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Amazon SCS-C03 考試大綱：

主題	簡介
主題 1	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.
主題 2	Security Foundations and Governance: This domain addresses foundational security practices including policies, compliance frameworks, risk management, security automation, and audit procedures for AWS environments.
主題 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.

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最新的 AWS Certified Specialty SCS-C03 免費考試真題 (Q133-Q138):

問題 #133
A company stores infrastructure and application code in web-based, third-party, Git-compatible code repositories outside of AWS. The company wants to give the code repositories the ability to securely authenticate and assume an existing IAM role within the company's AWS account by using OpenID Connect (OIDC). Which solution will meet these requirements?

A. Create an OIDC identity provider (IdP) by using AWS Identity and Access Management (IAM) federation. Modify the trust policy of the IAM role to allow the code repositories to assume the IAM role.
B. Use AWS Resource Access Manager (AWS RAM) to create a new resource share that uses OIDC. Limit the resource share to the specified code repositories. Grant the IAM role access to the resource share.
C. Set up an account instance of AWS IAM Identity Center. Configure access to the code repositories as a customer managed OIDC application. Grant the application access to the IAM role.
D. Use AWS Identity and Access Management (IAM) Roles Anywhere to create a trust anchor that uses OIDC. Modify the trust policy of the IAM role to allow the code repositories to assume the IAM role.

答案：A

解題說明：
AWS IAM supports identity federation by allowing external identity providers that use OpenID Connect (OIDC) to authenticate and assume IAM roles. According to the AWS Certified Security - Specialty documentation, IAM OIDC identity providers are the recommended approach for enabling third-party systems, such as external CI/CD pipelines or Git-based repositories, to securely obtain temporary AWS credentials without using long-term access keys.
By creating an OIDC identity provider in IAM and configuring the IAM role trust policy to trust the external IdP, the company enables secure, token-based authentication. The trust policy can include conditions that restrict which repositories, branches, or workflows are allowed to assume the role, enforcing least privilege. AWS Security Specialty guidance emphasizes that this method eliminates static credentials and relies on short-lived tokens issued by the OIDC provider.
Option B is incorrect because IAM Roles Anywhere is designed for workloads running outside AWS that use X.509 certificates, not OIDC. Option C is intended for workforce identity federation, not machine-to-machine authentication. Option D is invalid because AWS RAM does not provide identity federation or authentication capabilities.
This solution aligns with AWS best practices for secure, scalable, and low-overhead authentication for external workloads.

問題 #134
A security engineer has designed a VPC to segment private traffic from public traffic. The VPC includes two Availability Zones. The security engineer has provisioned each Availability Zone with one private subnet and one public subnet. The security engineer has created three route tables for use with the environment. One route table is for the public subnets, and two route tables are for the private subnets (one route table for the private subnet in each Availability Zone).
The security engineer discovers that all four subnets are attempting to route traffic out through the internet gateway that is attached to the VPC.
Which combination of steps should the security engineer take to remediate this scenario? (Select TWO.)

A. Modify the route tables that are associated with each of the private subnets. Create a new route for the destination 0.0.0.0/0. Specify the internet gateway as the target of the route.
B. Verify that a NAT gateway has been provisioned in the private subnet in each Availability Zone.
C. Verify that a NAT gateway has been provisioned in the public subnet in each Availability Zone.
D. Modify the route tables that are associated with each of the public subnets. Create a new route for local destinations to the VPC CIDR range.
E. Modify the route tables that are associated with each of the private subnets. Create a new route for the destination 0.0.0.0/0. Specify the NAT gateway in the public subnet of the same Availability Zone as the target of the route.

