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| Section | Weight | Objectives |
|---|---|---|
| Data Protection | 22% | - Amazon S3 security best practices - Design and implement encryption solutions for data at rest and in transit - AWS Key Management Service (KMS) and customer managed keys - Database encryption and access control - AWS CloudTrail and encryption key audit |
| Infrastructure Security | 26% | - Design and implement host-based security - Architect network security segmentation (VPC architecture) - AWS Secret Manager and AWS Systems Manager Parameter Store - Design and implement edge security on AWS |
| Incident Response | 12% | - Identify, collect, and preserve forensic evidence - Determine root cause and recurrence prevention - Given an AWS security incident, outline the investigation and mitigation steps |
| Logging and Monitoring | 20% | - Troubleshoot security monitoring and alerting - Design and implement log analysis and management - Design and implement monitoring and alerting solutions |
| Identity and Access Management | 20% | - Design and implement identity and access management architecture - Troubleshoot IAM-based authentication and authorization issues - Design and implement cross-account access management - Implement temporary credentials and federation |
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問題 #38
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?
答案：C
解題說明：
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.
問題 #39
An ecommerce website was down for 1 hour following a DDoS attack. Users were unable to connect to the website during the attack period. The ecommerce company ' s security team is worried about future potential attacks and wants to prepare for such events. The company needs to minimize downtime in its response to similar attacks in the future.
Which steps would help achieve this? (Select TWO.)
答案：B,E
解題說明：
To minimize downtime during future DDoS events, the company should use services that provideactive DDoS protection and rapid mitigationat scale.AWS Shield Advanced(Option B) is designed for enhanced DDoS protection for internet-facing applications. It provides expanded detection and mitigation capabilities, cost protection in certain cases, and-critically-access to theAWS DDoS Response Team (DRT)through AWS Support so the company can engage experts during an attack to reduce impact and restore availability faster.
In addition,AWS WAF(Option E) helps mitigateapplication-layer (Layer 7)attacks that often accompany DDoS events (such as HTTP floods, bot-driven abuse, and known exploit patterns). WAF can block or challenge suspicious requests, apply rate-based controls, and use managed rule groups to reduce malicious traffic before it reaches the origin, improving resilience and availability.
Option A is incorrect because GuardDuty is a detection service; it does not automatically block traffic. Option C (Flow Logs + Lambda + SG blocks) is slow and brittle for DDoS because attackers are often distributed across many IPs and can change rapidly; security group updates are not an effective DDoS mitigation strategy. Option D is more about configuration governance and remediation, not real-time DDoS traffic mitigation.
問題 #40
A company has AWS accounts in an organization in AWS Organizations. The organization includes a dedicated security account.
All AWS account activity across all member accounts must be logged and reported to the dedicated security account. The company must retain all the activity logs in a secure storage location within the dedicated security account for2 years.No changes or deletions of the logs are allowed.
Which combination of steps will meet these requirements with theLEAST operational overhead? (Select TWO.)
答案：A,B
解題說明：
AWS CloudTrail organization trails are specifically designed to providecentralized, organization-wide loggingwith minimal operational effort. According to the AWS Certified Security - Specialty Official Study Guide, an organization trail recordsall management events for all member accountsand delivers them to asingle Amazon S3 bucket.
To ensure that logscannot be altered or deleted, Amazon S3Object Lock in compliance modemust be used.
Compliance mode enforceswrite-once-read-many (WORM)protection, meaningno user, including the root user, can delete or modify objects before the retention period expires. This directly satisfies the requirement that no changes or deletions are allowed for 2 years.
The S3 bucket must reside in thededicated security accountto provide isolation and strong security boundaries. Granting write permissions to theorganization's management account(Option A) aligns with AWS best practices, because the management account owns and manages the organization trail and centrally delivers logs on behalf of all member accounts.
Option B increases attack surface by allowing all member accounts to write directly. Option C does not meet immutability requirements because lifecycle policies do not prevent deletion. Option E introduces unnecessary services and operational complexity.
AWS documentation explicitly identifies the combination ofCloudTrail organization trails + S3 Object Lock (compliance mode)as therecommended, lowest-overhead solutionfor long-term, immutable audit log retention.
* AWS Certified Security - Specialty Official Study Guide
* AWS CloudTrail Organization Trail Documentation
* Amazon S3 Object Lock Documentation
* AWS Well-Architected Framework - Security Pillar
問題 #41
A company recently set up Amazon GuardDuty and is receiving a high number of findings from IP addresses within the company. A security engineer has verified that these IP addresses are trusted and allowed.
Which combination of steps should the security engineer take to configure GuardDuty so that it does not produce findings for these IP addresses? (Choose two.)
答案：A,E
解題說明：
GuardDuty supports "Trusted IP lists" to suppress findings that would otherwise be generated for activity originating from known safe IP addresses (for example, corporate NAT egress IPs, security scanners, or monitoring systems). To use a trusted IP list, you create aplain textfile that contains the IP addresses (typically one per line or in supported list form) and store it inAmazon S3. You then configure GuardDuty to reference that S3 object as a trusted IP list. GuardDuty periodically retrieves the file from S3 and uses it to adjust finding generation accordingly.
That maps directly to Option A (create a plaintext file) and Option D (upload to S3 and create a trusted IP list in GuardDuty pointing to the file).
問題 #42
A security engineer must investigate an Amazon GuardDuty finding. The finding indicates potential cryptocurrency mining activity on an Amazon EC2 instance. The security engineer must validate the finding and assess the impact.
Which data sources should the security engineer analyze to meet these requirements?
答案：A
解題說明：
Cryptocurrency mining validation requires evidence of actual mining behavior, not only metadata about the finding. Process details show whether mining binaries or suspicious processes are running on the instance. DNS analysis can reveal lookups to known mining pools or suspicious domains. VPC Flow Logs help confirm outbound connections, destinations, ports, and traffic volume from the instance. GuardDuty uses foundational data sources such as DNS logs, VPC Flow Logs, and CloudTrail events to detect suspicious activity, so those same sources are appropriate for validating and scoping the finding. CPU metrics alone are useful context but not enough. Counting findings or checking severity does not prove impact. Session history and Route
53 records do not directly validate mining behavior.
問題 #43
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最新SCS-C03題庫: https://tw.fast2test.com/SCS-C03-premium-file.html
順便提一下，可以從雲存儲中下載Fast2test SCS-C03考試題庫的完整版：https://drive.google.com/open?id=12rI_dOVD6atX0dd3pftxrjsc2-OW22G2