- A
AWS Direct Connect with multicast
Why wrong: AWS Direct Connect does not natively support multicast within a VPC. While it can transport multicast if configured with on-premises, it is not a service or feature that directly supports multicast within the VPC.
- B
AWS Transit Gateway with multicast domain
AWS Transit Gateway multicast domains provide native support for multicast traffic within a VPC, allowing service discovery traffic to be forwarded between VPCs or on-premises networks.
- C
VPC multicast groups using network interfaces
Why wrong: VPC multicast groups are not natively supported in AWS. Multicast within a VPC must be enabled through Transit Gateway multicast domains, not through direct VPC network interfaces.
- D
Internet Gateway (IGW)
Why wrong: Internet Gateway (IGW) only supports unicast traffic and cannot handle multicast.
- E
VPC Peering
Why wrong: VPC Peering only supports unicast traffic and does not support multicast.
ANS-C01 Multicast in AWS Practice Question
This ANS-C01 practice question tests your understanding of network design. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. A key principle to apply: multicast in AWS. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is migrating a legacy application to AWS. The application uses multicast for service discovery. Which THREE AWS services or features can be used to support multicast traffic 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 with multicast domain
The question asks for three options, but only AWS Transit Gateway multicast domains (option B) natively support multicast traffic within a VPC. The other listed options do not support multicast: Direct Connect requires additional on-premises configuration and does not provide VPC-native multicast, VPC multicast groups are not a supported feature, Internet Gateway only handles unicast, and VPC Peering also only supports unicast. Therefore, only one correct answer is available among the choices.
Key principle: Multicast in AWS
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 Direct Connect with multicast
Why it's wrong here
AWS Direct Connect does not natively support multicast within a VPC. While it can transport multicast if configured with on-premises, it is not a service or feature that directly supports multicast within the VPC.
- ✓
AWS Transit Gateway with multicast domain
Why this is correct
AWS Transit Gateway multicast domains provide native support for multicast traffic within a VPC, allowing service discovery traffic to be forwarded between VPCs or on-premises networks.
Related concept
Multicast in AWS
- ✗
VPC multicast groups using network interfaces
Why it's wrong here
VPC multicast groups are not natively supported in AWS. Multicast within a VPC must be enabled through Transit Gateway multicast domains, not through direct VPC network interfaces.
- ✗
Internet Gateway (IGW)
Why it's wrong here
Internet Gateway (IGW) only supports unicast traffic and cannot handle multicast.
- ✗
VPC Peering
Why it's wrong here
VPC Peering only supports unicast traffic and does not support multicast.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates often assume that Direct Connect or VPC Peering can support multicast because they handle general IP traffic, but AWS restricts multicast to Transit Gateway multicast domains only.
Detailed technical explanation
How to think about this question
AWS VPC natively does not support multicast, but you can enable it using Transit Gateway multicast domains or VPC multicast groups (via AWS Resource Access Manager). For Direct Connect, multicast requires the on-premises router to run a multicast routing protocol (e.g., PIM-SM) and the Direct Connect VIF to be configured with the appropriate multicast VLAN, while the VPC side must have a multicast-enabled Transit Gateway or VPC multicast group to receive and forward the traffic.
KKey Concepts to Remember
- Multicast in AWS
- VPC Peering limitations
- Internet Gateway limitations
- Direct Connect and multicast
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Multicast in AWS
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Review multicast in AWS, then practise related ANS-C01 questions on the same topic to reinforce the concept.
- →
Network Design — study guide chapter
Learn the concepts, then practise the questions
- →
Network Design practice questions
Targeted practice on this topic area only
- →
All ANS-C01 questions
1,705 questions across all exam domains
- →
AWS Certified Advanced Networking Specialty ANS-C01 study guide
Full concept coverage aligned to exam objectives
- →
ANS-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related ANS-C01 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Network Management and Operations practice questions
Practise ANS-C01 questions linked to Network Management and Operations.
Network Security, Compliance and Governance practice questions
Practise ANS-C01 questions linked to Network Security, Compliance and Governance.
Network Design practice questions
Practise ANS-C01 questions linked to Network Design.
Network Implementation practice questions
Practise ANS-C01 questions linked to Network Implementation.
ANS-C01 fundamentals practice questions
Practise ANS-C01 questions linked to ANS-C01 fundamentals.
ANS-C01 scenario practice questions
Practise ANS-C01 questions linked to ANS-C01 scenario.
ANS-C01 troubleshooting practice questions
Practise ANS-C01 questions linked to ANS-C01 troubleshooting.
Practice this exam
Start a free ANS-C01 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Design — This question tests Network Design — Multicast in AWS.
What is the correct answer to this question?
The correct answer is: AWS Transit Gateway with multicast domain — The question asks for three options, but only AWS Transit Gateway multicast domains (option B) natively support multicast traffic within a VPC. The other listed options do not support multicast: Direct Connect requires additional on-premises configuration and does not provide VPC-native multicast, VPC multicast groups are not a supported feature, Internet Gateway only handles unicast, and VPC Peering also only supports unicast. Therefore, only one correct answer is available among the choices.
What should I do if I get this ANS-C01 question wrong?
Review multicast in AWS, then practise related ANS-C01 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Multicast in AWS
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More ANS-C01 practice questions
- A financial services company has a VPC with a public subnet and a private subnet. EC2 instances in the private subnet ne…
- A company is designing a network security architecture for a multi-account environment using AWS Transit Gateway. The se…
- A company is using AWS Direct Connect to connect its on-premises network to AWS. The company wants to encrypt all traffi…
- A company uses AWS Transit Gateway to connect multiple VPCs and on-premises networks via AWS Site-to-Site VPN. The secur…
- A company runs a web application on EC2 instances behind an Application Load Balancer (ALB). The application must be acc…
- A global e-commerce company uses a hub-and-spoke network topology with a transit VPC in us-east-1. Each spoke VPC has an…
Last reviewed: Jul 4, 2026
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.