350-501 Security and Services Practice Question
A service provider is implementing BGP security using RPKI. Which three components are required for RPKI-based BGP origin validation? (Choose three.)
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
✓
Route Origin Authorization (ROA)
RPKI requires: 1) ROA (Route Origin Authorization) created by the prefix holder; 2) Relying Party (cache server) that fetches and validates ROAs; 3) RTR protocol to download the VRP (Validated ROA Payload) to routers. BGPsec is a separate standard for path validation. IS-IS is not involved.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Route Origin Authorization (ROA)
Why this is correct
ROA authorizes an AS to originate a prefix.
- ✗
BGPsec path validation
Why it's wrong here
BGPsec is for path validation, not origin validation.
- ✓
Relying Party (cache server)
Why this is correct
The cache server processes ROAs and provides VRP data.
- ✗
IS-IS routing protocol
Why it's wrong here
IS-IS is not part of RPKI.
- ✓
RPKI-to-Router (RTR) protocol
Why this is correct
RTR is used to distribute VRP from cache to routers.
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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.