This PAS-C01 practice question tests your understanding of operations and maintenance. 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 HANA database on AWS is experiencing high latency. The operations team suspects a network bottleneck. The SAP application and HANA are on different subnets within the same VPC. Which AWS feature can help reduce latency?
NAT Gateway
Why wrong: NAT Gateway is for outbound internet, adds latency.
Elastic Network Adapter (ENA)
ENA provides enhanced networking performance.
VPC Peering
Why wrong: VPC Peering connects different VPCs; within same VPC, not needed.
Internet Gateway
Why wrong: Internet Gateway is for internet connectivity.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Elastic Network Adapter (ENA)
Option B is correct. ENA provides higher bandwidth and lower latency. Option A is incorrect because VPC Peering does not improve latency within same VPC. Option C is incorrect because NAT Gateway adds latency. Option D is incorrect because Internet Gateway is for internet access.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
NAT Gateway
Elastic Network Adapter (ENA)
Why this is correct
ENA provides enhanced networking performance.
Related concept
CIDR notation defines the prefix length.
VPC Peering
Why it's wrong here
VPC Peering connects different VPCs; within same VPC, not needed.
Internet Gateway
Why it's wrong here
Internet Gateway is for internet connectivity.
Common exam traps
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PAS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Operations and Maintenance — This question tests Operations and Maintenance — CIDR notation defines the prefix length..
The correct answer is: Elastic Network Adapter (ENA) — Option B is correct. ENA provides higher bandwidth and lower latency. Option A is incorrect because VPC Peering does not improve latency within same VPC. Option C is incorrect because NAT Gateway adds latency. Option D is incorrect because Internet Gateway is for internet access.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PAS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
CIDR notation defines the prefix length.
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Last reviewed: Jun 20, 2026
This PAS-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 PAS-C01 exam.
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