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Amazon SCS-C03 Exam Syllabus Topics:

Topic	Details
Topic 1	Incident Response: This domain addresses responding to security incidents through automated and manual strategies, containment, forensic analysis, and recovery procedures to minimize impact and restore operations.
Topic 2	Security Foundations and Governance: This domain addresses foundational security practices including policies, compliance frameworks, risk management, security automation, and audit procedures for AWS environments.
Topic 3	Detection: This domain covers identifying and monitoring security events, threats, and vulnerabilities in AWS through logging, monitoring, and alerting mechanisms to detect anomalies and unauthorized access.
Topic 4	Data Protection: This domain centers on protecting data at rest and in transit through encryption, key management, data classification, secure storage, and backup mechanisms.
Topic 5	Identity and Access Management: This domain deals with controlling authentication and authorization through user identity management, role-based access, federation, and implementing least privilege principles.

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Complete Reliable SCS-C03 Exam Voucher | Easy To Study and Pass Exam at first attempt & Correct SCS-C03: AWS Certified Security - Specialty

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Amazon AWS Certified Security - Specialty Sample Questions (Q214-Q219):

NEW QUESTION # 214
A company has a web-based application that runs behind an Application Load Balancer (ALB).
The application is experiencing a credential stuffing attack that is producing many failed login attempts. The attack is coming from many IP addresses. The login attempts are using a user agent string of a known mobile device emulator. A security engineer needs to implement a solution to mitigate the credential stuffing attack. The solution must still allow legitimate logins to the application.
Which solution will meet these requirements?

A. Create an Amazon CloudWatch alarm that reacts to login attempts that contain the specified user agent string. Add an Amazon Simple Notification Service (Amazon SNS) topic to the alarm.
B. Create an AWS WAF web ACL for the ALB. Create a custom rule that allows requests from legitimate user agent strings.
C. Create an AWS WAF web ACL for the ALB. Create a custom rule that blocks requests that contain the user agent string of the device emulator.
D. Modify the inbound security group on the ALB to deny traffic from the IP addresses that are involved in the attack.

Answer: C

Explanation:
A credential stuffing attack at the ALB is aLayer 7problem and is best mitigated withAWS WAF.
The attacker is distributed across many IPs, so blocking by IP in a security group (Option B) is ineffective and operationally heavy. A CloudWatch alarm (Option A) only alerts; it does not block or mitigate requests.
Because the malicious traffic uses a distinctive, knownUser-Agentstring associated with a mobile device emulator, AWS WAF can quickly reduce the attack by inspecting the User-Agent header and blocking matching requests. This approach is targeted: it blocks the identified automated attack pattern while allowing legitimate users who do not present that emulator User-Agent to continue logging in. The WAF rule can be deployed immediately on the existing ALB-associated web ACL and can be further refined (for example, applied only to /login paths, combined with rate-based rules, or integrated with Bot Control) to minimize false positives.

NEW QUESTION # 215
A company's security engineer receives an alert that indicates that an unexpected principal is accessing a company-owned Amazon Simple Queue Service (Amazon SQS) queue. All the company's accounts are within an organization in AWS Organizations. The security engineer must implement a mitigation solution that minimizes compliance violations and investment in tools that are outside of AWS. What should the security engineer do to meet these requirements?

A. In all the VPCs in the organization, adjust the network ACLs to only accept inbound traffic from the CIDR blocks of all the VPCs in the organization. Attach the network ACLs to all the subnets in all the VPCs in the organization.
B. Create security groups that only accept inbound traffic from the CIDR blocks of all the VPCs in the organization. Attach the security groups to all the SQS queues in all the VPCs in the organization.
C. Use a cloud access security broker (CASB) to maintain a list of managed resources. Configure the CASB to check the API and console access against that list on a web proxy.
D. Create interface VPC endpoints for Amazon SQS in all the VPCs in the organization. Set the aws:SourceVpce condition to the VPC endpoint identifier on the SQS policy. Add the aws:PrincipalOrgId condition to the VPC endpoint policy.

