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| Certification Vendor: | Amazon Web Services (AWS) |
|---|---|
| Exam Name: | AWS Certified Security - Specialty (SCS-C03) |
| Exam Number: | SCS-C03 |
| Related Certifications: | AWS Certified Solutions Architect - Professional AWS Certified DevOps Engineer - Professional AWS Certified SysOps Administrator - Associate AWS Certified Advanced Networking - Specialty AWS Certified Solutions Architect - Associate |
| Available Languages: | Simplified Chinese, Korean, English, Japanese |
| Passing Score: | 750 (scaled score out of 1000) |
| Exam Price: | $300 USD |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple choice, Multiple response |
| Exam Duration: | 170 minutes |
| Real Exam Qty: | 65 (multiple choice and multiple response) |
| Recommended Training: | AWS Certified Security - Specialty Exam Prep AWS Skill Builder - Security Learning Path |
| Exam Registration: | AWS Certification Official Registration AWS Certification Portal |
| Sample Questions: | Amazon SCS-C03 Sample Questions |
| Exam Way: | Online proctored or testing center (onsite) |
| Pre Condition: | No mandatory prerequisite, but recommended experience: 5+ years in IT security and 2+ years securing AWS workloads |
| Official Syllabus URL: | https://aws.amazon.com/certification/certified-security-specialty/ |
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NEW QUESTION # 168
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 Amazon GuardDuty and integrates it with AWS Security Hub. The security engineer needs to implement anautomated solutionto detect and respond to anomalous traffic patterns. The solution must follow AWS best practices forinitial incident responseand mustminimize disruptionto the web application.
Which solution will meet these requirements?
Answer: A
Explanation:
AWS incident response best practices emphasizecontainment with minimal blast radiuswhile preserving business continuity. According to the AWS Certified Security - Specialty Official Study Guide, isolating a compromised resource while allowing the application to continue operating is the recommended initial response.
By creating an Amazon EventBridge rule that reacts to GuardDuty anomalous traffic findings and invokes an AWS Lambda function, the security engineer can automaticallyremove the affected EC2 instance from the Auto Scaling groupand attach arestricted security group. This immediately stops malicious activity while allowing Auto Scaling to replace the instance and keep the application available.
Option A is inappropriate because EC2 instance profiles do not use long-term access keys. Option C applies subnet-wide changes that could disrupt unrelated workloads. Option D provides notification only and does not meet the automated response requirement.
AWS documentation explicitly identifiesinstance isolation via security groupsas a preferred containment technique that preserves application availability and forensic integrity.
* AWS Certified Security - Specialty Official Study Guide
* Amazon GuardDuty User Guide
* AWS Incident Response Best Practices
NEW QUESTION # 169
A company is storing data in Amazon S3 Glacier. A security engineer implemented a new vault lock policy for 10 TB of data and called the initiate-vault-lock operation 12 hours ago. The audit team identified a typo in the policy that is allowing unintended access to the vault.
What is the MOST cost-effective way to correct this error?
Answer: D
Explanation:
Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security - Specialty topics:
Amazon S3 Glacier Vault Lock has a 24-hour in-progress period after initiate-vault-lock is called. During this period, the lock is not yet immutable, and AWS allows the vault lock process to be aborted. Since the security engineer discovered the typo only 12 hours after initiation, the most cost-effective correction is to abort the current vault lock, fix the policy, and initiate the vault lock process again. Copying 10 TB of data to a new location is unnecessary, expensive, and operationally wasteful. Updating the policy without aborting does not correctly resolve a vault lock policy in progress. Once the lock is completed, the policy becomes immutable, so action must be taken before completion.
NEW QUESTION # 170
A development team is creating an open source toolset to manage a company's software as a service (SaaS) application. The company stores the code in a public repository so that anyone can view and download the toolset's code. The company discovers that the code contains an IAM access key and secret key that provide access to internal resources in the company's AWS environment. A security engineer must implement a solution to identify whether unauthorized usage of the exposed credentials has occurred. The solution also must prevent any additional usage of the exposed credentials.
Which combination of steps will meet these requirements? (Choose two.)
Answer: A,B
Explanation:
The immediate containment step for exposed access keys is todisable (deactivate) the compromised IAM access key(Option B). This prevents any further use of the leaked credentials, which is essential once secrets are publicly exposed. Creating a new key (Option D) may be part of recovery later, but it does not stop abuse of the already exposed key unless the exposed key is first deactivated.
To determine whether the credentials were used, you need evidence of access activity. Among the provided options, the best fit is generating and reviewing theIAM credential report(Option E).
The report includes metadata such as access key status and "last used" style details that help triage whether the user's credentials have been exercised recently. While deeper investigation would typically rely on CloudTrail "AccessKeyId" searches, the credential report is a quick AWS- native step aligned to the answer choices.
NEW QUESTION # 171
A company runs a public web application on an Amazon EKS cluster. The company uses an Amazon CloudFront distribution to deploy the application. An Application Load Balancer (ALB) is configured as an origin for the distribution.
A security engineer needs to implement a monitoring solution that sends notifications to an existing Amazon SNS topic. The solution must send a notification to the SNS topic when the application receives 10,000 requests from the same end-user IP address during any 5-minute period.
Which solution will meet these requirements?
Answer: D
Explanation:
AWS WAF rate-based rules are specifically designed to count requests by aggregation keys such as source IP address and apply an action when the count exceeds the configured limit during the evaluation window. A 5-minute window is the default and supported evaluation period. Because the application is delivered through CloudFront, the web ACL should be associated with the CloudFront distribution so requests are evaluated at the edge before reaching the ALB and EKS workload. CloudWatch metrics for the WAF rule can drive an alarm that notifies the SNS topic.
CloudFront logs or VPC Flow Logs would require delayed log processing and custom counting.
ASN matching does not count requests by individual end-user IP address.
NEW QUESTION # 172
A company has multiple accounts in the AWS Cloud. Users in the developer account need to have access to specific resources in the production account.
What is the MOST secure way to provide this access?
Answer: B
Explanation:
The most secure and AWS-recommended pattern for cross-account access is to create anIAM role in the target account (production)and allow trusted principals from the source account (developer) toassume the roleby using AWS STS. This avoids long-term credentials in the production account, supports short-lived session credentials, and enables strong controls such as MFA requirements, session duration limits, and precise least-privilege permissions attached to the role. It also centralizes ownership of production permissions in the production account, which is important for separation of duties and governance.
NEW QUESTION # 173
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