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AWS SCS-C03 Exam Practice Questions, practice question pack
AWS · SCS-C03

AWS SCS-C03 Exam Practice Questions

99% pass rateUpdated 1 Nov 2026143 questions2 PDFs, instant download
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(7 customer reviews)

US$39

Every question with the correct answer and why the other options are wrong.

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Three of the 143 questions in this pack

Question 1

A company needs a solution to protect critical data from being permanently deleted. The data is stored in Amazon S3 buckets.

The company needs to replicate the S3 objects from the company's primary AWS Region to a secondary Region to meet disaster recovery requirements. The company must also ensure that users who have administrator access cannot permanently delete the data in the secondary Region.

Which solution will meet these requirements?

  1. Configure AWS Backup to perform cross-Region S3 backups. Select a backup vault in the secondary Region. Enable AWS Backup Vault Lock in governance mode for the backups in the secondary Region.
  2. Implement S3 Object Lock in compliance mode in the primary Region. Configure S3 replication to replicate the objects to an S3 bucket in the secondary Region.
  3. Configure S3 replication to replicate the objects to an S3 bucket in the secondary Region. Create an S3 bucket policy to deny the s3:ReplicateDelete action on the S3 bucket in the secondary Region.
  4. Configure S3 replication to replicate the objects to an S3 bucket in the secondary Region. Configure S3 object versioning on the S3 bucket in the secondary Region.
Show answer and explanation

Correct answer: B. Implement S3 Object Lock in compliance mode in the primary Region. Configure S3 replication to replicate the objects to an S3 bucket in the secondary Region.

S3 Object Lock in compliance mode is the definitive solution for preventing permanent deletion, even by administrators. When replicated to the secondary Region, the Object Lock settings are preserved, ensuring administrators cannot delete objects in either Region. This meets both the disaster recovery requirement (replication) and the immutability requirement (Object Lock compliance mode prevents all deletions until retention period expires).

Why the other options are wrong

  • A. AWS Backup Vault Lock governance mode allows privileged users to modify or delete the vault lock settings, so administrators could still delete backups.
  • C. A bucket policy denying s3:ReplicateDelete does not prevent direct object deletion; administrators can still use s3:DeleteObject regardless of the policy.
  • D. Versioning alone allows deletion of current versions and doesn't prevent administrators from permanently removing all versions through delete markers.

Question 2

A security engineer is responding to an incident that is affecting an AWS account. The ID of the account is 1234156789012. The attack created workloads that are distributed across multiple AWS Regions.

The security engineer contains the attack. The security engineer removes all compute and storage resources from all affected Regions. However, the attacker also created an AWS KMS key. The key policy on the KMS key explicitly allows IAM principal kms:* permissions.

The key was scheduled to be deleted the previous day. However, the key is still enabled and usable. The key has an ARN of arn:aws;kms:us-east-2:123456789012:key/mrk-0bb0212cd9864fdea0dcamzo26efb5670. The security engineer must delete the key as quickly as possible.

Which solution will meet this requirement?

  1. Log in to the account by using the account root user credentials. Re-issue the deletion request for the KMS key with a waiting period of 7 days.
  2. Identify the other Regions where the KMS key ID is present and schedule the key for deletion in 7 days.
  3. Update the IAM principal lo allow kms:* permissions on the KMS key ARN. Re-issue the deletion request for the KMS key with a waiting period of 7 days.
  4. Disable the KMS key. Re-issue the deletion request for the KMS key in 30 days.
Show answer and explanation

Correct answer: B. Identify the other Regions where the KMS key ID is present and schedule the key for deletion in 7 days.

The mrk-prefix in the key ID shows this is a multi-Region primary key. A primary key cannot be deleted while replica keys exist, so it stays usable until every replica is deleted. Finding the replicas in the other Regions and scheduling them for deletion with the minimum 7-day wait allows the primary to be deleted as quickly as possible.

Why the other options are wrong

  • A. Root user credentials do not change the rule that a multi-Region primary key cannot be deleted while its replicas still exist.
  • C. The principal already has kms:* permissions, so granting them again does not remove the blocking replica keys.
  • D. Disabling the key and waiting 30 days is slower, and it still does not address the replica keys that prevent deletion.