答案：C,E

解題說明：
In a properly segmented VPC architecture, public subnets route internet-bound traffic to an internet gateway, while private subnets route outbound internet traffic through a NAT gateway that resides in a public subnet. According to the AWS Certified Security - Specialty Official Study Guide and Amazon VPC documentation, private subnets must never have a direct route to an internet gateway.
The issue described indicates that private subnets are incorrectly routing traffic directly to the internet gateway. To remediate this, a NAT gateway must be provisioned in each public subnet to ensure high availability across Availability Zones. This satisfies the requirement that private resources can initiate outbound connections without being directly reachable from the internet.
Next, the route tables associated with the private subnets must be updated so that the default route (0.0.0.0/0) points to the NAT gateway in the same Availability Zone. This ensures proper traffic flow and prevents cross-AZ dependencies.

問題 #135
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?

A. Create an AWS Config managed rule to detect unencrypted RDS storage. Configure an automatic remediation action 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.
B. 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.
C. 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.
D. 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.

答案：A

解題說明：
AWS Config provides managed rules that continuously evaluate resource configurations against compliance requirements. The AWS Certified Security - Specialty documentation highlights AWS Config managed rules as the preferred mechanism for enforcing configuration compliance at scale. The managed rule for encrypted RDS storage automatically detects DB instances and clusters that are created without encryption enabled.
By configuring automatic remediation, AWS Config can immediately invoke corrective actions without manual intervention. Integrating remediation with an Amazon SNS topic enables automated email notifications, while an AWS Lambda function can terminate the noncompliant resource. This creates a fully automated detect-alert-remediate workflow.
Option B requires manual remediation, which increases operational effort and delays enforcement. Options C and D rely on Amazon EventBridge, which evaluates events rather than configuration state and does not provide continuous compliance monitoring. AWS Config is explicitly designed for configuration compliance and governance use cases.
This solution aligns with AWS governance best practices by combining continuous monitoring, automated remediation, and centralized alerting with minimal operational overhead.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS Config Managed Rules
AWS Config Automatic Remediation

問題 #136
A company needs the ability to identify the root cause of security findings in an AWS account. The company has enabled VPC Flow Logs, Amazon GuardDuty, and AWS CloudTrail. The company must investigate any IAM roles that are involved in the security findings and must visualize the findings.
Which solution will meet these requirements?

A. Enable AWS Security Hub and use custom actions to investigate IAM roles.
B. Use Amazon Inspector to run investigations on the IAM roles and visualize the findings.
C. Use Amazon Detective to run investigations on the IAM roles and to visualize the findings.
D. Export GuardDuty findings to Amazon S3 and analyze them with Amazon Athena.

答案：C

解題說明：
Amazon Detective is a managed service designed specifically to investigate and analyze security findings by automatically correlating data from Amazon GuardDuty, AWS CloudTrail, and VPC Flow Logs.
According to the AWS Certified Security - Specialty Official Study Guide, Detective enables security teams to identify root causes, anomalous behavior, and indicators of compromise through interactive visualizations.
Amazon Detective allows investigators to pivot directly to IAM roles, users, and resources that are involved in GuardDuty findings. Detective builds behavior graphs and timelines that show API activity, network traffic, and historical context, making it easier to understand how and why a security incident occurred.
Amazon Inspector (Option B) focuses on vulnerability scanning of compute resources and does not investigate IAM behavior. Option C requires manual analysis and lacks native visualization. AWS Security Hub (Option D) aggregates findings but does not perform root-cause investigation or behavioral analysis.
AWS documentation explicitly states that Amazon Detective is the recommended service for deep-dive investigations following GuardDuty alerts, especially when IAM roles are involved.
* AWS Certified Security - Specialty Official Study Guide
* Amazon Detective User Guide
* Amazon GuardDuty Integration Documentation

問題 #137
A company must inventory sensitive data across all Amazon S3 buckets in all accounts from a single security account.

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

答案：B

解題說明：
Amazon Macie is the AWS service designed to discover and classify sensitive data in S3. Delegated administration enables centralized visibility across an organization. Security Hub aggregates Macie findings for a single-pane-of-glass view.
Inspector does not scan S3 data. Trusted Advisor is not a sensitive data discovery tool.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
Amazon Macie Multi-Account Architecture

問題 #138
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