350-501 MPLS and Segment Routing Practice Question
Which two are characteristics of the Anycast SID in Segment Routing? (Choose two.)
⚠ Common exam trap
Cisco often tests the distinction between Node SID (unique per router) and Anycast SID (shared among routers), so the trap here is confusing the 'shared' nature of Anycast SID with the 'unique' nature of Node SID, leading candidates to incorrectly select Option C.
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
✓
It provides redundancy and fast convergence by allowing traffic to be rerouted to another router.
Anycast SIDs are shared among multiple routers in the same anycast group, allowing any of those routers to process traffic destined for that SID. This provides redundancy and fast convergence because if one router fails, traffic is automatically rerouted to another router in the group without requiring control-plane signaling changes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It identifies an adjacency between two routers.
Why it's wrong here
Adjacency SID identifies a link, not anycast.
- ✗
It is typically used as an Adj-SID for load balancing.
Why it's wrong here
Anycast SID is a prefix SID, not an Adj-SID.
- ✗
It is unique per node and identifies a specific router.
Why it's wrong here
Uniqueness is for Node-SID, not Anycast SID.
- ✓
It provides redundancy and fast convergence by allowing traffic to be rerouted to another router.
Why this is correct
If one anycast router fails, traffic goes to another.
- ✓
It is shared among multiple routers in the same anycast group.
Why this is correct
Multiple routers advertise the same prefix SID.
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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.