The answer is to create an EBS volume from the snapshot, attach it to the EC2 instance, and mount the file system. This is correct because EBS snapshots are point-in-time backups stored in Amazon S3, but they are not directly accessible as a volume; you must first restore them into a new EBS volume in the same Availability Zone as the target instance, then attach and mount it to make the SAP data available. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of the recovery workflow for SAP systems using EBS snapshots, a common scenario in disaster recovery. A frequent trap is assuming you need to terminate the existing instance first—you do not, as you can attach the restored volume to the same or a different running instance. Another trap is thinking you must mount an S3 bucket, but S3 is only the storage backend for the snapshot, not a mountable filesystem. Memory tip: think "Create, Attach, Mount"—the three essential steps to bring your SAP system back online from an EBS snapshot.
PAS-C01 Operations and Maintenance Practice Question
This PAS-C01 practice question tests your understanding of operations and maintenance. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which THREE steps should be taken when recovering an SAP system from an EBS snapshot? (Choose 3.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Attach the new volume to the EC2 instance
Option A, B, and D are correct. Option C is wrong because you don't need to terminate before restoring. Option E is wrong as S3 doesn't need to be mounted.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Attach the new volume to the EC2 instance
Why this is correct
Attach to the original or replacement instance.
Related concept
Static NAT maps one inside address to one outside address.
✗
Terminate the existing EC2 instance
Why it's wrong here
Unnecessary; can attach to existing instance.
✓
Mount the volume on the appropriate mount point
Why this is correct
Make the data accessible to the OS and SAP.
Related concept
Static NAT maps one inside address to one outside address.
✗
Reconfigure the S3 bucket for backup storage
Why it's wrong here
Not relevant to recovering from an EBS snapshot.
✓
Create an EBS volume from the snapshot
Why this is correct
First step to restore data.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
Operations and Maintenance — This question tests Operations and Maintenance — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Attach the new volume to the EC2 instance — Option A, B, and D are correct. Option C is wrong because you don't need to terminate before restoring. Option E is wrong as S3 doesn't need to be mounted.
What should I do if I get this PAS-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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