Question 3

A company has installed a third-party application that is distributed on several Amazon EC2 instances and on-premises servers. Occasionally, the company's IT team needs to use SSH to connect to each machine to perform software maintenance tasks. Outside these time slots, the machines must be completely isolated from the rest of the network. The company does not want to maintain any SSH keys. Additionally, the company wants to pay only for machine hours when there is an SSH connection.

Which solution will meet these requirements?

  1. Create a bastion host with port forwarding to connect to the machines.
  2. Set up AWS Systems Manager Session Manager to allow temporary connections.
  3. Use AWS CloudShell to create serverless connections.
  4. Set up an interface VPC endpoint for each machine for private connection.
Show answer and explanation

Correct answer: B. Set up AWS Systems Manager Session Manager to allow temporary connections.

AWS Systems Manager Session Manager meets all requirements: it provides secure shell access without SSH keys, allows temporary connections that can be restricted to specific time windows, works with both EC2 and on-premises servers (via Systems Manager Agent), requires no infrastructure to maintain, and charges only when sessions are active. It integrates with IAM for access control and provides audit logging.

Why the other options are wrong

  • A. A bastion host requires maintaining SSH keys and keeping the bastion host running continuously, incurring constant costs rather than paying only for active connections.
  • C. CloudShell provides a shell environment for AWS service management but is not designed for SSH connections to arbitrary EC2 instances or on-premises servers.
  • D. VPC endpoints enable private connectivity but do not provide SSH access, authentication, or key management; they address network isolation rather than secure terminal access.

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REVIEWS

7 reviews for AWS SCS-C03 Exam Practice Questions

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How much of the AWS SCS-C03 bank is free?

143 questions in the bank

Each step includes the one before, so buying only adds new questions.

  • You are here10questionsFree sampleThree on this page, all ten as a PDF.Download the sample
  • 3625% of the bankPractice pageFree on the site, every answer explained.Go to the practice page
  • 4229% of the bankHalf PackFree by email, as one PDF, every answer explained.Get the Half Pack
  • 143100%, the whole bankFull pack, US$39Plus the questions-only PDF, monthly updates, refund if you fail.Get the full pack
ABOUT THIS PACK

What’s in the AWS SCS-C03 pack

  • 143 questions across all six SCS-C03 domains
  • Answers and explanations for every question, including the wrong options
  • A questions-only PDF for timed practice runs
  • Instant delivery by email the moment you check out
  • Free monthly updates for as long as the exam is live
  • Pass or your money back

A failed SCS-C03 attempt costs another US$300, plus the time it takes to restudy. This pack is US$39, paid once, and refunded if you fail.

What makes the SCS-C03 hard

SCS-C03 is a new exam, and most study material has not caught up. AWS replaced the C02 version in December 2025 with restructured domains, generative AI security on Bedrock, Security Lake and OCSF logging, Resource Control Policies, and new ordering and matching question formats, so prep built for the old exam tests a blueprint that no longer exists.

Complex IAM policy evaluation across accounts, KMS key policies and grants, GuardDuty versus Inspector versus Macie versus Detective, incident response automation, and SCP and RCP guardrails are the calls a real security engineer makes every day. 65 questions in 170 minutes, 750 out of 1000 to pass. This pack has 143 practice questions for the SCS-C03 across all domains, so the newer question formats and multi-account security patterns are familiar before you sit down.

About the exam

SCS-C03 certifies security engineers who protect AWS workloads at scale, covering identity, detection, incident response, data protection and governance with IAM, KMS, GuardDuty, Security Hub and AWS Organizations, plus new coverage of generative AI security. AWS recommends several years of security experience. Valid for three years.

Read the AWS SCS-C03 study guide

Questions before you buy

How quickly do I receive it?

Straight away. The full PDF and a questions-only copy are emailed to you the moment your payment goes through, and the same links are on your order page.

Are updates included?

Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.

What if I fail the exam?

We refund the pack, or swap it for any other pack if you would rather keep studying. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.

What is your pass rate?

99% of customers who prepare with a CertStash pack pass. If you do not, we refund the pack, or swap it for another pack.

Can I share it with colleagues?

Each purchase is licensed to one person. For a team, school or training organisation, email support@certstash.com for a licence that fits.

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