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Title: SCS-C03 Tests - SCS-C03 Exam [Print This Page]
Author: ellarog306    Time: yesterday 06:38
Title: SCS-C03 Tests - SCS-C03 Exam
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Amazon SCS-C03 Pr¨¹fungsplan:
ThemaEinzelheiten
Thema 1
  • Data Protection: This domain centers on protecting data at rest and in transit through encryption, key management, data classification, secure storage, and backup mechanisms.
Thema 2
  • Identity and Access Management: This domain deals with controlling authentication and authorization through user identity management, role-based access, federation, and implementing least privilege principles.
Thema 3
  • Detection: This domain covers identifying and monitoring security events, threats, and vulnerabilities in AWS through logging, monitoring, and alerting mechanisms to detect anomalies and unauthorized access.
Thema 4
  • Security Foundations and Governance: This domain addresses foundational security practices including policies, compliance frameworks, risk management, security automation, and audit procedures for AWS environments.
Thema 5
  • Incident Response: This domain addresses responding to security incidents through automated and manual strategies, containment, forensic analysis, and recovery procedures to minimize impact and restore operations.

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Amazon AWS Certified Security - Specialty SCS-C03 Pr¨¹fungsfragen mit Lösungen (Q70-Q75):70. Frage
A security engineer received an Amazon GuardDuty alert indicating a finding involving the Amazon EC2 instance that hosts the company ' s primary website. The GuardDuty finding received read:
UnauthorizedAccess:IAMUser/InstanceCredentialExfiltration. The security engineer confirmed that a malicious actor used API access keys intended for the EC2 instance from a country where the company does not operate. The security engineer needs to deny access to the malicious actor.
What is the first step the security engineer should take?
Antwort: D
Begr¨¹ndung:
The findingInstanceCredentialExfiltrationindicates that credentials available to the EC2 instance (from the instance profile / IMDS) were likely stolen and then used from an unusual location. The fastest way todeny the malicious actor immediatelyis to invalidate the stolen, currently usable credentials. Because these aretemporary credentialsissued to the instance profile role, the correct first containment action is torevoke active sessionsfor that role so the stolen session credentials stop working. This directly blocks continued API use while you continue investigation and remediation.
Changing security groups (Option A) affects inbound network access to the website but does not stop an attacker from using stolen API credentials against AWS APIs. Installing agents and running assessments (Options B and C) are investigative steps that take time and do not immediately cut off the attacker's current access. After revoking sessions, best practice incident response typically continues with additional containment and eradication steps such as rotating credentials, reviewing CloudTrail for actions taken, checking for persistence (new IAM users/keys, modified policies), patching the instance, and restricting IMDS (for example, enforcing IMDSv2) to reduce risk of further credential theft.

71. Frage
A company runs an application on a fleet of Amazon EC2 instances. The company can remove instances from the fleet without risk to the application. All EC2 instances use the same security group named ProdFleet.
Amazon GuardDuty and AWS Config are active in the company's AWS account.
A security engineer needs to provide a solution that will prevent an EC2 instance from sending outbound traffic if GuardDuty generates a cryptocurrency finding event. The security engineer creates a new security group named Isolate that contains no outbound rules. The security engineer configures an AWS Lambda function to remove an EC2 instance from the ProdFleet security group and add it to the Isolate security group.
Which additional step will meet this requirement?
Antwort: D
Begr¨¹ndung:
Amazon GuardDuty generates security findings when it detects suspicious or malicious activity, including CryptoCurrency:EC2/* findings that indicate an EC2 instance may be involved in unauthorized cryptocurrency mining. According to AWS Certified Security - Specialty documentation, GuardDuty findings are published as events toAmazon EventBridge(formerly Amazon CloudWatch Events).
Amazon EventBridge is the recommended service for buildingautomated incident response workflows. By creating an EventBridge rule that listens for GuardDuty findings of type CryptoCurrency:EC2/*, the security engineer can automatically invoke a Lambda function to isolate the affected EC2 instance by modifying its security group attachments.
Option A is incorrect because GuardDuty does not directly invoke Lambda functions. Option B and Option D are incorrect because AWS Config tracks configuration compliance and resource changes, not real-time threat detection events. Cryptocurrency findings are security detections, not configuration changes.
AWS documentation explicitly describes this pattern-GuardDuty # EventBridge # Lambda # remediation action-as a best practice for automated threat response and containment.
* AWS Certified Security - Specialty Official Study Guide
* Amazon GuardDuty User Guide - Findings
* Amazon EventBridge User Guide
* AWS Incident Response Best Practices

