350-501 Security and Services Practice Question
A service provider wants to prevent BGP hijacking by validating the origin AS of received routes. They deploy RPKI with Route Origin Authorizations (ROAs). When a router receives a prefix with an origin AS that matches the ROA, what is the BGP Origin 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
✓
Valid
If the prefix and origin AS match a ROA exactly, the validation state is 'valid'. If no ROA is found, it's 'not-found'. If there is a mismatch, it's 'invalid'.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Invalid
Why it's wrong here
Invalid occurs when there is a mismatch with a ROA.
- ✗
Unknown
Why it's wrong here
Unknown is not a standard RPKI state.
- ✗
Not-found
Why it's wrong here
Not-found occurs when no ROA exists for the prefix.
- ✓
Valid
Why this is correct
A matching ROA results in 'valid' state.
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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.