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Amazon SCS-C03 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Identity and Access Management20%- Secure authentication and authorization
  • 1. Integrate with external identity providers
  • 2. Implement multi-factor authentication
  • 3. Manage federated access
- Monitor and audit access activity
  • 1. Review access logs and reports
  • 2. Detect and remediate excessive permissions
- Design and implement secure access strategies
  • 1. Manage identities and permissions at scale
  • 2. Implement least privilege access models
  • 3. Use IAM policies, roles, and permissions boundaries
Topic 2: Incident Response14%- Implement post-incident activities
  • 1. Document lessons learned
  • 2. Update security controls and processes
- Investigate and remediate security incidents
  • 1. Contain, eradicate, and recover from incidents
  • 2. Conduct forensic analysis on AWS resources
- Develop incident response plans and procedures
  • 1. Define roles and responsibilities
  • 2. Establish communication and escalation processes
Topic 3: Detection16%- Design and implement threat detection mechanisms
  • 1. Detect anomalies and potential security incidents
  • 2. Use AWS security services for monitoring and alerting
  • 3. Configure and manage log collection and analysis
- Automate detection and response workflows
  • 1. Implement event-driven security automation
  • 2. Integrate security tools and services
Topic 4: Infrastructure Security18%- Design and implement secure network architecture
  • 1. Protect network traffic and communications
  • 2. Implement network access control and segmentation
  • 3. Secure VPC design and configuration
- Secure compute and storage resources
  • 1. Harden operating systems and applications
  • 2. Manage access to storage services
  • 3. Encrypt data at rest and in transit
- Protect workloads and applications
  • 1. Secure containerized and serverless environments
  • 2. Implement security groups and firewalls
Topic 5: Data Protection18%- Design and implement data protection strategies
  • 1. Define data retention and disposal policies
  • 2. Classify and categorize data
- Secure data access and sharing
  • 1. Control access to sensitive data
  • 2. Implement secure data transfer and sharing mechanisms
- Implement encryption and key management
  • 1. Manage encryption keys using AWS KMS and CloudHSM
  • 2. Encrypt data across all storage and processing layers
Topic 6: Security Foundations and Governance14%- Establish security frameworks and compliance
  • 1. Implement security policies and standards
  • 2. Align with industry standards and regulations
- Secure development and operations
  • 1. Implement security as code
  • 2. Integrate security into CI/CD pipelines
- Manage security risk and compliance
  • 1. Implement compliance controls and reporting
  • 2. Perform risk assessments and audits

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Amazon AWS Certified Security - Specialty 認定 SCS-C03 試験問題 (Q250-Q255):

質問 # 250
A security engineer is designing a solution that will provide end-to-end encryption between clients and Docker containers running in Amazon Elastic Container Service (Amazon ECS). This solution must also handle volatile traffic patterns. Which solution would have the MOST scalability and LOWEST latency?

正解：B

解説：
Network Load Balancers operate at Layer 4 and are optimized for extreme performance, ultra-low latency, and handling sudden traffic spikes. According to AWS Certified Security - Specialty documentation, using a TCP listener on an NLB allows TLS traffic to pass through directly to backend containers without termination, preserving true end-to-end encryption.
This approach eliminates the overhead of decrypting and re-encrypting traffic at the load balancer, reducing latency and maximizing throughput. NLBs scale automatically to handle volatile traffic patterns and millions of requests per second.
Application Load Balancers operate at Layer 7 and introduce additional latency due to TLS termination and HTTP processing. Route 53 multivalue routing does not provide load balancing at the transport layer and does not ensure encryption handling.
AWS recommends NLB TCP pass-through for high-performance, end-to-end encrypted container workloads.


質問 # 251
A company has installed a third-party application that is distributed on several Amazon EC2 instances and on-premises servers. Occasionally, the company's IT team needs to use SSH to connect to each machine to perform software maintenance tasks. Outside these time slots, the machines must be completely isolated from the rest of the network. The company does not want to maintain any SSH keys. Additionally, the company wants to pay only for machine hours when there is an SSH connection.
Which solution will meet these requirements?

正解：B

解説：
AWS Systems ManagerSession Managerprovides interactive shell access to managed instanceswithout inbound SSH,without bastion hosts, andwithout managing SSH keys. Access is controlled through IAM policies, and every session can be logged to CloudWatch Logs/S3 for auditability. This directly satisfies the "no SSH keys" requirement and reduces the network exposure surface because you can keep port 22 closed and still obtain shell access when needed.
To meet the isolation requirement, the instances can be placed in private subnets with no inbound access, and you can use Systems Manager connectivity (via SSM endpoints/agents) for administrative sessions only when required. On-premises servers can also be managed by Systems Manager by registering them as managed instances (hybrid activations), allowing the same no-SSH-key operational model across EC2 and on-prem environments.


