- A
Use AWS License Manager to add more memory to the instance.
Why wrong: License Manager manages software licenses, not memory allocation.
- B
Modify the instance type to r5.12xlarge while the instance is running.
EC2 instances with ENA support can change instance type without stopping if the new type is in the same family.
- C
Use Amazon RDS for SAP HANA to automatically scale memory.
Why wrong: RDS for SAP HANA is not a service; SAP HANA on RDS is not supported.
- D
Stop the instance and change the instance type to u-6tb1.112xlarge.
Why wrong: Stopping the instance causes downtime, which is not allowed.
Question 579 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 is running an SAP HANA database on an r5.8xlarge EC2 instance. The database experiences high memory pressure, and they want to add more memory without downtime. What should they do?
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
✓
Modify the instance type to r5.12xlarge while the instance is running.
Option B is correct because you can modify the instance type of a running EC2 instance without stopping it, provided the new type is compatible with the current configuration. In this case, changing from r5.8xlarge to r5.12xlarge increases memory from 256 GiB to 384 GiB, and both are in the same instance family, supporting live resizing. This allows the SAP HANA database to add memory without downtime, addressing high memory pressure.
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 AWS License Manager to add more memory to the instance.
Why it's wrong here
License Manager manages software licenses, not memory allocation.
- ✓
Modify the instance type to r5.12xlarge while the instance is running.
Why this is correct
EC2 instances with ENA support can change instance type without stopping if the new type is in the same family.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Amazon RDS for SAP HANA to automatically scale memory.
Why it's wrong here
RDS for SAP HANA is not a service; SAP HANA on RDS is not supported.
- ✗
Stop the instance and change the instance type to u-6tb1.112xlarge.
Why it's wrong here
Stopping the instance causes downtime, which is not allowed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think stopping the instance is always required for instance type changes, but AWS supports live resizing for certain instance families like r5, and they might incorrectly choose Option D due to familiarity with the u-6tb1.112xlarge instance type for SAP HANA, ignoring the downtime constraint.
Detailed technical explanation
How to think about this question
EC2 instance type modification for memory increase works only within the same instance family (e.g., r5 to r5) and requires that the instance is EBS-backed and not using instance store volumes for the root device. The modification triggers a reboot if the instance is running, but for r5 series, the change can be applied without a full stop, leveraging the Nitro system's ability to hot-attach resources. In real-world scenarios, SAP HANA memory pressure often requires scaling to larger instance types like r5.12xlarge (384 GiB) or r5.24xlarge (768 GiB), but you must ensure the new type supports the same network and EBS bandwidth to avoid performance bottlenecks.
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.
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: Modify the instance type to r5.12xlarge while the instance is running. — Option B is correct because you can modify the instance type of a running EC2 instance without stopping it, provided the new type is compatible with the current configuration. In this case, changing from r5.8xlarge to r5.12xlarge increases memory from 256 GiB to 384 GiB, and both are in the same instance family, supporting live resizing. This allows the SAP HANA database to add memory without downtime, addressing high memory pressure.
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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