easyMultiple ChoiceObjective-mapped
300-410 Practice Question: The default route distinguisher (RD) format when…
What is the default route distinguisher (RD) format when using the 'ip vrf' command without specifying an RD?
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
✓
The VRF will not be created until an RD is configured.
The RD is mandatory when creating a VRF. If not specified, the VRF will not be created. There is no default RD.
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 RD defaults to 0:0.
Why it's wrong here
Incorrect. There is no default RD.
- ✗
The RD is automatically derived from the router ID.
Why it's wrong here
Incorrect. RD must be explicitly configured.
- ✓
The VRF will not be created until an RD is configured.
Why this is correct
This is correct. The RD is required to create a VRF.
- ✗
The RD defaults to the ASN:1 format.
Why it's wrong here
Incorrect. There is no default; the RD must be manually assigned.
Go deeper
Related to this question
Learn chapter
OSPF Route Summarization and Filtering
Key term
MP-BGP for VPN
MP-BGP for VPN is an extension of the Border Gateway Protocol that carries multiple types of network layer information to enable scalable, isolated virtual private networks over a shared provider infrastructure.
Key term
MPLS Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
About these practice questions
One of 1,966 original 300-410 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 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 300-410 exam.