Amazon Web Services SCS-C02 Study & Exam Dumps 2025

AWS Certified Security - Specialty Questions and Answers

Question 1

A company operates a web application that runs on Amazon EC2 instances. The application listens on port 80 and port 443. The company uses an Application Load Balancer (ALB) with AWS WAF to terminate SSL and to forward traffic to the application instances only on port 80.

The ALB is in public subnets that are associated with a network ACL that is named NACL1. The application instances are in dedicated private subnets that are associated with a network ACL that is named NACL2. An Amazon RDS for PostgreSQL DB instance that uses port 5432 is in a dedicated private subnet that is associated with a network ACL that is named NACL3. All the network ACLs currently allow all inbound and outbound traffic.

Which set of network ACL changes will increase the security of the application while ensuring functionality?

Options:

Make the following changes to NACL3:• Add a rule that allows inbound traffic on port 5432 from NACL2.• Add a rule that allows outbound traffic on ports 1024-65536 to NACL2.• Remove the default rules that allow all inbound and outbound traffic.

Make the following changes to NACL3:• Add a rule that allows inbound traffic on port 5432 from the CIDR blocks of the application instance subnets.• Add a rule that allows outbound traffic on ports 1024-65536 to the application instance subnets.• Remove the default rules that allow all inbound and outbound traffic.

Make the following changes to NACL2:• Add a rule that allows outbound traffic on port 5432 to the CIDR blocks of the RDS subnets.• Remove the default rules that allow all inbound and outbound traffic.

Make the following changes to NACL2:• Add a rule that allows inbound traffic on port 5432 from the CIDR blocks of the RDS subnets.• Add a rule that allows outbound traffic on port 5432 to the RDS subnets.

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Question 2

A Security Engineer is working with a Product team building a web application on AWS. The application uses Amazon S3 to host the static content, Amazon API

Gateway to provide RESTful services; and Amazon DynamoDB as the backend data store. The users already exist in a directory that is exposed through a SAML identity provider.

Which combination of the following actions should the Engineer take to enable users to be authenticated into the web application and call APIs? (Choose three.)

Options:

Create a custom authorization service using AWS Lambda.

Configure a SAML identity provider in Amazon Cognito to map attributes to the Amazon Cognito user pool attributes.

Configure the SAML identity provider to add the Amazon Cognito user pool as a relying party.

Configure an Amazon Cognito identity pool to integrate with social login providers.

Update DynamoDB to store the user email addresses and passwords.

Update API Gateway to use a COGNITO_USER_POOLS authorizer.

Answer:

B, C, F

Explanation:

The combination of the following actions should the Engineer take to enable users to be authenticated into the web application and call APIs are:

B. Configure a SAML identity provider in Amazon Cognito to map attributes to the Amazon Cognito user pool attributes.This is a necessary step to federate the existing users from the SAML identity provider to the Amazon Cognito user pool, which will be used for authentication and authorization1.

C. Configure the SAML identity provider to add the Amazon Cognito user pool as a relying party.This is a necessary step to establish a trust relationship between the SAML identity provider and the Amazon Cognito user pool, which will allow the users to sign in using their existing credentials2.

F. Update API Gateway to use a COGNITO_USER_POOLS authorizer.This is a necessary step to enable API Gateway to use the Amazon Cognito user pool as an authorizer for the RESTful services, which will validate the identity or access tokens that are issued by AmazonCognito when a user signs in successfully3.

The other options are incorrect because:

A.Creating a custom authorization service using AWS Lambda is not a necessary step, because Amazon Cognito user pools can provide built-in authorization features, such as scopes and groups, that can be used to control access toAPI resources4.

D.Configuring an Amazon Cognitoidentity pool to integrate with social login providers is not a necessary step, because the users already exist in a directory that is exposed through a SAML identity provider, and there is no requirement to support social login providers5.

E.Updating DynamoDB to store the user email addresses and passwords is not a necessary step, because the user credentials are already stored in the SAML identity provider, and there is no need to duplicate them in DynamoDB6.

[References:, 1:Using Tokens with User Pools2:Adding SAML Identity Providers to a User Pool3:Control Access to a REST API Using Amazon Cognito User Pools as Authorizer4:API Authorization with Resource Servers and OAuth 2.0 Scopes5:Using Identity Pools (Federated Identities)6: Amazon DynamoDB, , , , , ]

Question 3

A company is implementing new compliance requirements to meet customer needs. According to the new requirements the company must not use any Amazon RDS DB instances or DB clusters that lack encryption of the underlying storage. The company needs a solution that will generate an email alert when an unencrypted DB instance or DB cluster is created. The solution also must terminate the unencrypted DB instance or DB cluster.

Which solution will meet these requirements in the MOST operationally efficient manner?

Options:

Create an AWS Config managed rule to detect unencrypted ROS storage. Configure an automatic remediation action to publish messages to an Amazon SimpleNotification Service (Amazon SNS) topic that includes an AWS Lambda function and an email delivery target as subscribers. Configure the Lambda function to delete the unencrypted resource.

Create an AWS Config managed rule to detect unencrypted RDS storage. Configure a manual remediation action to invoke an AWS Lambda function. Configure the Lambda function to publish messages to an Amazon Simple Notification Service (Amazon SNS) topic and to delete the unencrypted resource.

Create an Amazon EventBridge rule that evaluates RDS event patterns and is initiated by the creation of DB instances or DB clusters Configure the rule to publish messages to an Amazon Simple Notification Service (Amazon SNS) topic that includes an AWS Lambda function and an email delivery target as subscribers. Configure the Lambda function to delete the unencrypted resource.

Create an Amazon EventBridge rule that evaluates RDS event patterns and is initiated by the creation of DB instances or DB clusters. Configure the rule to invoke an AWS Lambda function. Configure the Lambda function to publish messages to an Amazon Simple Notification Service (Amazon SNS) topic and to delete the unencrypted resource.

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