Amazon SCS-C03 Questions Answers

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Amazon SCS-C03 Sample Questions

Question # 1

A security engineer receives a notice about suspicious activity from a Linux-based Amazon EC2 instance that uses Amazon Elastic Block Store (Amazon EBS)-based storage. The instance is making connections to known malicious addresses. The instance is in a development account within a VPC that is in the us-east-1 Region. The VPC contains an internet gateway and has a subnet in us-east-1a and us-east-1b. Each subnet is associated with a route table that uses the internet gateway as a default route. Each subnet also uses the default network ACL. The suspicious EC2 instance runs within the us-east-1b subnet. During an initial investigation, a security engineer discovers that the suspicious instance is the only instance that runs in the subnet. Which response will immediately mitigate the attack and help investigate the root cause?

A. Log in to the suspicious instance and use the netstat command to identify remote connections. Use the IP addresses from these remote connections to create deny rules in the security group of the instance. Install diagnostic tools on the instance for investigation. Update the outbound network ACL for the subnet in us-east-1b to explicitly deny all connections as the first rule during the investigation of the instance. 
B. Update the outbound network ACL for the subnet in us-east-1b to explicitly deny all connections as the first rule. Replace the security group with a new security group that allows connections only from a diagnostics security group. Update the outbound network ACL for the us-east-1b subnet to remove the deny all rule. Launch a new EC2 instance that has diagnostic tools. Assign the new security group to the new EC2 instance. Use the new EC2 instance to investigate the suspicious instance. 
C. Ensure that the Amazon Elastic Block Store (Amazon EBS) volumes that are attached to the suspicious EC2 instance will not delete upon termination. Terminate the instance. Launch a new EC2 instance in us-east-1a that has diagnostic tools. Mount the EBS volumes from the terminated instance for investigation. 
D. Create an AWS WAF web ACL that denies traffic to and from the suspicious instance. Attach the AWS WAF web ACL to the instance to mitigate the attack. Log in to the instance and install diagnostic tools to investigate the instance. 

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Question # 2

A security engineer needs to control access to data that is encrypted with an AWS Key Management Service (AWS KMS) customer managed key. The security engineer also needs to use additional authenticated data (AAD) to prevent tampering with ciphertext. Which solution will meet these requirements? 

A. Pass the key alias to AWS KMS when calling the Encrypt and Decrypt API actions. 
B. Use IAM policies to restrict access to the Encrypt and Decrypt API actions. 
C. Use the kms:EncryptionContext condition key when defining IAM policies for the customer managed key. 
D. Use key policies to restrict access to the appropriate IAM groups. 

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Question # 3

A company needs to detect unauthenticated access to its Amazon Elastic Kubernetes Service (Amazon EKS) clusters. The solution must require no additional configuration of the existing EKS deployment. Which solution will meet these requirements with the LEAST operational effort? 

A. Install a third-party security add-on.
 B. Enable AWS Security Hub and monitor Kubernetes findings. 
C. Monitor CloudWatch Container Insights metrics for EKS. 
D. Enable Amazon GuardDuty and use EKS Audit Log Monitoring. 

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Question # 4

A company uses AWS Organizations and has an SCP at the root that prevents sharing resources with external accounts. The company now needs to allow only the marketing account to share resources externally while preventing all other accounts from doing so. All accounts are in the same OU. Which solution will meet these requirements? 

A. Create a new SCP in the marketing account to explicitly allow sharing. 
B. Edit the existing SCP to add a condition that excludes the marketing account. 
C. Edit the SCP to include an Allow statement for the marketing account. 
D. Use a permissions boundary in the marketing account. 

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Question # 5

A company has a web application that reads from and writes to an Amazon S3 bucket. The company needs to authenticate all S3 API calls with AWS credentials. Which solution will provide the application with AWS credentials?

A. Use Amazon Cognito identity pools and the GetId API. 
B. Use Amazon Cognito identity pools and AssumeRoleWithWebIdentity. 
C. Use Amazon Cognito user pools with ID tokens. 
D. Use Amazon Cognito user pools with access tokens. 

