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Cost-Effective Instance Selection for SAP HANA

This PAS-C01 practice question tests your understanding of technology. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 deploying a new SAP S/4HANA system on AWS. The system will be used by 500 concurrent users. The SAP application server and the HANA database will run on separate EC2 instances. The company needs to ensure that the database instance has enough memory for the HANA database, which requires 512 GB of RAM. The application server requires 32 vCPUs and 128 GB of RAM. The company wants to minimize costs while meeting these requirements. Which combination of EC2 instance types should the company choose?

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 an r5.24xlarge for the database and an r5.8xlarge for the application server.

Option D is correct because the HANA database requires 512 GB of RAM. The r5.24xlarge provides 768 GB of RAM and 96 vCPUs, which is sufficient and cost-effective for the database. The r5.8xlarge provides 32 vCPUs and 256 GB of RAM, meeting the application server's requirements of 32 vCPUs and 128 GB. Option A uses an r5.12xlarge (384 GB RAM) for the database, which is insufficient for 512 GB. Option B uses an x1e.8xlarge (244 GB RAM) for the database, also insufficient. Option C uses an x1e.32xlarge (976 GB RAM) for the database, which is overkill and more expensive, and the m5.8xlarge (32 vCPUs, 128 GB RAM) for the application is adequate but the database choice increases cost unnecessarily. Therefore, D minimizes cost while meeting requirements.

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 an r5.12xlarge for the database and an m5.4xlarge for the application server.

    Why it's wrong here

    r5.12xlarge has 384 GB, insufficient.

  • ✗

    Use an x1e.8xlarge for the database and an r5.8xlarge for the application server.

    Why it's wrong here

    x1e.8xlarge has only 244 GB, insufficient.

  • ✗

    Use an x1e.32xlarge for the database and an m5.8xlarge for the application server.

    Why it's wrong here

    x1e.32xlarge is expensive and overkill for 512 GB.

  • ✓

    Use an r5.24xlarge for the database and an r5.8xlarge for the application server.

    Why this is correct

    r5.24xlarge has 768 GB, sufficient; r5.8xlarge has 32 vCPU and 256 GB, sufficient.

    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.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
  • Use explanations to understand the rule behind the answer.

TExam Day Tips

  • Underline the problem statement mentally.
  • 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

A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.

What to study next

Got this wrong? Here's your next step.

Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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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: Use an r5.24xlarge for the database and an r5.8xlarge for the application server. — Option D is correct because the HANA database requires 512 GB of RAM. The r5.24xlarge provides 768 GB of RAM and 96 vCPUs, which is sufficient and cost-effective for the database. The r5.8xlarge provides 32 vCPUs and 256 GB of RAM, meeting the application server's requirements of 32 vCPUs and 128 GB. Option A uses an r5.12xlarge (384 GB RAM) for the database, which is insufficient for 512 GB. Option B uses an x1e.8xlarge (244 GB RAM) for the database, also insufficient. Option C uses an x1e.32xlarge (976 GB RAM) for the database, which is overkill and more expensive, and the m5.8xlarge (32 vCPUs, 128 GB RAM) for the application is adequate but the database choice increases cost unnecessarily. Therefore, D minimizes cost while meeting requirements.

What should I do if I get this PAS-C01 question wrong?

Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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.

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Last reviewed: Jun 20, 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.