- A
Amazon Elastic Block Store (Amazon EBS) with a multi-attach enabled volume.
Why wrong: EBS multi-attach is limited to a few instances and not ideal for shared file systems.
- B
Amazon Elastic File System (Amazon EFS).
EFS provides a scalable, shared NFS file system for Linux instances.
- C
Amazon Simple Storage Service (Amazon S3).
Why wrong: S3 is object storage, not a file system, and does not provide POSIX permissions.
- D
Amazon FSx for Windows File Server.
Why wrong: Bobj typically runs on Linux, so FSx for Windows is not the best fit.
Question 981 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 planning to run SAP BusinessObjects (BOBJ) on AWS. The application servers require consistent low-latency access to a shared file system for storing reports and configuration files. Which AWS storage solution is BEST suited for this requirement?
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
✓
Amazon Elastic File System (Amazon EFS).
Amazon EFS provides a fully managed, scalable, and shared file system that can be accessed concurrently by multiple EC2 instances via the NFSv4.1 protocol. For SAP BusinessObjects application servers requiring consistent low-latency access to shared reports and configuration files, EFS delivers the necessary POSIX permissions, strong consistency, and automatic scaling without provisioning overhead, making it the ideal choice.
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.
- ✗
Amazon Elastic Block Store (Amazon EBS) with a multi-attach enabled volume.
Why it's wrong here
EBS multi-attach is limited to a few instances and not ideal for shared file systems.
- ✓
Amazon Elastic File System (Amazon EFS).
Why this is correct
EFS provides a scalable, shared NFS file system for Linux instances.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon Simple Storage Service (Amazon S3).
Why it's wrong here
S3 is object storage, not a file system, and does not provide POSIX permissions.
- ✗
Amazon FSx for Windows File Server.
Why it's wrong here
Bobj typically runs on Linux, so FSx for Windows is not the best fit.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Amazon EBS Multi-Attach with a true shared file system, not realizing that EBS Multi-Attach is limited to a single Availability Zone and does not support concurrent writes from multiple instances, whereas EFS is designed for exactly that use case with full NFS semantics.
Detailed technical explanation
How to think about this question
Amazon EFS leverages the NFSv4.1 protocol with support for file locking and strong read-after-write consistency across multiple Availability Zones. Under the hood, EFS uses a distributed data plane that automatically scales throughput and IOPS based on the amount of data stored, and it can deliver sub-millisecond latencies for frequently accessed files when using the EFS Max I/O performance mode or the new EFS Elastic throughput mode. In a real-world SAP BOBJ deployment, EFS allows multiple application servers to concurrently write reports and read configuration files without manual capacity planning, and it integrates with AWS Backup for automated snapshots.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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: Amazon Elastic File System (Amazon EFS). — Amazon EFS provides a fully managed, scalable, and shared file system that can be accessed concurrently by multiple EC2 instances via the NFSv4.1 protocol. For SAP BusinessObjects application servers requiring consistent low-latency access to shared reports and configuration files, EFS delivers the necessary POSIX permissions, strong consistency, and automatic scaling without provisioning overhead, making it the ideal choice.
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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