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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 system on AWS is experiencing high latency between the application server and the database server. Both are in the same VPC but different subnets. What is the most effective way to reduce latency?

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

Place both instances in a placement group in the same Availability Zone.

Placing both the SAP application server and database server in a placement group within the same Availability Zone ensures they are in close physical proximity, often on the same rack or within the same cluster. This minimizes network hops and reduces latency to single-digit microseconds, which is critical for SAP's high-throughput, low-latency communication between application and database layers.

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.

  • Move the database to a different Availability Zone.

    Why it's wrong here

    Different AZ increases latency.

  • Use a VPN connection between subnets.

    Why it's wrong here

    VPN adds latency.

  • Increase the instance size of both servers.

    Why it's wrong here

    Does not directly reduce network latency.

  • Place both instances in a placement group in the same Availability Zone.

    Why this is correct

    Placement groups provide low-latency network.

    Related concept

    Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume increasing instance size or changing subnets will fix latency, but AWS explicitly tests the understanding that physical proximity via placement groups is the only way to guarantee minimal network latency within a single Availability Zone.

Detailed technical explanation

How to think about this question

A placement group in AWS uses a low-latency, high-bandwidth network fabric that can achieve sub-millisecond latency (often 0.1–0.3 ms) between instances, compared to typical intra-AZ latency of 0.5–1 ms. For SAP workloads, which rely on synchronous database calls (e.g., SAP HANA or Oracle RAC), even a 1 ms increase can degrade transaction throughput by 10–20%. Placement groups also support enhanced networking (SR-IOV) and jumbo frames (MTU 9001) for further optimization.

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

192.168.1.0 /24 256 addresses (254 usable) 192.168.1.0 /25 Subnet A 128 addr (126 usable) 192.168.1.128 /25 Subnet B 128 addr (126 usable) Borrowing 1 bit from host portion creates 2 subnets (/25)

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 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: Place both instances in a placement group in the same Availability Zone. — Placing both the SAP application server and database server in a placement group within the same Availability Zone ensures they are in close physical proximity, often on the same rack or within the same cluster. This minimizes network hops and reduces latency to single-digit microseconds, which is critical for SAP's high-throughput, low-latency communication between application and database layers.

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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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.