IT Certifications · SCS-C03

AWS Certified Security - Specialty Practice Test

The AWS Certified Security - Specialty (SCS-C03) focuses on securing AWS workloads and applications, with particular attention to data classification and protection. The subject matter connects access control, encryption, monitoring, and configuration safeguards to practical security work across cloud environments.

Exam overview

Exam providerAmazon Web Services
Exam codeSCS-C03
CategoryIT Certifications

About the AWS Certified Security - Specialty Exam

Security work on AWS requires choosing controls that fit the threat and the scope of the environment. This practice bank includes scenarios about using service control policies to set organization-wide permission limits, analyzing IAM activity to identify unused access, and selecting key-management options for encryption. Other questions distinguish CloudTrail activity records from ongoing configuration evaluation with AWS Config, and consider network threat detection for traffic within a VPC. These decisions reflect tasks such as investigating changes, reducing excessive permissions, enforcing resource safeguards, and protecting data at rest. Pay attention to where a control applies, what it can prevent or detect, and whether it operates at the account, organization, resource, or network level.

Sample Practice Questions

Review a selection from this exam's published US Practice Tests practice bank.

Question 1

A company wants to centrally control permissions granted to all AWS accounts in an Organization, regardless of what individual IAM users or roles are configured to allow. Which mechanism is best for setting those maximum permission boundaries at scale?

  1. AAWS Organizations service control policies (SCPs)
  2. BIAM permission boundaries
  3. CAWS Key Management Service (KMS) grants
  4. DAmazon Cognito identity pools
Show answerCorrect answer: A

Service control policies set the maximum available permissions for accounts in an AWS Organization. They are an account-level guardrail, so even if an IAM policy allows an action, the SCP can still block it.

Question 2

Which AWS feature allows a customer to supply and control the encryption key material used by AWS services while AWS still performs the cryptographic operations?

  1. AAWS Key Management Service customer managed key
  2. BAWS CloudTrail trail
  3. CAmazon S3 lifecycle policy
  4. DAWS Security Hub insight
Show answerCorrect answer: A

A customer managed KMS key lets the customer control permissions, rotation settings, and key usage policies while AWS integrations can use the key for encryption and decryption operations.

Question 3

What is the primary purpose of an AWS CloudTrail trail?

  1. ATo automatically block inbound malicious traffic
  2. BTo record AWS API activity and account events for auditing and investigation
  3. CTo encrypt EBS volumes by default
  4. DTo manage SSL/TLS certificates for load balancers
Show answerCorrect answer: B

CloudTrail records AWS API calls and related events, which helps with auditing, compliance, and incident investigation. It does not block traffic, encrypt storage, or manage certificates.

Question 4

A company wants to continuously evaluate whether its AWS resources comply with internal configuration rules, such as whether encryption is enabled on an S3 bucket or a security group is overly permissive. Which service is most appropriate?

  1. AAWS Config
  2. BAmazon GuardDuty
  3. CAWS IAM Access Analyzer
  4. DAWS Secrets Manager
Show answerCorrect answer: A

AWS Config monitors and records resource configuration changes and can evaluate resources against desired compliance rules. It is the best choice for configuration compliance checks.

Question 5

A security engineer wants to inspect network traffic patterns and identify threats such as port scanning or unexpected connections between workloads inside a VPC. Which service is the best fit?

  1. AVPC Flow Logs
  2. BAWS WAF
  3. CAmazon Detective
  4. DAWS Trusted Advisor
Show answerCorrect answer: A

VPC Flow Logs capture information about IP traffic going to and from network interfaces in a VPC. They are commonly used to analyze traffic patterns and troubleshoot or investigate suspicious network activity.

Question 6

A company wants to continuously evaluate AWS resource configurations against compliance rules, such as whether encryption is enabled or a security group is overly permissive. Which AWS service is intended for this ongoing evaluation?

  1. AAWS Config
  2. BAWS CloudTrail
  3. CAmazon Inspector
  4. DAWS IAM Access Analyzer
Show answerCorrect answer: A

AWS Config continuously evaluates and records resource configurations and can compare them to desired settings using rules. CloudTrail logs API activity, Inspector focuses on vulnerability findings, and Access Analyzer evaluates resource sharing and policy access.

Question 7

A company wants to centrally prevent all AWS accounts in an organization from using public S3 buckets, even if an administrator accidentally changes a bucket policy. What is the best control to enforce this at scale?

  1. AAn S3 bucket ACL on each bucket
  2. BA service control policy in AWS Organizations
  3. CAn IAM access key rotation policy
  4. DAn AWS CloudTrail event selector
Show answerCorrect answer: B

A service control policy can set organization-wide guardrails that limit which actions are possible in member accounts, regardless of local IAM permissions. This makes it appropriate for broadly preventing public S3 configurations at scale.

How to use this practice test

The free US Practice Tests bank contains 50 published questions. Each session presents up to 20 questions selected at random, and results appear after the session. Use the questions to check how well you distinguish AWS security controls and to identify concepts that need another pass.

Preparation tips

  • Compare IAM policies, permissions boundaries, and AWS Organizations service control policies by the permissions each can limit and the scope where it applies.
  • Practice distinguishing AWS KMS key management from customer-supplied key material, including who controls the material and who performs cryptographic operations.
  • Separate CloudTrail's record of account activity from AWS Config's evaluation of resource configurations; identify the operational question each service answers.
  • For VPC threat scenarios, note whether the task is detecting suspicious network activity or enforcing traffic access, then match the requirement to the relevant control.
  • Use IAM Access Analyzer policy-generation insights to reason about permissions used in practice and how that evidence can support least-privilege policies.
Official sourceOfficial exam information ↗Official exam page ↗