質問 # 252
A company is operating an open-source software platform that is internet facing. The legacy software platform no longer receives security updates. The software platform operates using Amazon Route 53 weighted load balancing to send traffic to two Amazon EC2 instances that connect to an Amazon RDS cluster. A recent report suggests this software platform is vulnerable to SQL injection attacks, with samples of attacks provided. The company's security engineer must secure this system against SQL injection attacks within 24 hours. The solution must involve the least amount of effort and maintain normal operations during implementation.
What should the security engineer do to meet these requirements?

正解：A

解説：
AWS WAF provides managed and custom rules that can immediately mitigate common web exploits such as SQL injection without modifying application code. According to AWS Certified Security - Specialty documentation, placing AWS WAF in front of an Application Load Balancer is a recommended rapid- response control for legacy applications with known vulnerabilities.
Creating an ALB in front of the existing EC2 instances allows seamless traffic migration. AWS WAF SQL injection rules can be deployed and tested without downtime. Updating Route 53 to point to the ALB preserves normal operations. Restricting EC2 security groups afterward prevents bypassing the WAF.
Option B introduces CloudFront changes and single-origin testing, increasing complexity. Option C cannot be completed within 24 hours and risks downtime. Option D is invalid because AWS WAF cannot be attached directly to EC2 instances.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS WAF Web ACL Architecture
AWS Application Load Balancer Security


質問 # 253
A company's web application is hosted on Amazon EC2 instances running behind an Application Load Balancer (ALB) in an Auto Scaling group. An AWS WAF web ACL is associated with the ALB. AWS CloudTrail is enabled and stores logs in Amazon S3 and Amazon CloudWatch Logs.
The operations team has observed some EC2 instances reboot at random. After rebooting, all access logs on the instances have been deleted. During an investigation, the operations team found that each reboot happened just after a PHP error occurred on the new-user-creation.php file. The operations team needs to view log information to determine if the company is being attacked.
Which set of actions will identify the suspect attacker's IP address for future occurrences?

正解：D

解説：
AWS WAF logs capturedetailed request-level information, including source IP address, request URI, headers, and rule evaluation results. According to the AWS Certified Security - Specialty documentation, AWS WAF logging is acritical detection controlwhen application-level attacks are suspected, especially when host-based logs are unreliable or can be erased by attackers.
By configuring the AWS WAF web ACL to send logs toAmazon Data Firehose, the company ensures that all future requests are centrally captured and delivered to a durable storage service such as Amazon S3. Using Amazon Athena, the security team can query these logs to identify requests targeting specific application paths such as new-user-creation.php and extract the originating client IP addresses.
Option A is incorrect because VPC Flow Logs operate at the network layer and do not capture HTTP request paths. Option B is invalid because ALBs do not support CloudWatch agents. Option C is viable but introduces additional operational complexity and cost, making it less appropriate than the native WAF logging solution.
AWS documentation highlightsAWS WAF logging combined with Athenaas a best practice for forensic analysis and attacker identification.
* AWS Certified Security - Specialty Official Study Guide
* AWS WAF Logging Documentation
* Amazon Athena User Guide
* AWS Detection and Monitoring Best Practices


質問 # 254
A company that uses AWS Organizations is using AWS IAM Identity Center to administer access to AWS accounts. A security engineer is creating a custom permission set in IAM Identity Center. The company will use the permission set across multiple accounts. An AWS managed policy and a customer managed policy are attached to the permission set. The security engineer has full administrative permissions and is operating in the management account.
When the security engineer attempts to assign the permission set to an IAM Identity Center user who has access to multiple accounts, the assignment fails.
What should the security engineer do to resolve this failure?

正解：C

解説：
In IAM Identity Center, a permission set that includes acustomer managed policydoes not "carry" that policy into each target account automatically unless the policy exists there. When you attach a customer managed policy by name to a permission set, IAM Identity Center expects that policy to be present in each account where the permission set is provisioned. If the policy is missing in any account (common when assigning across multiple accounts), provisioning/assignment can fail because Identity Center cannot attach a non- existent policy to the role it creates in that account.
The correct fix is tocreate the customer managed policy in every target account, ensuring it has thesame nameand the intended permissions in each account. Once the policy exists consistently across accounts, IAM Identity Center can successfully provision the permission set in each account and complete the user assignment.
Options B and D are workarounds that increase complexity and do not address the underlying requirement to use the customer managed policy across accounts. Option C is not the issue here; policy "conflicts" typically do not prevent provisioning-missing referenced customer managed policies do. Therefore, ensuring the customer managed policy exists in each assigned account resolves the failure with the intended multi-account design.


質問 # 255
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