ANS-C01 Network Management and Operations Practice Question
A company has a Direct Connect connection with two private virtual interfaces (VIFs) to two different VPCs. The company wants to use the same Direct Connect connection for both VPCs, but the on-premises router only has one physical port. The network engineer configures a single BGP session over a VLAN-tagged interface. After configuration, only one VPC is reachable. What is the most likely reason?
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
✓
Each private VIF requires a separate BGP session, and only one session was configured
Each private VIF requires a separate BGP session. With only one BGP session configured, only one VIF can be established. Option A is incorrect because the same BGP ASN can be used on both VIFs if connecting through a Direct Connect gateway. Option B is incorrect because the BGP peer IPs can be in different subnets. Option C is incorrect because each VIF requires a unique VLAN ID; they cannot share the same VLAN.
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 on-premises router is using the same BGP ASN for both VIFs, which is not allowed
Why it's wrong here
Same ASN is allowed with Direct Connect gateway.
- ✗
The BGP peer IP addresses must be in the same subnet for both VIFs
Why it's wrong here
Peer IPs can be in different subnets.
- ✗
The VLAN ID must be the same for both VIFs to work over a single physical port
Why it's wrong here
Each VIF requires a unique VLAN ID.
- ✓
Each private VIF requires a separate BGP session, and only one session was configured
Why this is correct
Each VIF needs its own BGP session.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 practice question is part of Courseiva's free Amazon Web Services 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 ANS-C01 exam.