ANS-C01 Network Implementation Practice Question
A company is migrating an on-premises application to AWS. The application uses multicast for discovery. Which AWS service supports multicast traffic within a VPC?
⚠ Common exam trap
Test-takers frequently assume VPC peering supports all traffic types, but AWS explicitly does not support multicast or broadcast over VPC peering, making Transit Gateway the only native multicast solution within a VPC.
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
✓
AWS Transit Gateway
AWS Transit Gateway supports multicast traffic within a VPC by acting as a multicast router. It allows you to create multicast domains and associate subnets, enabling multicast group communication (using IGMP) for applications like service discovery. This makes it the correct choice for migrating an on-premises application that relies on multicast.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
AWS Transit Gateway
Why this is correct
Supports multicast groups and routing.
- ✗
VPC peering
Why it's wrong here
Does not support multicast.
- ✗
Application Load Balancer
Why it's wrong here
Application Load Balancer is not for multicast.
- ✗
Amazon CloudFront
Why it's wrong here
CloudFront is for CDN, not VPC multicast.
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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.