ANS-C01 Network Implementation Practice Question
Which TWO of the following are required to establish a BGP session over a Direct Connect private virtual interface? (Choose TWO.)
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that a Direct Connect gateway is mandatory for any Direct Connect setup, but it is only needed when connecting to multiple VPCs or using a transit gateway; a single VPC can use a virtual private gateway directly without a Direct Connect gateway.
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
✓
A VLAN ID
A VLAN ID is required because a Direct Connect private virtual interface operates over a single 802.1Q VLAN trunk. The VLAN ID uniquely identifies the virtual interface on the Direct Connect connection, allowing multiple virtual interfaces to share the same physical link. Without a VLAN ID, the Layer 2 encapsulation cannot be established, and the BGP session cannot form.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A VLAN ID
Why this is correct
Each virtual interface is associated with a VLAN.
- ✗
A public IP address for the BGP peer
Why it's wrong here
Private VIF uses private IP addresses.
- ✗
A Direct Connect gateway
Why it's wrong here
Direct Connect gateway is used for multiple VPC associations, not required for a single VPC.
- ✓
BGP session with a customer router and AWS router
Why this is correct
BGP is used to exchange routes.
- ✗
A VPN connection to the VPC
Why it's wrong here
Direct Connect is separate from VPN.
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Same concept, more angles
1 more way this is tested on ANS-C01
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Variation 1. Which TWO of the following are requirements for establishing an AWS Direct Connect private virtual interface? (Choose two.)
medium- A.Jumbo frames support (MTU 9001).
- B.A public IP address for the VIF.
- C.A public BGP ASN.
- ✓ D.A BGP session between the customer router and the AWS device.
- ✓ E.A VLAN ID that is unique within the Direct Connect connection.
Why D: A BGP session between the customer router and the AWS device is a fundamental requirement for establishing a private virtual interface. The private VIF uses BGP to exchange routing information (typically a /30 or /31 subnet) between the on-premises network and the VPC, enabling dynamic route advertisement and failover. Without this BGP session, the VIF cannot be activated or used for traffic.
JA
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.