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[General] Pass Guaranteed Quiz Amazon - SCS-C03 - AWS Certified Security - Specialty–Trust

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【General】 Pass Guaranteed Quiz Amazon - SCS-C03 - AWS Certified Security - Specialty–Trust

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Amazon SCS-C03 Exam Syllabus Topics:
TopicDetails
Topic 1
  • Infrastructure Security: This domain focuses on securing AWS infrastructure including networks, compute resources, and edge services through secure architectures, protection mechanisms, and hardened configurations.
Topic 2
  • 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.
Topic 3
  • Security Foundations and Governance: This domain addresses foundational security practices including policies, compliance frameworks, risk management, security automation, and audit procedures for AWS environments.
Topic 4
  • 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.

Amazon AWS Certified Security - Specialty Sample Questions (Q84-Q89):NEW QUESTION # 84
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?
  • A. 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.
  • B. 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.
  • C. 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.
  • D. 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.
Answer: C
Explanation:
Amazon EC2 security groups are stateful, meaning that once a connection is established, return traffic is automatically allowed, even if the inbound rule that originally permitted the connection is later removed. According to the AWS Certified Security - Specialty Official Study Guide and Amazon EC2 security documentation, existing connections are not terminated when security group rules change. This explains why the SSH session remains active even after the security group rules were modified, while new traffic such as ICMP ping is blocked.
To immediately and fully isolate an EC2 instance during an incident response scenario, AWS recommends using stateless network controls. Amazon VPC network ACLs (NACLs) are stateless, which means that every packet is evaluated against the ACL rules regardless of whether the traffic is part of an existing connection. When a deny rule is added, all traffic is immediately blocked, including active sessions.
By creating a network ACL and associating it with the subnet that contains the target instance, and by adding explicit deny rules with the lowest rule numbers for both inbound and outbound traffic, the security engineer ensures that all network communication to and from the instance is immediately interrupted. This approach satisfies the requirement to isolate the instance while preserving its runtime state and memory for forensic analysis.
Other options fail to meet the requirement because security group modifications do not terminate existing sessions, Systems Manager does not enforce network isolation, and host-level firewall changes require instance-level access and do not provide immediate, network-enforced isolation.

NEW QUESTION # 85
A company uses AWS IAM Identity Center to manage access to its AWS accounts. The accounts are in an organization in AWS Organizations. A security engineer needs to set up delegated administration of IAM Identity Center in the organization's management account. Which combination of steps should the security engineer perform in IAM Identity Center before configuring delegated administration? (Select THREE.)
  • A. Grant least privilege access to the organization's management account.
  • B. Create user assignments only in the organization's management account.
  • C. Create permission sets for use only in the organization's management account.
  • D. Create IAM users for use only in the organization's management account.
  • E. Set up a second AWS Region in the organization's management account.
  • F. Create a new IAM Identity Center directory in the organization's management account.
Answer: B,C,F
Explanation:
AWS IAM Identity Center delegated administration requires foundational configuration to be completed in the organization's management account before delegation. According to the AWS Certified Security - Specialty documentation, IAM Identity Center must be enabled with a directory in the management account before any delegation can occur.
Permission sets must be created in the management account because they define the permissions that will later be delegated to member accounts. Additionally, user assignments must initially exist in the management account to establish baseline access control before delegation is configured.
Option A is too generic and not a required prerequisite step. Option C is unrelated to Identity Center delegation. Option E is incorrect because IAM Identity Center uses identities from its directory or external IdPs, not IAM users.
AWS guidance clearly outlines directory creation, permission set definition, and initial user assignments as mandatory preparatory steps for delegated administration.

NEW QUESTION # 86
A company is using AWS Organizations with nested OUs to manage AWS accounts. The company has a custom compliance monitoring service for the accounts. The monitoring service runs as an AWS Lambda function and is invoked by Amazon EventBridge Scheduler.
The company needs to deploy the monitoring service in all existing and future accounts in the organization. The company must avoid using the organization's management account when the management account is not required.
Which solution will meet these requirements?
  • A. Configure a delegated administrator account for AWS CloudFormation. Create a CloudFormation StackSet in the delegated administrator account targeting the organization root with automatic deployment enabled.
  • B. Create a CloudFormation stack set in the organization's management account and manually add new accounts.
  • C. Use Systems Manager delegated administration and Automation to deploy the Lambda function and schedule.
  • D. Create a Systems Manager Automation runbook in the management account and share it to accounts.
Answer: A
Explanation:
AWS Organizations and CloudFormation StackSets provide an organizational deployment mechanism for consistent infrastructure across accounts. AWS Certified Security - Specialty guidance emphasizes minimizing use of the management account and using delegated administrator capabilities where available for centralized governance while reducing blast radius.
By configuring a delegated administrator account for AWS CloudFormation, the company can create and manage StackSets without performing day-to-day deployment operations from the management account. Targeting the organization root ensures the StackSet deploys to all existing accounts. Enabling automatic deployment ensures that any future accounts that join the organization (or move into targeted OUs, depending on configuration) automatically receive the monitoring service without manual intervention. This directly meets the requirement to deploy to all existing and future accounts with minimal effort. Option A requires ongoing manual updates when accounts are added, increasing operational overhead. Options C and D rely on Systems Manager Automation, which can work but introduces additional operational complexity and is not the standard AWS mechanism for organization-wide infrastructure rollout compared to StackSets with auto-deployment. StackSets also provide consistent change control, drift detection, and centralized update mechanisms, which align with governance expectations for compliance tooling.

