- A
Use AWS Global Accelerator to provide a static anycast IP address and route traffic to the NLB endpoints
Global Accelerator reduces latency by using the AWS global network.
- B
Use a Network Load Balancer (NLB) with a UDP listener in front of the collector instances
NLB supports UDP and provides low latency.
- C
Use an Application Load Balancer (ALB) with a TCP listener and configure the collector to receive TCP
Why wrong: ALB does not support UDP.
- D
Use AWS Global Accelerator with EC2 instances as endpoints directly
Why wrong: Global Accelerator endpoints must be Application Load Balancers, Network Load Balancers, or Elastic IP addresses.
- E
Deploy an internet-facing NLB with Elastic IP addresses in each Availability Zone
Why wrong: This provides static IPs but does not minimize latency as Global Accelerator does.
Quick Answer
The correct answer is to use a Network Load Balancer (NLB) with a UDP listener in front of the collector instances and pair it with AWS Global Accelerator. This combination works because the NLB is designed to handle UDP traffic at massive scale without inspecting or terminating the protocol, while Global Accelerator provides static anycast IP addresses that route traffic over the AWS global backbone instead of the public internet, directly reducing latency and jitter for real-time data ingestion. On the ANS-C01 exam, this scenario tests your understanding of how to optimize non-TCP workloads for performance and availability, often appearing in questions about IoT or media streaming where packet loss and variable delay are unacceptable. A common trap is choosing Application Load Balancer or CloudFront, but neither supports UDP listeners. Memory tip: think “UDP needs NLB, and Global Accelerator gives it the fast lane.”
ANS-C01 Network Design Practice Question
This ANS-C01 practice question tests your understanding of network design. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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 designing a network for a real-time data analytics platform that ingests data from thousands of IoT devices. The devices send data via UDP to a UDP-based collector service running on EC2 instances. The collector service must be highly available and scalable. The data is then processed by a stream processing application. The company wants to minimize latency and jitter. Which TWO architectural choices should they make?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Use AWS Global Accelerator to provide a static anycast IP address and route traffic to the NLB endpoints
Option A is correct because AWS Global Accelerator provides static anycast IP addresses that route traffic over the AWS global network to the optimal NLB endpoint, reducing latency and jitter by avoiding public internet hops and using the AWS backbone. This is ideal for UDP-based real-time analytics where consistent performance is critical.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use AWS Global Accelerator to provide a static anycast IP address and route traffic to the NLB endpoints
Why this is correct
Global Accelerator reduces latency by using the AWS global network.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Use a Network Load Balancer (NLB) with a UDP listener in front of the collector instances
Why this is correct
NLB supports UDP and provides low latency.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use an Application Load Balancer (ALB) with a TCP listener and configure the collector to receive TCP
Why it's wrong here
ALB does not support UDP.
- ✗
Use AWS Global Accelerator with EC2 instances as endpoints directly
Why it's wrong here
Global Accelerator endpoints must be Application Load Balancers, Network Load Balancers, or Elastic IP addresses.
- ✗
Deploy an internet-facing NLB with Elastic IP addresses in each Availability Zone
Why it's wrong here
This provides static IPs but does not minimize latency as Global Accelerator does.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the misconception that Global Accelerator can directly use EC2 instances as endpoints, but it actually requires an NLB, ALB, or Elastic IP as the endpoint target.
Detailed technical explanation
How to think about this question
Global Accelerator uses Anycast IPs from the AWS edge locations, which route traffic to the nearest healthy endpoint via the AWS global network, bypassing internet congestion. The NLB with a UDP listener preserves the original UDP datagrams without termination, ensuring low-latency, connectionless forwarding to EC2 collector instances. In real-world scenarios, this combination reduces tail latency for IoT data streams by 30-60% compared to internet-facing NLBs alone.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this ANS-C01 question test?
Network Design — This question tests Network Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Global Accelerator to provide a static anycast IP address and route traffic to the NLB endpoints — Option A is correct because AWS Global Accelerator provides static anycast IP addresses that route traffic over the AWS global network to the optimal NLB endpoint, reducing latency and jitter by avoiding public internet hops and using the AWS backbone. This is ideal for UDP-based real-time analytics where consistent performance is critical.
What should I do if I get this ANS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 30, 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.
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