ANS-C01 Network Implementation Practice Question
A company is using AWS Direct Connect to connect its on-premises network to a VPC via a private virtual interface (VIF) attached to a virtual private gateway (VGW). The company wants to add redundant connectivity using a second Direct Connect connection from a different provider. The network team proposes using a Direct Connect gateway (DXGW) with two private VIFs from different connections, each attached to the DXGW. The DXGW will be associated with the VGW. Which THREE steps are required to complete this configuration? (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
✓
Associate both private virtual interfaces with the same Direct Connect gateway.
To implement redundant Direct Connect connectivity using a Direct Connect gateway (DXGW), the correct steps are: associate both private virtual interfaces (VIFs) with the same DXGW (B), associate the DXGW with the virtual private gateway (VGW) (C), and advertise the on-premises prefixes over both BGP sessions to enable active-active or failover (D). Option A is incorrect because route tables in VPC subnets must point to the VGW, not the DXGW directly. Option E is incorrect because only one VGW is needed per VPC; separate VGWs would not provide the desired redundancy and would complicate routing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Add routes to the VPC subnets' route tables pointing to the Direct Connect gateway.
Why it's wrong here
Routes point to VGW, not DXGW.
- ✓
Associate both private virtual interfaces with the same Direct Connect gateway.
Why this is correct
Both VIFs connect to the same DXGW for redundancy.
- ✓
Associate the Direct Connect gateway with the virtual private gateway.
Why this is correct
DXGW must be associated with VGW to route traffic to VPC.
- ✓
Advertise the on-premises prefixes over both BGP sessions to enable active-active or failover.
Why this is correct
Both VIFs advertise routes for redundancy.
- ✗
Create a separate virtual private gateway for each Direct Connect connection.
Why it's wrong here
Only one VGW is needed per VPC.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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