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Question # 6

A company recently experienced a malicious attack on its cloud-based environment. The company successfully contained and eradicated the attack. A security engineer is performing incident response work. The security engineer needs to recover an Amazon RDS database cluster to the last known good version. The database cluster is configured to generate automated backups with a retention period of 14 days. The initial attack occurred 5 days ago at exactly 3:15 PM. Which solution will meet this requirement? 

A. Identify the Regional cluster ARN for the database. Use the ARN to restore the Regional cluster by using the restore to point in time feature. Set a target time 5 days ago at 3:14 PM. 
B. Identify the Regional cluster ARN for the database. List snapshots that have been taken of the cluster. Restore the database by using the snapshot that has a creation time that is closest to 5 days ago at 3:14 PM. 
C. List all snapshots that have been taken of all the company's RDS databases. Identify the snapshot that was taken closest to 5 days ago at 3:14 PM and restore it. 
D. Identify the Regional cluster ARN for the database. Use the ARN to restore the Regional cluster by using the restore to point in time feature. Set a target time 14 days ago. 

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Question # 7

A security engineer is designing a solution that will provide end-to-end encryption between clients and Docker containers running in Amazon Elastic Container Service (Amazon ECS). This solution must also handle volatile traffic patterns. Which solution would have the MOST scalability and LOWEST latency?

A. Configure a Network Load Balancer to terminate the TLS traffic and then re-encrypt the traffic to the containers. 
B. Configure an Application Load Balancer to terminate the TLS traffic and then re-encrypt the traffic to the containers. 
C. Configure a Network Load Balancer with a TCP listener to pass through TLS traffic to the containers. 
D. Configure Amazon Route 53 to use multivalue answer routing to send traffic to the containers. 

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Question # 8

A company runs a public web application on Amazon EKS behind Amazon CloudFront and an Application Load Balancer (ALB). A security engineer must send a notification to an existing Amazon SNS topic when the application receives 10,000 requests from the same end-user IP address within any 5-minute period. Which solution will meet these requirements? 

A. Configure CloudFront standard logging and CloudWatch Logs metric filters. 
B. Configure VPC Flow Logs and CloudWatch Logs metric filters. 
C. Configure an AWS WAF web ACL with an ASN match rule and CloudWatch alarms. 
D. Configure an AWS WAF web ACL with a rate-based rule. Associate it with CloudFront. Create a CloudWatch alarm to notify SNS. 

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Question # 9

A company must inventory sensitive data across all Amazon S3 buckets in all accounts from a single security account. 

A. Delegate Amazon Macie and Security Hub administration. 
B. Use Amazon Inspector with Security Hub. 
C. Use Inspector with Trusted Advisor. 
D. Use Macie with Trusted Advisor. 

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Question # 10

A company that uses AWS Organizations is using AWS IAM Identity Center to administer access to AWS accounts. A security engineer is creating a custom permission set in IAM Identity Center. The company will use the permission set across multiple accounts. An AWS managed policy and a customer managed policy are attached to the permission set. The security engineer has full administrative permissions and is operating in the management account. When the security engineer attempts to assign the permission set to an IAM Identity Center user who has access to multiple accounts, the assignment fails. What should the security engineer do to resolve this failure? 

A. Create the customer managed policy in every account where the permission set is assigned. Give the customer managed policy the same name and same permissions in each account. 
B. Remove either the AWS managed policy or the customer managed policy from the permission set. Create a second permission set that includes the removed policy. Apply the permission sets separately to the user. 
C. Evaluate the logic of the AWS managed policy and the customer managed policy. Resolve any policy conflicts in the permission set before deployment. 
D. Do not add the new permission set to the user. Instead, edit the user's existing permission set to include the AWS managed policy and the customer managed policy. 

