ANS-C01 Network Design Practice Question
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?
⚠ Common exam trap
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.
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
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.
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.
- ✓
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.
- ✗
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.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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