NEW QUESTION # 87
A company has the following security policy for its Amazon Aurora MySQL databases for a single AWS account:
* Database storage must be encrypted at rest.
* Deletion protection must be enabled.
* Databases must not be publicly accessible.
* Database audit logs must be published to Amazon CloudWatch Logs.
A security engineer must implement a solution thatcontinuously monitorsall Aurora MySQL resources for compliance with this policy. The solution must be able todisplay a database's compliance state for each part of the policy at any time.
Which solution will meet these requirements?
  • A. Create an Amazon EventBridge rule that runs when an Aurora MySQL resource is created or modified.Create an AWS Lambda function to verify the security requirements and to send the compliance state to a CloudWatch custom metric.
  • B. Enable AWS Audit Manager. Configure Audit Manager to use a custom framework that matches the security requirements. Create an assessment report to view the compliance state.
  • C. Enable AWS Security Hub. Create a configuration policy that includes the security requirements. Apply the configuration policy to all Aurora MySQL resources. View the compliance state in Security Hub.
  • D. Enable AWS Config. Implement AWS Config managed rules that monitor all Aurora MySQL resources for the security requirements. View the compliance state in the AWS Config dashboard.
Answer: D
Explanation:
AWS Config is a fully managed service that providescontinuous monitoring and evaluation of AWS resource configurationsagainst desired configuration baselines. According to the AWS Certified Security - Specialty Official Study Guide, AWS Config is the primary service used totrack configuration changes, evaluate compliance in near real time, and display compliance statesfor individual AWS resources.
AWS Config providesmanaged rulesthat directly map to the listed Aurora MySQL security requirements, including encryption at rest, public accessibility, deletion protection, and log exports to CloudWatch Logs.
These managed rules continuously evaluate resources and mark them as compliant or noncompliant whenever a configuration change occurs.
The AWS Config dashboard enables security engineers to viewper-resource and per-rule compliance states at any point in time, satisfying the requirement to display compliance status for each part of the policy.
AWS Audit Manager (Option A) is designed for audit evidence collection and reporting, not continuous monitoring. AWS Security Hub (Option C) aggregates findings from other services but relies on AWS Config for configuration compliance data. Option D introduces unnecessary custom logic and does not provide a native compliance dashboard.
AWS documentation explicitly identifiesAWS Config as the authoritative service for continuous compliance monitoring and visibility.
* AWS Certified Security - Specialty Official Study Guide
* AWS Config Developer Guide
* Amazon Aurora Security Best Practices
* AWS Well-Architected Framework - Security Pillar

NEW QUESTION # 88
A company runs a web application on a fleet of Amazon EC2 instances that are in an Auto Scaling group. The EC2 instances are in the same VPC subnet as other workloads.
A security engineer deploys an Amazon GuardDuty detector in the same AWS Region as the EC2 instances and integrates GuardDuty with AWS Security Hub.
The security engineer needs to implement an automated solution to detect and appropriately respond to anomalous traffic patterns for the web application. The solution must comply with AWS best practices for initial response to security incidents and must minimize disruption to the web application.
Which solution will meet these requirements?
  • A. Create an Amazon EventBridge rule that invokes an AWS Lambda function when GuardDuty detects anomalous traffic. Configure the function to remove the affected instance from the Auto Scaling group and attach a restricted security group.
  • B. Disable the EC2 instance profile credentials by using AWS Lambda.
  • C. Update the subnet network ACL to block traffic from the detected source IP addresses.
  • D. Send GuardDuty findings to Amazon SNS for email notification.
Answer: A
Explanation:
AWS incident response best practices emphasize rapid containment with minimal blast radius.
According to the AWS Certified Security - Specialty Official Study Guide, isolating a compromised resource while allowing the application to continue running is the preferred initial response.
By using Amazon EventBridge to detect GuardDuty findings related to anomalous traffic and invoking a Lambda function, the security engineer can automatically remove the affected EC2 instance from the Auto Scaling group and attach a restricted security group. This immediately isolates the instance while allowing Auto Scaling to launch a replacement instance, ensuring application availability.

NEW QUESTION # 89
......
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