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| Section | Weight | Objectives |
|---|---|---|
| Logging and Monitoring | 20% | - Design and implement log analysis and management - Troubleshoot security monitoring and alerting - Design and implement monitoring and alerting solutions |
| Incident Response | 12% | - Given an AWS security incident, outline the investigation and mitigation steps - Identify, collect, and preserve forensic evidence - Determine root cause and recurrence prevention |
| Infrastructure Security | 26% | - Architect network security segmentation (VPC architecture) - Design and implement edge security on AWS - Design and implement host-based security - AWS Secret Manager and AWS Systems Manager Parameter Store |
| Data Protection | 22% | - AWS Key Management Service (KMS) and customer managed keys - Amazon S3 security best practices - AWS CloudTrail and encryption key audit - Database encryption and access control - Design and implement encryption solutions for data at rest and in transit |
| Identity and Access Management | 20% | - Design and implement identity and access management architecture - Design and implement cross-account access management - Implement temporary credentials and federation - Troubleshoot IAM-based authentication and authorization issues |
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問題 #88
A company manages multiple AWS accounts through an organization in AWS Organizations. The company enables all features in the organization.
A security team must implement a solution to centrally manage VPC security groups across the accounts. The company uses an existing reference security group with the required configuration.
The solution must detect if security group rules have been modified to deviate from the reference security group. The solution must automatically restore any noncompliant security groups to match the reference security group. The security team needs to select a solution that does not require custom development or scripting.
Which solution will meet these requirements?
答案：B
解題說明：
AWS Firewall Manager is the correct no-code centralized service for managing security groups across AWS Organizations. Firewall Manager security group policies can apply centrally controlled security group policies, audit rules, identify noncompliant security groups, and remediate deviations. AWS documentation states that Firewall Manager continuously maintains policies and applies them to accounts and resources as they are added or updated across the organization. It also supports common security group policies that replicate primary security groups and keep replicas synchronized with the primary. Systems Manager Automation or custom AWS Config remediation would require custom logic. CloudFormation StackSets can deploy initial security groups, but it does not continuously detect and automatically restore out-of- band rule changes in the required governance model.
問題 #89
A startup company is using a single AWS account that has resources in a single AWS Region. A security engineer configures an AWS CloudTrail trail in the same Region to deliver log files to an Amazon S3 bucket by using the AWS CLI. Because of expansion, the company adds resources in multiple Regions. The security engineer notices that the logs from the new Regions are not reaching the S3 bucket.
What should the security engineer do to fix this issue with the LEAST amount of operational overhead?
答案：C
解題說明：
CloudTrail trails can be configured as eithersingle-Regionormulti-Region. A single-Region trail delivers events only for the Region in which it is created; when the company begins using additional Regions, those events will not be logged to the existing S3 destination unless the trail is updated. The least operational overhead is tomodify the existing trailand enablemulti-Regionlogging (that is, configure the trail to "apply to all Regions"). This preserves the current S3 bucket destination, encryption settings, log file validation configuration, IAM roles, and any integrations that already depend on the existing trail name and S3 prefix structure.
Creating a new trail (Options A or C) increases overhead because the engineer would need to manage multiple trails or migrate downstream processes (alerting, Athena tables, SIEM ingestion, retention policies, and lifecycle rules). Option B is not how CloudTrail works-S3 notifications do not cause CloudTrail to collect events from other Regions; CloudTrail must be configured to generate and deliver those logs.
Therefore, updating the existing trail to be multi-Region is the simplest and most maintainable fix.
問題 #90
A company uses an incident response team to troubleshoot incidents. The incident response team must use temporary credentials from AWS STS for cross-account IAM role access when troubleshooting. Occasionally, each team member will need to respond to multiple different types of incidents simultaneously. Based on the type of incident, the company wants to dynamically assign minimal permissions to whichever team member responds.
Which solution will meet these requirements?
答案：D
解題說明：
Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security - Specialty topics:
STS session policies are designed to reduce permissions for a specific assumed-role session. AWS documentation states that the resulting session permissions are the intersection of the role's identity-based policy and the session policy, and that session policies cannot grant more permissions than the role already allows. Therefore, the cross-account role must have the full set of permissions needed across incident types, and each incident response session can be narrowed dynamically with a session policy. Option C is impossible because a session policy cannot add permissions to an otherwise permissionless role. Permissions boundaries are used to limit maximum permissions for identities, not dynamically tailor individual STS sessions. Creating roles per incident with Lambda is unnecessary operational overhead.
問題 #91
A company uses AWS Organizations. The company has teams that use an AWS CloudHSM hardware security module (HSM) that is hosted in a central AWS account. One of the teams creates its own new dedicated AWS account and wants to use the HSM that is hosted in the central account.
How should a security engineer share the HSM that is hosted in the central account with the new dedicated account?
答案：D
解題說明：
AWS CloudHSM is aVPC-scopedservice: the HSMs (and the CloudHSM cluster) live inside a VPC in the central account, and clients connect over the network to perform cryptographic operations. When another account needs to use a centrally managed CloudHSM cluster, the right approach is toshare the CloudHSM clusterwith that account and allow network connectivity from the consuming account's clients. AWS provides cross-account resource sharing throughAWS Resource Access Manager (AWS RAM)for supported resources, including CloudHSM clusters.
Sharing thecluster/HSM identifieris what grants the consuming account visibility/ability to create client configurations against that shared cluster.
After sharing, the consuming account's EC2 instances (CloudHSM clients) still must be able to reach the HSM ENIs over the network, so the CloudHSM security group in the central account must allow inbound connections from the client sources (typically by security group referencing via VPC connectivity, or by allowing the relevant IP range/ports as appropriate).
問題 #92
A company is running a containerized application on an Amazon Elastic Container Service (Amazon ECS) cluster that uses AWS Fargate. The application runs as several ECS services. The ECS services are in individual target groups for an internet-facing Application Load Balancer (ALB). The ALB is the origin for an Amazon CloudFront distribution. An AWS WAF web ACL is associated with the CloudFront distribution.
Web clients access the ECS services through the CloudFront distribution. The company learns that the web clients can bypass the web ACL and can access the ALB directly.
Which solution will prevent the web clients from directly accessing the ALB?
答案：B
解題說明：
The correct solution is option D because it effectively prevents direct access to the internet-facing ALB while allowing legitimate traffic that originates from Amazon CloudFront. By configuring CloudFront to include a custom HTTP header (such as X-Shared-Secret) in all origin requests, and then configuring ALB listener rules to only forward requests that contain the expected header value, the ALB will reject any requests that bypass CloudFront.
This approach is a documented AWS best practice when CloudFront is placed in front of an ALB and AWS WAF is associated with the CloudFront distribution. AWS WAF only evaluates traffic that flows through CloudFront; therefore, preventing direct access to the ALB is critical to ensure that all requests are inspected by the web ACL.
Option A is invalid because CloudFront does not support AWS PrivateLink endpoints as origins. Option B is incorrect because CloudFront cannot use an internal ALB as an origin; CloudFront requires a publicly reachable origin. Option C is not recommended because CloudFront IP ranges change frequently, making IP- based allow lists operationally complex and error-prone, and AWS does not provide a supported CloudFront prefix list for ALB listener rules.
AWS Security Specialty guidance explicitly recommends using custom origin headers to restrict ALB access to CloudFront-only traffic, making option D the correct and secure solution.
問題 #93
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