Legit SCS-C02 Exam Download

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Question 60

A company uses infrastructure as code (IaC) to create AWS infrastructure. The company writes the code as AWS CloudFormation templates to deploy the infrastructure. The company has an existing CI/CD pipeline that the company can use to deploy these templates.

After a recent security audit, the company decides to adopt a policy-as-code approach to improve the company's security posture on AWS. The company must prevent the deployment of any infrastructure that would violate a security policy, such as an unencrypted Amazon Elastic Block Store (Amazon EBS) volume.

Which solution will meet these requirements?

Options:

Turn on AWS Trusted Advisor. Configure security notifications as webhooks in the preferences section of the CI/CD pipeline.

Turn on AWS Config. Use the prebuilt rules or customized rules. Subscribe the CI/CD pipeline to an Amazon Simple Notification Service (Amazon SNS) topic that receives notifications from AWS Config.

Create rule sets in AWS CloudFormation Guard. Run validation checks for CloudFormation templates as a phase of the CI/CD process.

Create rule sets as SCPs. Integrate the SCPs as a part of validation control in a phase of the CI/CD process.

Answer:

Explanation:

The correct answer is C. Create rule sets in AWS CloudFormation Guard. Run validation checks for CloudFormation templates as a phase of the CI/CD process.

This answer is correct because AWS CloudFormation Guard is a tool that helps you implement policy-as-code for your CloudFormation templates. You can use Guard to write rules that define your security policies, such as requiring encryption for EBS volumes, and then validate your templates against those rules before deploying them. You can integrate Guard into your CI/CD pipeline as a step that runs the validation checks and prevents the deployment of any non-compliant templates12.

The other options are incorrect because:

A. Turning on AWS Trusted Advisor and configuring security notifications as webhooks in the preferences section of the CI/CD pipeline is not a solution, because AWS Trusted Advisor is not a policy-as-code tool, but a service that provides recommendations to help you follow AWS best practices. Trusted Advisor does not allow you to define your own security policies or validate your CloudFormation templates against them3.
B. Turning on AWS Config and using the prebuilt or customized rules is not a solution, because AWS Config is not a policy-as-code tool, but a service that monitors and records the configuration changes of your AWS resources. AWS Config does not allow you to validate your CloudFormation templates before deploying them, but only evaluates the compliance of your resources after they are created4.
D. Creating rule sets as SCPs and integrating them as a part of validation control in a phase of the CI/CD process is not a solution, because SCPs are not policy-as-code tools, but policies that you can use to manage permissions in your AWS Organizations. SCPs do not allow you to validate your CloudFormation templates, but only restrict the actions that users and roles can perform in your accounts5.

References:

1: What is AWS CloudFormation Guard? 2: Introducing AWS CloudFormation Guard 2.0 3: AWS Trusted Advisor 4: What Is AWS Config? 5: Service control policies - AWS Organizations

Question 61

A company has a single AWS account and uses an Amazon EC2 instance to test application code. The company recently discovered that the instance was compromised. The instance was serving up malware. The analysis of the instance showed that the instance was compromised 35 days ago.

A security engineer must implement a continuous monitoring solution that automatically notifies the company’s security team about compromised instances through an email distribution list for high severity findings. The security engineer must implement the solution as soon as possible.

Which combination of steps should the security engineer take to meet these requirements? (Choose three.)

Options:

Enable AWS Security Hub in the AWS account.

Enable Amazon GuardDuty in the AWS account.

Create an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe the security team’s email distribution list to the topic.

Create an Amazon Simple Queue Service (Amazon SQS) queue. Subscribe the security team’s email distribution list to the queue.

Create an Amazon EventBridge (Amazon CloudWatch Events) rule for GuardDuty findings of high severity. Configure the rule to publish a message to the topic.

Create an Amazon EventBridge (Amazon CloudWatch Events) rule for Security Hub findings of high severity. Configure the rule to publish a message to the queue.

Question 62

A company has AWS accounts in an organization in AWS Organizations. The company needs to install a corporate software package on all Amazon EC2 instances for all the accounts in the organization.

A central account provides base AMIs for the EC2 instances. The company uses AWS Systems Manager for software inventory and patching operations.

A security engineer must implement a solution that detects EC2 instances ttjat do not have the required software. The solution also must automatically install the software if the software is not present.

Which solution will meet these requirements?

Options:

Provide new AMIs that have the required software pre-installed. Apply a tag to the AMIs to indicate that the AMIs have the required software. Configure an SCP that allows new EC2 instances to be launched only if the instances have the tagged AMIs. Tag all existing EC2 instances.

Configure a custom patch baseline in Systems Manager Patch Manager. Add the package name for the required software to the approved packages list. Associate the new patch baseline with all EC2 instances. Set up a maintenance window for software deployment.

Centrally enable AWS Config. Set up the ec2-managedinstance-applications-required AWS Config rule for all accounts Create an Amazon EventBridge rule that reacts to AWS Config events. Configure the EventBridge rule to invoke an AWS Lambda function that uses Systems Manager Run Command to install the required software.

Create a new Systems Manager Distributor package for the required software. Specify the download location. Select all EC2 instances in the different accounts. Install the software by using Systems Manager Run Command.

Question 63

A company's security engineer is designing an isolation procedure for Amazon EC2 instances as part of an incident response plan. The security engineer needs to isolate a target instance to block any traffic to and from the target instance, except for traffic from the company's forensics team. Each of the company's EC2 instances has its own dedicated security group. The EC2 instances are deployed in subnets of a VPC. A subnet can contain multiple instances.

The security engineer is testing the procedure for EC2 isolation and opens an SSH session to the target instance. The procedure starts to simulate access to the target instance by an attacker. The security engineer removes the existing security group rules and adds security group rules to give the forensics team access to the target instance on port 22.

After these changes, the security engineer notices that the SSH connection is still active and usable. When the security engineer runs a ping command to the public IP address of the target instance, the ping command is blocked.

What should the security engineer do to isolate the target instance?

Options:

Add an inbound rule to the security group to allow traffic from 0.0.0.0/0 for all ports. Add an outbound rule to the security group to allow traffic to 0.0.0.0/0 for all ports. Then immediately delete these rules.

Remove the port 22 security group rule. Attach an instance role policy that allows AWS Systems Manager Session Manager connections so that the forensics team can access the target instance.

Create a network ACL that is associated with the target instance's subnet. Add a rule at the top of the inbound rule set to deny all traffic from 0.0.0.0/0. Add a rule at the top of the outbound rule set to deny all traffic to 0.0.0.0/0.

Create an AWS Systems Manager document that adds a host-level firewall rule to block all inbound traffic and outbound traffic. Run the document on the target instance.