Most Recent Amazon SCS-C03 Exam Dumps

Prepare for the Amazon AWS Certified Security - Specialty exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Amazon SCS-C03 exam and achieve success.

The questions for SCS-C03 were last updated on Apr 22, 2026.

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Question No. 1

A company detects bot activity targeting Amazon Cognito user pool endpoints. The solution must block malicious requests while maintaining access for legitimate users.

Which solution meets these requirements?

AEnable Amazon Cognito threat protection.

BRestrict access to authenticated users only.

CAssociate AWS WAF with the Cognito user pool.

DMonitor requests with CloudWatch.

Show Answer

Correct Answer: A

Amazon Cognito threat protection is purpose-built to detect and mitigate malicious authentication activity such as credential stuffing and bot traffic. It uses adaptive risk-based analysis without disrupting legitimate users.

AWS WAF cannot be directly associated with Cognito user pools.

Referenced AWS Specialty Documents:

AWS Certified Security -- Specialty Official Study Guide

Amazon Cognito Threat Protection

Question No. 2

A company needs centralized log monitoring with automatic detection across hundreds of AWS accounts.

Which solution meets these requirements with the LEAST operational effort?

ADesignate a GuardDuty administrator account and enable protections.

BCentralize CloudWatch logs and use Inspector.

CCentralize CloudTrail logs and query with Athena.

DStream logs to Kinesis and process with Lambda.

Show Answer

Correct Answer: A

Amazon GuardDuty provides fully managed threat detection across accounts when configured with delegated administration. EKS and RDS protections enable workload-aware detection with minimal setup.

Other solutions require custom pipelines and higher operational overhead.

Referenced AWS Specialty Documents:

AWS Certified Security -- Specialty Official Study Guide

Amazon GuardDuty Multi-Account Architecture

Question No. 3

An application is running on an Amazon EC2 instance that has an IAM role attached. The IAM role provides access to an AWS Key Management Service (AWS KMS) customer managed key and an Amazon S3 bucket. The key is used to access 2 TB of sensitive data that is stored in the S3 bucket. A security engineer discovers a potential vulnerability on the EC2 instance that could result in the compromise of the sensitive data. Due to other critical operations, the security engineer cannot immediately shut down the EC2 instance for vulnerability patching.

What is the FASTEST way to prevent the sensitive data from being exposed?

ADownload the data from the existing S3 bucket to a new EC2 instance. Then delete the data from the S3 bucket. Re-encrypt the data with a client-based key. Upload the data to a new S3 bucket.

BBlock access to the public range of S3 endpoint IP addresses by using a host-based firewall. Ensure that internet-bound traffic from the affected EC2 instance is routed through the host-based firewall.

CRevoke the IAM role's active session permissions. Update the S3 bucket policy to deny access to the IAM role. Remove the IAM role from the EC2 instance profile.

DDisable the current key. Create a new KMS key that the IAM role does not have access to, and re-encrypt all the data with the new key. Schedule the compromised key for deletion.

Show Answer

Correct Answer: C

AWS incident response best practices emphasize rapid containment to prevent further data exposure. According to the AWS Certified Security -- Specialty Study Guide, the fastest and least disruptive containment method for compromised compute resources is to immediately revoke credentials and permissions rather than modifying data or infrastructure.

Revoking the IAM role's active sessions prevents the EC2 instance from continuing to access AWS services. Updating the S3 bucket policy to explicitly deny access to the IAM role ensures immediate enforcement, even if temporary credentials remain cached. Removing the IAM role from the instance profile further prevents new credentials from being issued.

Option A and D involve large-scale data movement or re-encryption, which is time-consuming and operationally expensive. Option B relies on network-level controls that do not prevent access through private AWS endpoints.

AWS guidance explicitly recommends credential revocation and policy-based denial as the fastest containment step during active incidents.

Referenced AWS Specialty Documents:

AWS Certified Security -- Specialty Official Study Guide

AWS Incident Response Best Practices

AWS IAM Role Session Management

Question No. 4

A company has a VPC that has no internet access and has the private DNS hostnames option enabled. An Amazon Aurora database is running inside the VPC. A security engineer wants to use AWS Secrets Manager to automatically rotate the credentials for the Aurora database. The security engineer configures the Secrets Manager default AWS Lambda rotation function to run inside the same VPC that the Aurora database uses. However, the security engineer determines that the password cannot be rotated properly because the Lambda function cannot communicate with the Secrets Manager endpoint.

