ANS-C01 Network Implementation Practice Question
A company is migrating a legacy application to AWS. The application requires multicast communication between instances. The company needs to implement a multicast solution within a VPC. Which AWS service or feature should be used to support multicast?
⚠ Common exam trap
The ANS-C01 exam often tests the misconception that VPC route tables or VPC peering can handle multicast, but AWS explicitly does not support multicast natively in VPCs, requiring Transit Gateway multicast domains as the only scalable solution.
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
✓
Create a Transit Gateway multicast domain
AWS Transit Gateway supports multicast through the creation of a Transit Gateway multicast domain. This feature allows you to send multicast traffic from a source to multiple receivers within a VPC, which is required for legacy applications that rely on multicast communication. Transit Gateway multicast domains work with IGMP (Internet Group Management Protocol) to manage group memberships and route multicast traffic efficiently.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create a Transit Gateway multicast domain
Why this is correct
Transit Gateway supports multicast groups and can distribute multicast traffic.
- ✗
Configure multicast in the VPC's route tables
Why it's wrong here
VPC does not support multicast natively.
- ✗
Use AWS Global Accelerator for multicast distribution
Why it's wrong here
Global Accelerator uses anycast, not multicast.
- ✗
Set up VPC peering to enable multicast between subnets
Why it's wrong here
VPC peering does not support 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.