- A
Use a smaller instance type with higher CPU to memory ratio
Why wrong: Smaller instance would have less memory, causing issues.
- B
Enable HANA Large Pages to reduce TLB misses and improve memory access
Large pages improve memory access efficiency.
- C
Increase the swap space on the instance store volumes
Why wrong: Swap increases latency.
- D
Disable HANA compression to reduce CPU overhead
Why wrong: Compression reduces memory usage; disabling it increases memory pressure.
Question 40 of 1,733
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 migrates its SAP HANA database to an EC2 instance with 1 TB of memory. The system is used for both OLTP and OLAP workloads. The performance team notices that memory utilization is high but the CPU is underutilized. Which configuration change would best improve overall system throughput?
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
✓
Enable HANA Large Pages to reduce TLB misses and improve memory access
HANA Large Pages (also known as huge pages) reduce the number of Translation Lookaside Buffer (TLB) misses by mapping large contiguous memory regions with fewer page table entries. In a 1 TB memory system, the default 4 KB page size causes excessive TLB pressure, especially under OLAP workloads with large data scans. Enabling large pages improves memory access efficiency, allowing the CPU to spend less time on page walks and more time on actual processing, thereby improving overall throughput without requiring a hardware change.
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 a smaller instance type with higher CPU to memory ratio
Why it's wrong here
Smaller instance would have less memory, causing issues.
- ✓
Enable HANA Large Pages to reduce TLB misses and improve memory access
Why this is correct
Large pages improve memory access efficiency.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Increase the swap space on the instance store volumes
Why it's wrong here
Swap increases latency.
- ✗
Disable HANA compression to reduce CPU overhead
Why it's wrong here
Compression reduces memory usage; disabling it increases memory pressure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume high memory utilization means the instance is undersized and needs a different instance type, but the real bottleneck is inefficient memory access due to small page sizes, not a lack of memory capacity.
Detailed technical explanation
How to think about this question
SAP HANA relies on columnar storage and in-memory data processing; large pages (e.g., 2 MB or 1 GB) reduce the number of page table entries required to map the entire memory space, which lowers TLB miss rates and improves cache locality. On AWS EC2 instances with high memory, such as the u-6tb1 or x1e families, enabling transparent huge pages (THP) or configuring HANA-specific huge pages can yield a 10-20% performance gain in scan-heavy OLAP queries. A subtle behavior is that THP can cause memory fragmentation over time, so SAP recommends using static huge pages via the `hugepages` kernel parameter for production workloads.
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
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
Got this wrong? Here's your next step.
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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: Enable HANA Large Pages to reduce TLB misses and improve memory access — HANA Large Pages (also known as huge pages) reduce the number of Translation Lookaside Buffer (TLB) misses by mapping large contiguous memory regions with fewer page table entries. In a 1 TB memory system, the default 4 KB page size causes excessive TLB pressure, especially under OLAP workloads with large data scans. Enabling large pages improves memory access efficiency, allowing the CPU to spend less time on page walks and more time on actual processing, thereby improving overall throughput without requiring a hardware change.
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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