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Question # 11

A company is operating an open-source software platform that is internet facing. The legacy software platform no longer receives security updates. The software platform operates using Amazon Route 53 weighted load balancing to send traffic to two Amazon EC2 instances that connect to an Amazon RDS cluster. A recent report suggests this software platform is vulnerable to SQL injection attacks, with samples of attacks provided. The company's security engineer must secure this system against SQL injection attacks within 24 hours. The solution must involve the least amount of effort and maintain normal operations during implementation. What should the security engineer do to meet these requirements?

A. Create an Application Load Balancer with the existing EC2 instances as a target group. Create an AWS WAF web ACL containing rules that protect the application from this attack, then apply it to the ALB. Test to ensure the vulnerability has been mitigated, then redirect the Route 53 records to point to the ALB. Update security groups on the EC2 instances to prevent direct access from the internet. 
B. Create an Amazon CloudFront distribution specifying one EC2 instance as an origin. Create an AWS WAF web ACL containing rules that protect the application from this attack, then apply it to the distribution. Test to ensure the vulnerability has been mitigated, then redirect the Route 53 records to point to CloudFront. 
C. Obtain the latest source code for the platform and make the necessary updates. Test the updated code to ensure that the vulnerability has been mitigated, then deploy the patched version of the platform to the EC2 instances. 
D. Update the security group that is attached to the EC2 instances, removing access from the internet to the TCP port used by the SQL database. Create an AWS WAF web ACL containing rules that protect the application from this attack, then apply it to the EC2 instances. 

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Question # 12

A company uploads data files as objects into an Amazon S3 bucket. A vendor downloads the objects to perform data processing. A security engineer must implement a solution that prevents objects from residing in the S3 bucket for longer than 72 hours. 

A. Configure S3 Versioning to expire object versions that have been in the bucket for 72 hours. 
B. Configure an S3 Lifecycle configuration rule on the bucket to expire objects after 72 hours. 
C. Use the S3 Intelligent-Tiering storage class and configure expiration after 72 hours. 
D. Generate presigned URLs that expire after 72 hours. 

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Question # 13

A company needs a cloud-based, managed desktop solution for its workforce of remote employees. The company wants to ensure that the employees can access the desktops only by using company-provided devices. A security engineer must design a solution that will minimize cost and management overhead. Which solution will meet these requirements? 

A. Deploy a custom virtual desktop infrastructure (VDI) solution with a restriction policy to allow access only from corporate devices. 
B. Deploy a fleet of Amazon EC2 instances. Assign an instance to each employee with certificate-based device authentication that uses Windows Active Directory. 
C. Deploy Amazon WorkSpaces. Set up a trusted device policy with IP blocking on the authentication gateway by using AWS Identity and Access Management (IAM). 
D. Deploy Amazon WorkSpaces. Create client certificates, and deploy them to trusted devices. Enable restricted access at the directory level. 

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Question # 14

A company runs ECS services behind an internet-facing ALB that is the origin for CloudFront. An AWS WAF web ACL is associated with CloudFront, but clients can bypass it by accessing the ALB directly. Which solution will prevent direct access to the ALB? 

A. Use AWS PrivateLink with the ALB. 
B. Replace the ALB with an internal ALB. 
C. Restrict ALB listener rules to CloudFront IP ranges. 
D. Require a custom header from CloudFront and validate it at the ALB. 

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Question # 15

A security engineer needs to implement a solution to identify any sensitive data that is stored in an Amazon S3 bucket. The solution must report on sensitive data in the S3 bucket by using an existing Amazon Simple Notification Service (Amazon SNS) topic. Which solution will meet these requirements with the LEAST implementation effort? 

A. Enable AWS Config. Configure AWS Config to monitor for sensitive data in the S3 bucket and to send notifications to the SNS topic. 
B. Create an AWS Lambda function to scan the S3 bucket for sensitive data that matches a pattern. Program the Lambda function to send notifications to the SNS topic. 
C. Configure Amazon Macie to use managed data identifiers to identify and categorize sensitive data. Create an Amazon EventBridge rule to send notifications to the SNS topic. 
D. Enable Amazon GuardDuty. Configure AWS CloudTrail S3 data events. Create an Amazon CloudWatch alarm that reacts to GuardDuty findings and sends notifications to the SNS topic. 

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