72. Frage
A company is expanding its group of stores. On the day that each new store opens, the company wants to launch a customized web application for that store. Each store's application will have a non-production environment and a production environment. Each environment will be deployed in a separate AWS account.
The company uses AWS Organizations and has an OU that is used only for these accounts.
The company distributes most of the development work to third-party development teams. A security engineer needs to ensure that each team follows the company's deployment plan for AWS resources. The security engineer also must limit access to the deployment plan to only the developers who need access. The security engineer already has created an AWS CloudFormation template that implements the deployment plan.
What should the security engineer do next to meet the requirements in theMOST secureway?
Antwort: C
Begr¨¹ndung:
AWS Service Catalog is designed to allow organizations to create and manageapproved sets of CloudFormation templates, known as products, and make them available to specific accounts or organizational units (OUs). According to the AWS Certified Security - Specialty Study Guide, Service Catalog is thepreferred governance mechanismfor enforcing standardized infrastructure deployments while maintaining strong access controls.
By creating a Service Catalog portfolio in the management account and sharing it with a specific OU, the security engineer ensures that only accounts within that OU can deploy the approved CloudFormation template. This guarantees that third-party developers can deploy infrastructureonly in accordance with the company's predefined deployment plan, without modifying or directly accessing the template itself.
Option B and D use CloudFormation modules, which are intended for reusable resource definitions but do not provide the same level ofdeployment governance, access control, and lifecycle managementas Service Catalog. Option C introduces unnecessary cross-account IAM roles, increasing the attack surface and operational complexity, which violates the "most secure" requirement.
AWS documentation explicitly states thatService Catalog is the recommended service for distributing standardized CloudFormation templates across AWS Organizations, while controlling who can deploy them and where.
* AWS Certified Security - Specialty Official Study Guide
* AWS Service Catalog Administrator Guide
* AWS Organizations Best Practices
* AWS Well-Architected Framework - Security Pillar

73. Frage
A security engineer needs to prepare Amazon EC2 instances for quarantine during a security incident. AWS Systems Manager Agent (SSM Agent) is installed, and a script exists to install and update forensic tools.
Which solution will quarantine EC2 instances during a security incident?
Antwort: B
Begr¨¹ndung:
AWS Systems Manager Run Command enables secure, remote execution of commands on EC2 instances without requiring network access or inbound ports. According to the AWS Certified Security - Specialty Study Guide, Run Command is a recommended mechanism for incident response actions such as installing forensic tools, collecting evidence, or applying quarantine controls.
By granting the SSM Agent permission to execute a predefined Run Command document, the security engineer can immediately run the quarantine script across affected instances. This approach supports automation, scalability, and auditability, all of which are critical during security incidents.
Options A, B, and C do not directly enforce quarantine or execute response actions. Tracking versions and storing scripts alone do not trigger incident response.
AWS documentation highlights Systems Manager Run Command as a core capability for automated containment and investigation.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS Systems Manager Run Command
AWS Incident Response Automation

74. Frage
Hotspot Question
A security engineer needs to implement AWS IAM Identity Center with an external identity provider (IdP).
Select and order the correct steps from the following list to meet this requirement. Select each step one time or not at all. (Select and order THREE.)

Antwort:
Begr¨¹ndung:


75. Frage
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