ANS-C01 Network Design Practice Question
Network Topology
A network engineer is troubleshooting connectivity to a VPC endpoint service. The engineer runs the CLI command shown in the exhibit. The output shows two service names. Which statement is correct based on this output?
⚠ Common exam trap
AWS often tests the distinction between Gateway VPC endpoints and Interface VPC endpoints, and the trap here is that candidates may assume any service name returned by `describe-vpc-endpoint-services` is a Gateway endpoint, but the command lists all endpoint services, and the correct interpretation depends on the service name format and the type of endpoint supported.
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 engineer can create an interface VPC endpoint to the services
The CLI command `aws ec2 describe-vpc-endpoint-services` returns a list of AWS services that support VPC endpoints. The output shows two service names, which are AWS-managed services (e.g., `com.amazonaws.vpce.us-east-1.s3`). These services can be accessed via interface VPC endpoints, which use Elastic Network Interfaces (ENIs) with private IP addresses to route traffic privately within the VPC. Therefore, the engineer can create an interface VPC endpoint to these services.
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 engineer can create an interface VPC endpoint to the services
Why this is correct
Correct; the command returns interface endpoint services, which can be used to create interface VPC endpoints.
- ✗
The services are Gateway VPC endpoints
Why it's wrong here
Incorrect; Gateway endpoints are for S3 and DynamoDB, not shown here.
- ✗
The services are VPC peering connections
Why it's wrong here
Incorrect; VPC peering is not a VPC endpoint service.
- ✗
The services are Gateway Load Balancer endpoint services
Why it's wrong here
Incorrect; the filter specifies Interface type.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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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.