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| Certification Vendor: | Amazon Web Services (AWS) |
|---|---|
| Exam Name: | AWS Certified Security - Specialty |
| Exam Number: | SCS-C03 |
| Exam Duration: | 170 minutes |
| Available Languages: | Simplified Chinese, Korean, Spanish (Latin American), Japanese, English |
| Certificate Validity Period: | 3 years |
| Passing Score: | 720/1000 |
| Exam Price: | $300 USD |
| Real Exam Qty: | 65 |
| Related Certifications: | AWS Certified Cloud Practitioner AWS Certified Solutions Architect - Associate |
| Exam Format: | Multiple Choice, Multiple Response |
| Sample Questions: | Amazon SCS-C03 Sample Questions |
| Exam Way: | Online proctored (PSI) or in-person testing center (Pearson VUE) |
| Pre Condition: | Recommended: AWS Certified Cloud Practitioner or Associate-level certification, minimum 2 years of hands-on AWS security experience |
| Official Syllabus URL: | https://docs.aws.amazon.com/certificates/security-specialty |
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질문 # 37
AWS Config cannot deliver configuration snapshots to Amazon S3.
Which TWO actions will remediate this issue?
정답:A,E
설명:
AWS Config requires permissions at two levels to deliver configuration data: the AWS Config service role and the S3 bucket policy. The AWS Certified Security - Specialty Study Guide states that the S3 bucket policy must explicitly allow the config.amazonaws.com service principal to write objects. Additionally, the IAM role used by AWS Config must allow s3:GetBucketAcl and s3:PutObject.
If either permission is missing, AWS Config cannot deliver snapshots and will log delivery errors in CloudTrail. This dual-permission model ensures least privilege while maintaining secure delivery of compliance data.
Other options reference incorrect principals or irrelevant permissions.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS Config Prerequisites
질문 # 38
A company wants to improve the remediation of specific security incidents. Currently, a security engineer performs network isolation manually if traffic from Amazon EC2 instances to known command and control servers is detected. The manual network isolation process is error prone. The security engineer must automate the process.
The security engineer enables Amazon GuardDuty. The security engineer configures instances to be managed by AWS Systems Manager. The security engineer prepares a Systems Manager Automation document to change security groups on selected instances.
Which solution will meet these requirements?
정답:B
설명:
Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security - Specialty topics:
GuardDuty publishes findings to EventBridge, which can trigger automated incident workflows. Systems Manager OpsCenter centralizes operational items and integrates with EventBridge, allowing GuardDuty findings to be transformed into OpsItems and linked with Systems Manager Automation runbooks for remediation. Since the company already has Systems Manager managed instances and an Automation document that changes security groups, routing GuardDuty command-and-control findings through EventBridge to OpsCenter is the cleanest automated remediation path. Amazon Detective supports investigation, not remediation execution. AWS Config evaluates configuration compliance, not live network behavior to known C2 destinations. Security Hub CSPM aggregates and normalizes security findings, but NIST control scans do not directly detect GuardDuty C2 traffic or automatically run the prepared isolation document.
질문 # 39
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?
정답:C
설명:
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.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
Elastic Load Balancing Architecture
Network Load Balancer Performance Characteristics
질문 # 40
A company runs an application outside of AWS. The external application authenticates to AWS as an IAM user. A security engineer needs to migrate the external application to use an IAM role.
The company's human users already use IAM roles with AWS IAM Identity Center.
Which solution will give the external application the ability to use an IAM role?
정답:C
설명:
IAM Roles Anywhere is built for workloads that run outside AWS and need temporary AWS credentials through IAM roles. It uses X.509 certificates, a trust anchor, profiles, and role trust policies so external servers, containers, or applications can obtain short-lived credentials without IAM user access keys. AWS also provides a credential helper that external applications can use with SDK credential_process integration. IAM Identity Center is primarily for workforce access and managed applications, not non-human workload authentication. AWS Verified Access controls access to applications, not AWS role assumption for external workloads. Generic SAML federation can work for identity providers, but this question asks for an external application replacing IAM user credentials, which is exactly the IAM Roles Anywhere use case.
질문 # 41
An IAM user receives an Access Denied message when the user attempts to access objects in an Amazon S3 bucket. The user and the S3 bucket are in the same AWS account. The S3 bucket is configured to use server- side encryption with AWS KMS keys (SSE-KMS) to encrypt all of its objects at rest by using a customer managed key from the same AWS account. The S3 bucket has no bucket policy defined. The IAM user has been granted permissions through an IAM policy that allows thekms:Decryptpermission to the customer managed key. The IAM policy also allows thes3:List* ands3:Get* permissions for the S3 bucket and its objects.
Which of the following is a possible reason that the IAM user cannot access the objects in the S3 bucket?
정답:A
설명:
WithSSE-KMS, authorization is a two-part check: the caller must have S3 permissions to read the objectandthe caller must be allowed to use the KMS key for decryption. Even if an IAM policy grants kms:
Decrypt, the request will still fail if theKMS key policydoes not allow the principal (or does not allow the account to delegate use of the key). KMS key policies are authoritative: they can prevent key usage even when IAM policies appear to allow it.
A common misconfiguration is editing the key policy and removing the statement that grants the AWS account (or key administrators) the ability to manage and delegate permissions for the key-often described as removing "Enable IAM user permissions" or otherwise blocking the account from using IAM policies to authorize key usage. In that case, the IAM user's kms:Decrypt permission in IAM is not sufficient because the key policy no longer permits it, resulting in Access Denied when S3 attempts to call KMS on the user's behalf during GetObject.
Option A is not required for decrypting data (DescribeKey is useful for discovery but not necessary for GetObject). Option B would not inherently cause access denied if permissions align. Option C is incorrect because same-account S3 access can be granted purely via IAM without a bucket policy. Therefore, the key policy change is a valid reason.
질문 # 42
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