最新的Amazon SCS-C03：AWS Certified Security - Specialty真題 -權威的Testpdf SCS-C03最新試題
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SCS-C03最新試題 & SCS-C03在線考題
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Amazon SCS-C03 考試大綱：
主題
簡介
主題 1
主題 2
主題 3
最新的 AWS Certified Specialty SCS-C03 免費考試真題 (Q10-Q15):
問題 #10
A security engineer is working with a development team to design a supply chain application that stores sensitive inventory data in an Amazon S3 bucket. The application will use an AWS Key Management Service (AWS KMS) customer managed key to encrypt the data in Amazon S3.
The inventory data in Amazon S3 will be shared with hundreds of vendors. All vendors will use AWS principals from their own AWS accounts to access the data in Amazon S3. The vendor list might change weekly. The security engineer needs to find a solution that supports cross-account access.
Which solution is the MOST operationally efficient way to manage access control for the customer managed key?
答案：B
解題說明：
KMS grants provide a scalable and efficient way to manage access to AWS KMS customer- managed keys, especially for cross-account access. Grants allow you to specify who can use the key and what operations they can perform on it without needing to modify the KMS key policy itself. Grants are flexible and can be created, modified, and revoked programmatically, making them ideal for situations where the vendor list changes frequently.
This approach minimizes operational overhead while allowing the security engineer to dynamically control access to the KMS key as vendor requirements change.
問題 #11
A company uses AWS Organizations to manage an organization that consists of three workload OUs: Production, Development, and Testing. The company uses AWS CloudFormation templates to define and deploy workload infrastructure in AWS accounts that are associated with the OUs.
Different SCPs are attached to each workload OU.
The company successfully deployed a CloudFormation stack update to workloads in the Development OU and the Testing OU. When the company uses the same CloudFormation template to deploy the stack update in an account in the Production OU, the update fails. The error message reports insufficient IAM permissions.
What is the FIRST step that a security engineer should take to troubleshoot this issue?
答案：C
解題說明：
AWS CloudTrail provides a record of all API calls made in an AWS account, including calls initiated by AWS CloudFormation. According to the AWS Certified Security - Specialty Study Guide, CloudTrail is the primary source for troubleshooting authorization failures because it records denied actions and the policy type that caused the denial, including service control policies.
Reviewing CloudTrail logs allows a security engineer to identify which specific API calls failed during the CloudFormation deployment and whether the denial was caused by an SCP, an IAM policy, or a permission boundary. This evidence-based approach is the recommended first step before making any configuration changes.
Option B is unsafe and violates governance best practices by removing SCPs in production.
Option C may be necessary later, but it does not identify whether SCPs are the root cause.
Option D introduces unnecessary risk and bypasses the purpose of differentiated controls across OUs.
AWS documentation emphasizes observing and validating before modifying security controls, making CloudTrail log analysis the correct initial troubleshooting step.
問題 #12
A company's application team needs a new AWS Key Management Service (AWS KMS) customer managed key to use with Amazon S3. The company's security policy requires separate keys for different AWS services to limit security exposure. How can a security engineer limit the KMS customer managed key to work with only Amazon S3?
答案：C
解題說明：
AWS KMS provides condition keys that can be used to tightly scope how and where a customer managed key can be used. According to the AWS Certified Security - Specialty Study Guide, the kms:ViaService condition key is specifically designed to restrict key usage to requests that originate from a particular AWS service in a specific Region.
By configuring the key policy to allow KMS cryptographic operations only when kms:ViaService equals s3.<region>.amazonaws.com, the security engineer ensures that the key can be used exclusively by Amazon S3. Even if other IAM principals have permissions to use the key, the key cannot be used by other services such as Amazon EC2, Amazon RDS, or AWS Lambda.
Option A is incorrect because AWS services do not assume identities in key policies. Options C and D modify IAM role policies, which do not control how a KMS key is used by AWS services.
AWS documentation clearly states that service-level restrictions must be enforced at the KMS key policy level using condition keys.
This approach enforces strong separation of duties and limits blast radius, which aligns with AWS security best practices.
問題 #13
A company runs critical workloads in an on-premises data center. The company wants to implement an AWS based disaster recovery (DR) solution that will achieve an RTO of less than 1 hour. The company needs to continuously replicate physical and virtual servers. The company must optimize costs for data storage and bandwidth usage. The DR solution must be automated.
Which solution will meet these requirements?
答案：D
解題說明：
AWS Elastic Disaster Recovery (AWS DRS)is purpose-built for continuously replicatingphysical and virtual serversinto AWS with low RTO/RPO. It uses lightweight replication agents to stream block-level changes to a low-coststaging areain AWS, which helps optimize storage costs (only the staging resources run continuously) and reduces bandwidth usage through efficient replication mechanisms. In a disaster or test, AWS DRS can automatically launch recovery instances in AWS based on a defined blueprint (instance types, networking, security groups), enabling rapid failover workflows that commonly meetsub-hour RTOobjectives.
Option A is not the intended service model: AWS Backup protects AWS-native resources and does not
"directly replicate" arbitrary on-prem servers as a continuous replication DR system. Option B (Storage Gateway Volume Gateway) can support backups of certain storage use cases via snapshots, but it is not a general continuous replication solution for diverse physical/virtual servers and may not meet the RTO requirement as directly as AWS DRS. Option D (Direct Connect + custom automation) can help with connectivity, but it does not provide continuous server replication by itself and would require significant custom engineering and ongoing operational effort.
Therefore, enabling AWS Elastic Disaster Recovery and configuring replication agents is the best automated, cost-optimized solution.
問題 #14
A company has AWS accounts in an organization in AWS Organizations. An Amazon S3 bucket in one account is publicly accessible. A security engineer must remove public access and ensure the bucket cannot be made public again. Which solution will meet these requirements?
答案：B
解題說明：
Amazon S3 Block Public Access provides centralized controls to prevent public access through bucket policies and ACLs. AWS Certified Security - Specialty guidance recommends enabling Block Public Access to reduce accidental exposure and to enforce guardrails that override public grants. Enabling Block Public Access on the bucket removes current public exposure when combined with correcting policies/ACLs and prevents future misconfiguration. To ensure the bucket cannot be made public again, the security engineer must prevent principals from disabling Block Public Access. An SCP that denies s3:PutPublicAccessBlock prevents changes that would remove or weaken the PublicAccessBlock configuration, enforcing the guardrail across the OU or account. Options A and D do not directly address public exposure control. Option B denies object reads but does not ensure public access cannot be re-enabled; it also does not address the root misconfiguration pathways and could disrupt legitimate access patterns. Option C specifically combines the correct preventive control (PublicAccessBlock) with organizational enforcement to stop future reversal.
問題 #15
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