- A
The EFS file system has insufficient throughput for the number of concurrent mounts.
Why wrong: Incorrect. EFS access points define file system paths and permissions but do not impact file locking behavior.
- B
The security group for the EFS mount targets does not allow inbound traffic on port 2049.
Why wrong: Incorrect. Security group rules blocking port 2049 would prevent NFS mounts or cause general connectivity failures, not specifically locking errors.
- C
The EFS file system is using access points that restrict permissions.
Why wrong: Incorrect. Insufficient throughput would cause performance issues or timeouts, not file locking errors.
- D
The EFS file system is mounted using NFS version 3, which has limited locking support.
Correct. Default NFS client options often use NFSv3, which has limited locking support. EFS recommends NFSv4.1 for proper file locking, and using NFSv3 can lead to locking failures observed by the operations team.
PAS-C01 NFSv3 vs NFSv4.1 locking Practice Question
This PAS-C01 practice question tests your understanding of operations and maintenance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: nFSv3 vs NFSv4.1 locking. 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.
An SAP system on AWS uses a shared file system for the SAP transport directory. The file system is hosted on an Amazon EFS file system. Recently, the operations team noticed that SAP transports are failing with errors indicating file locking issues. The EFS file system is mounted using the NFS client with default options. What is the most likely cause of the file locking issues?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
The EFS file system is mounted using NFS version 3, which has limited locking support.
Option D is correct because the default NFS client options typically use NFSv3, which has limited file locking support. SAP transport processes rely on robust file locking to coordinate access to the shared transport directory. NFSv4.1, which EFS recommends, provides proper locking with NFSv4.1 state management and lease-based locking. Option A is incorrect because EFS access points do not affect locking; they manage file system paths and permissions. Option B is incorrect because a security group blocking inbound traffic on port 2049 (NFS) would cause mount failures or accessibility issues, not specifically locking errors. Option C is incorrect because throughput constraints would manifest as performance degradation or timeouts, not file locking failures.
Key principle: NFSv3 vs NFSv4.1 locking
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The EFS file system has insufficient throughput for the number of concurrent mounts.
Why it's wrong here
Incorrect. EFS access points define file system paths and permissions but do not impact file locking behavior.
- ✗
The security group for the EFS mount targets does not allow inbound traffic on port 2049.
Why it's wrong here
Incorrect. Security group rules blocking port 2049 would prevent NFS mounts or cause general connectivity failures, not specifically locking errors.
- ✗
The EFS file system is using access points that restrict permissions.
Why it's wrong here
Incorrect. Insufficient throughput would cause performance issues or timeouts, not file locking errors.
- ✓
The EFS file system is mounted using NFS version 3, which has limited locking support.
Why this is correct
Correct. Default NFS client options often use NFSv3, which has limited locking support. EFS recommends NFSv4.1 for proper file locking, and using NFSv3 can lead to locking failures observed by the operations team.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
NFSv3 vs NFSv4.1 locking
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
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- NFSv3 vs NFSv4.1 locking
- Amazon EFS
- SAP transport directory
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
NFSv3 vs NFSv4.1 locking
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.
Review nFSv3 vs NFSv4.1 locking, then practise related PAS-C01 questions on the same topic to reinforce the concept.
- →
Operations and Maintenance — study guide chapter
Learn the concepts, then practise the questions
- →
Operations and Maintenance practice questions
Targeted practice on this topic area only
- →
All PAS-C01 questions
1,733 questions across all exam domains
- →
AWS Certified SAP on AWS Specialty PAS-C01 study guide
Full concept coverage aligned to exam objectives
- →
PAS-C01 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PAS-C01 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design of SAP Workloads on AWS practice questions
Practise PAS-C01 questions linked to Design of SAP Workloads on AWS.
Technology practice questions
Practise PAS-C01 questions linked to Technology.
Migration practice questions
Practise PAS-C01 questions linked to Migration.
Operations and Maintenance practice questions
Practise PAS-C01 questions linked to Operations and Maintenance.
PAS-C01 fundamentals practice questions
Practise PAS-C01 questions linked to PAS-C01 fundamentals.
PAS-C01 scenario practice questions
Practise PAS-C01 questions linked to PAS-C01 scenario.
PAS-C01 troubleshooting practice questions
Practise PAS-C01 questions linked to PAS-C01 troubleshooting.
Practice this exam
Start a free PAS-C01 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this PAS-C01 question test?
Operations and Maintenance — This question tests Operations and Maintenance — NFSv3 vs NFSv4.1 locking.
What is the correct answer to this question?
The correct answer is: The EFS file system is mounted using NFS version 3, which has limited locking support. — Option D is correct because the default NFS client options typically use NFSv3, which has limited file locking support. SAP transport processes rely on robust file locking to coordinate access to the shared transport directory. NFSv4.1, which EFS recommends, provides proper locking with NFSv4.1 state management and lease-based locking. Option A is incorrect because EFS access points do not affect locking; they manage file system paths and permissions. Option B is incorrect because a security group blocking inbound traffic on port 2049 (NFS) would cause mount failures or accessibility issues, not specifically locking errors. Option C is incorrect because throughput constraints would manifest as performance degradation or timeouts, not file locking failures.
What should I do if I get this PAS-C01 question wrong?
Review nFSv3 vs NFSv4.1 locking, then practise related PAS-C01 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
NFSv3 vs NFSv4.1 locking
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Keep practising
More PAS-C01 practice questions
- A company runs SAP S/4HANA on AWS. The environment includes an SAP HANA database on an EC2 instance with multiple EBS vo…
- A company runs SAP S/4HANA on AWS with a High Availability (HA) cluster spanning two Availability Zones (us-east-1a and…
- A company is planning to migrate its SAP landscape to AWS. The landscape includes development, quality assurance, and pr…
- A company is using AWS Systems Manager Patch Manager to patch a fleet of EC2 instances. The instances are in a patch gro…
- A company is migrating a legacy on-premises application to AWS. The application uses a MySQL database with a complex sto…
- A company is migrating a large SAP ERP system to AWS using SAP HANA. They want to minimize downtime and ensure consisten…
Last reviewed: Jun 20, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.