- A
Increase the EC2 instance size to a larger type with more CPU and memory.
Larger instance type directly improves compute performance, reducing application latency.
- B
Move the instance to a public subnet and assign a public IP address.
Why wrong: Moving to public subnet does not inherently improve performance and introduces security risks.
- C
Replace the NAT Gateway with an Internet Gateway.
Why wrong: Internet Gateway is for public subnets; private subnet still needs NAT for outbound. This does not reduce latency for inbound SAP traffic.
- D
Enable EBS optimization on the instance.
Why wrong: EBS optimization improves disk throughput but not network latency for SAP application.
Question 73 of 1,733
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. 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.
An SAP application running on an EC2 instance is experiencing high latency during peak hours. The instance is in a private subnet with a NAT Gateway for outbound internet. Which action would most effectively reduce latency for SAP users?
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
✓
Increase the EC2 instance size to a larger type with more CPU and memory.
Increasing the EC2 instance size to a larger type with more CPU and memory directly addresses the root cause of high latency during peak hours for an SAP application: resource contention. SAP is compute and memory-intensive; when the instance's vCPUs and RAM are saturated, request queuing and processing delays occur. A larger instance type provides more dedicated resources, reducing processing time per transaction and thus lowering latency for users.
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.
- ✓
Increase the EC2 instance size to a larger type with more CPU and memory.
Why this is correct
Larger instance type directly improves compute performance, reducing application latency.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Move the instance to a public subnet and assign a public IP address.
Why it's wrong here
Moving to public subnet does not inherently improve performance and introduces security risks.
- ✗
Replace the NAT Gateway with an Internet Gateway.
- ✗
Enable EBS optimization on the instance.
Why it's wrong here
EBS optimization improves disk throughput but not network latency for SAP application.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse network latency (which NAT Gateway or subnet changes might affect) with application latency caused by resource exhaustion, leading them to incorrectly choose network-related fixes instead of scaling the instance.
Detailed technical explanation
How to think about this question
Under the hood, SAP applications rely heavily on CPU caches and memory bandwidth; when an EC2 instance runs out of available vCPU cycles, the Linux kernel's Completely Fair Scheduler (CFS) queues processes, increasing context-switching overhead and response times. A larger instance type, such as moving from a general-purpose (e.g., m5.large) to a compute-optimized (e.g., c5.4xlarge) or memory-optimized (e.g., r5.4xlarge) family, provides more vCPUs and memory, directly reducing queue depth. In real-world SAP deployments on AWS, right-sizing instances based on SAPS (SAP Application Performance Standard) benchmarks is a standard practice to avoid latency during peak loads.
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.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Increase the EC2 instance size to a larger type with more CPU and memory. — Increasing the EC2 instance size to a larger type with more CPU and memory directly addresses the root cause of high latency during peak hours for an SAP application: resource contention. SAP is compute and memory-intensive; when the instance's vCPUs and RAM are saturated, request queuing and processing delays occur. A larger instance type provides more dedicated resources, reducing processing time per transaction and thus lowering latency for users.
What should I do if I get this PAS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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