack of permissions would result in a different error, not a token expiration error.
✓
The token's expiration time has passed
Why this is correct
The log explicitly states 'Token expired at 2024-11-20T10:30:00Z', indicating expiration.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The token's signature is invalid
Why it's wrong here
Signature validation would produce a different error; the log shows 'InvalidTokenException: Token expired'.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the distinction between token validation steps (signature, issuer, expiration, permissions) and the specific error messages each step produces, so candidates must match the error log text to the correct validation failure rather than assuming a generic 'access denied' reason.
Trap categories for this question
Command / output trap
Signature validation would produce a different error; the log shows 'InvalidTokenException: Token expired'.
Detailed technical explanation
How to think about this question
Token expiration is enforced by comparing the `exp` (expiration time) claim in the JWT against the current system time, typically using Network Time Protocol (NTP) synchronized clocks. In OAuth 2.0, access tokens often have short lifetimes (e.g., 1 hour), and refresh tokens are used to obtain new ones; if the refresh token also expires, the user must re-authenticate. Real-world scenarios include clock skew issues where a token appears expired due to time drift, which can be mitigated by allowing a small leeway (e.g., 30 seconds) as per RFC 7519.
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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Cloud Application Security — This question tests Cloud Application Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The token's expiration time has passed — The error log indicates that the token's expiration time has passed, which is a standard validation check in OAuth 2.0 and OpenID Connect (OIDC) flows. When a token's `exp` claim is less than the current server time, the authorization server or resource server rejects the request with an 'access denied' or similar error. This is the most direct cause of the denial shown in the exhibit.
What should I do if I get this CCSP question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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