350-501 Security and Services Practice Question
An SP is implementing RPKI to validate BGP route origins. They have set up an RPKI cache and configured routers with the RPKI-to-Router (RTR) protocol. During validation, a route is received with an AS that does not match any ROA. What is the validation state?
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
✓
Not-found
If no ROA exists for the prefix, the state is 'not-found'. 'Invalid' means the AS does not match an existing ROA. 'Valid' means the AS matches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Valid
Why it's wrong here
Valid requires a matching ROA.
- ✓
Not-found
Why this is correct
No ROA found for the prefix results in 'not-found'.
- ✗
Unknown
Why it's wrong here
'Unknown' is not a standard RPKI validation state.
- ✗
Invalid
Why it's wrong here
Invalid occurs when a ROA exists but the AS does not match; here no ROA exists.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-501 practice question is part of Courseiva's free Cisco 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 350-501 exam.