ANS-C01 Network Design Practice Question
Network Topology
Refer to the exhibit. A route table shows routes for a VPC. What is the correct interpretation of this route table?
⚠ Common exam trap
AWS often tests the distinction between internet gateway, NAT gateway, and virtual private gateway in route table entries, and the trap here is confusing the target of the default route (0.0.0.0/0) with the type of gateway used for internet access versus VPN or peering connections.
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 VPC has CIDR 10.0.0.0/16, an internet gateway, and a VPC peering connection to a VPC with CIDR 192.168.0.0/16
The route table shows a local route for 10.0.0.0/16, which is the VPC's CIDR, a default route (0.0.0.0/0) pointing to an internet gateway (igw-xxx), and a specific route for 192.168.0.0/16 pointing to a VPC peering connection (pcx-xxx). This configuration allows traffic destined for the peered VPC's CIDR to be routed over the peering connection, while all other internet-bound traffic goes through the internet gateway.
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 VPC has CIDR 10.0.0.0/16, an internet gateway, and a VPC peering connection to a VPC with CIDR 192.168.0.0/16
Why this is correct
Local route indicates VPC CIDR, default route to IGW, and peering route to peer CIDR.
- ✗
The VPC has CIDR 10.0.0.0/16, a NAT gateway, and a VPN connection to 192.168.0.0/16
Why it's wrong here
No NAT gateway or VPN in routes.
- ✗
The VPC has CIDR 192.168.0.0/16, an internet gateway, and a VPC peering connection to 10.0.0.0/16
Why it's wrong here
Local route is 10.0.0.0/16, not 192.168.0.0/16.
- ✗
The VPC has CIDR 10.0.0.0/16, a virtual private gateway, and a peering connection
Why it's wrong here
Virtual private gateway not present.
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