- A
Network ACLs
Why wrong: NACLs are for subnets.
- B
IAM role
Why wrong: IAM roles are not used for EFS mount access.
- C
Security group
EFS uses security groups to allow inbound NFS traffic.
- D
S3 bucket policy
Why wrong: S3 bucket policies are for S3 objects.
Question 1,233 of 1,733
PAS-C01 Design of SAP Workloads on AWS Practice Question
This PAS-C01 practice question tests your understanding of design of sap workloads on aws. 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.
A customer is running SAP NetWeaver on AWS and wants to use Amazon EFS for shared file storage for the SAP transport directory. Which access option should be used to secure the file system?
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
✓
Security group
Amazon EFS uses security groups as a stateful firewall to control NFS traffic (port 2049) at the network level. For SAP transport directories, security groups allow you to restrict access to specific EC2 instances or other AWS resources that need to mount the EFS file system, providing granular network-layer security without managing individual IP addresses.
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.
- ✗
Network ACLs
Why it's wrong here
NACLs are for subnets.
- ✗
IAM role
Why it's wrong here
IAM roles are not used for EFS mount access.
- ✓
Security group
Why this is correct
EFS uses security groups to allow inbound NFS traffic.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
S3 bucket policy
Why it's wrong here
S3 bucket policies are for S3 objects.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse network-level access controls (security groups) with identity-based controls (IAM roles) or assume that EFS, being a shared file system, can be secured with policies similar to S3 bucket policies.
Detailed technical explanation
How to think about this question
EFS security groups work by allowing inbound NFS traffic (TCP port 2049) from the security group of the EC2 instance or the source CIDR block. Under the hood, EFS uses NFSv4.1 with Kerberos authentication optionally, but security groups remain the primary mechanism for network access control. In a real-world SAP deployment, you might attach the same security group to both the EFS mount target and the SAP application servers to ensure only those instances can mount the transport directory.
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
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Security group — Amazon EFS uses security groups as a stateful firewall to control NFS traffic (port 2049) at the network level. For SAP transport directories, security groups allow you to restrict access to specific EC2 instances or other AWS resources that need to mount the EFS file system, providing granular network-layer security without managing individual IP addresses.
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: Jun 24, 2026
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.
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