What is the MOST secure way that the security engineer can give the Lambda function the ability to communicate with the Secrets Manager endpoint?

AAdd a NAT gateway to the VPC to allow access to the Secrets Manager endpoint.

BAdd a gateway VPC endpoint to the VPC to allow access to the Secrets Manager endpoint.

CAdd an interface VPC endpoint to the VPC to allow access to the Secrets Manager endpoint.

DAdd an internet gateway for the VPC to allow access to the Secrets Manager endpoint.

Show Answer

Correct Answer: C

AWS Secrets Manager is a regional service that is accessed through private AWS endpoints. In a VPC without internet access, AWS recommends using AWS PrivateLink through interface VPC endpoints to enable secure, private connectivity to supported AWS services. According to AWS Certified Security -- Specialty documentation, interface VPC endpoints allow resources within a VPC to communicate with AWS services without traversing the public internet, NAT devices, or internet gateways.

An interface VPC endpoint for Secrets Manager creates elastic network interfaces (ENIs) within the VPC subnets and assigns private IP addresses that route traffic directly to the Secrets Manager service. Because the VPC has private DNS enabled, the standard Secrets Manager DNS hostname resolves to the private IP addresses of the interface endpoint, allowing the Lambda rotation function to communicate securely and transparently.

Option A introduces unnecessary complexity and expands the attack surface by allowing outbound internet access. Option B is incorrect because gateway VPC endpoints are supported only for Amazon S3 and Amazon DynamoDB. Option D violates the security requirement by exposing the VPC to the internet.

AWS security best practices explicitly recommend interface VPC endpoints as the most secure connectivity method for private VPC workloads accessing AWS managed services.

Referenced AWS Specialty Documents:

AWS Certified Security -- Specialty Official Study Guide

AWS Secrets Manager Security Architecture

AWS PrivateLink and Interface VPC Endpoints Documentation

Question No. 5

A company runs an application on an Amazon EC2 instance. The application generates invoices and stores them in an Amazon S3 bucket. The instance profile that is attached to the instance has appropriate access to the S3 bucket. The company needs to share each invoice with multiple clients that do not have AWS credentials. Each client must be able to download only the client's own invoices. Clients must download their invoices within 1 hour of invoice creation. Clients must use only temporary credentials to access the company's AWS resources.

Which additional step will meet these requirements?

AUpdate the S3 bucket policy to ensure that clients that use pre-signed URLs have the S3:Get* permission and the S3:List* permission to access S3 objects in the bucket.

BAdd a StringEquals condition to the IAM role policy for the EC2 instance profile. Configure the policy condition to restrict access based on the s3:ResourceTag/ClientId tag of each invoice. Tag each generated invoice with the ID of its corresponding client.

CUpdate the script to use AWS Security Token Service (AWS STS) to obtain new credentials each time the script runs by assuming a new role that has S3:GetObject permissions. Use the credentials to generate the pre-signed URLs.

DGenerate an access key and a secret key for an IAM user that has S3:GetObject permissions on the S3 bucket. Embed the keys into the script. Use the keys to generate the pre-signed URLs.

Show Answer

Correct Answer: B

Amazon S3 pre-signed URLs grant temporary access based on the permissions of the principal that generates them. AWS Certified Security -- Specialty documentation explains that fine-grained authorization can be enforced by combining pre-signed URLs with IAM policy conditions.

By tagging each invoice object with a client identifier and adding a condition to the EC2 instance role policy using s3:ResourceTag/ClientId, the role can generate pre-signed URLs only for objects associated with a specific client. This ensures that each client can access only their own invoices, even though the URLs are temporary and unauthenticated.

Option A over-permissions clients. Option C is unnecessary because instance profiles already use temporary credentials. Option D violates AWS best practices by using long-term credentials.

AWS recommends resource tagging with IAM policy conditions for scalable, secure access control.

Referenced AWS Specialty Documents:

AWS Certified Security -- Specialty Official Study Guide

Amazon S3 Pre-Signed URLs

IAM Policy Conditions and Resource Tags

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