Answer: D

Explanation:
Amazon SQS is an AWS-managed service and does not operate within customer VPCs.
Therefore, security groups and network ACLs cannot be used to control access to SQS, making options A and B invalid. According to AWS Certified Security - Specialty documentation, the recommended approach to securely access AWS services from within a VPC is through interface VPC endpoints (AWS PrivateLink).
By creating interface VPC endpoints for Amazon SQS, the company ensures that traffic to SQS stays within the AWS network and does not traverse the public internet. Adding an SQS resource policy with the aws:SourceVpce condition restricts access so that only requests originating from the specified VPC endpoint are allowed. Additionally, using the aws:PrincipalOrgId condition ensures that only principals belonging to the same AWS Organization can access the queue.
Option D introduces an external tool, increasing cost and compliance complexity, which directly violates the requirement to minimize investment outside AWS.
AWS documentation clearly identifies VPC endpoints combined with IAM condition keys as a best practice for securing service access in multi-account environments.

NEW QUESTION # 216
A company wants to remove all SSH keys permanently from a specific subset of its Amazon Linux 2 Amazon EC2 instances that are using the same IAM instance profile. However, three individuals who have IAM user accounts will need to access these instances by using an SSH session to perform critical duties.
How can a security engineer provide the access to meet these requirements?

A. Assign an IAM policy to the instance profile to allow the EC2 instances to be managed by AWS Systems Manager. Provide the IAM user accounts with permission to use Systems Manager. Remove the SSH keys from the EC2 instances. Use Systems Manager Session Manager to select the EC2 instance and connect.
B. Assign an IAM policy to the instance profile to allow the EC2 instances to be managed by AWS Systems Manager. Provide the IAM user accounts with permission to use Systems Manager. Remove the SSH keys from the EC2 instances. Use Systems Manager Inventory to select the EC2 instance and connect.
C. Assign an IAM policy to the IAM user accounts to provide permission to use the EC2 service in the AWS Management Console. Remove the SSH keys from the EC2 instances. Connect to the EC2 instance as the ec2-user through the AWS Management Console's EC2 SSH client method.
D. Assign an IAM policy to the IAM user accounts to provide permission to use AWS Systems Manager Run Command. Remove the SSH keys from the EC2 instances. Use Run Command to open an SSH connection to the EC2 instance.

Answer: A

Explanation:
Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security - Specialty topics:
Systems Manager Session Manager is the correct replacement for SSH key-based access. Session Manager allows authorized users to connect to managed EC2 instances through the browser or AWS CLI without providing SSH keys. The EC2 instances must be managed nodes, which requires the Systems Manager Agent and an instance profile with Systems Manager permissions such as AmazonSSMManagedInstanceCore. The individual IAM users must also have permissions to start sessions. Systems Manager Inventory only collects software and configuration inventory; it does not provide interactive shell access. Run Command executes commands remotely but does not open an SSH session. The EC2 console SSH client still depends on SSH- style access patterns and does not meet the requirement to remove SSH keys permanently.

NEW QUESTION # 217
A company's security policy requires all Amazon EC2 instances to use the Amazon Time Sync Service. AWS CloudTrail trails are enabled in all of the company's AWS accounts. VPC Flow Logs are enabled for all VPCs.
A security engineer must identify any EC2 instances that attempt to use Network Time Protocol (NTP) servers on the internet.
Which solution will meet these requirements?

A. Monitor VPC Flow Logs for traffic to non-standard time servers.
B. Monitor CloudTrail logs for API calls to the Amazon Time Sync Service.
C. Monitor CloudTrail logs for API calls to non-standard time servers.
D. Monitor VPC Flow Logs for traffic to the Amazon Time Sync Service.

Answer: A

Explanation:
Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security - Specialty topics:
NTP traffic is network traffic, not an AWS API call. CloudTrail records AWS API activity, so it cannot identify an EC2 instance contacting an external NTP server on UDP port 123. VPC Flow Logs capture information about IP traffic going to and from network interfaces in a VPC, including source, destination, protocol, ports, and accept/reject status. Therefore, the correct approach is to analyze VPC Flow Logs for outbound NTP traffic to destinations other than the Amazon Time Sync Service. Monitoring traffic to the Amazon Time Sync Service would show compliant behavior, not violations. This is a detection-control question: use CloudTrail for API activity and VPC Flow Logs for network-level traffic visibility.

NEW QUESTION # 218
A company has a large fleet of Amazon Linux 2 Amazon EC2 instances that run an application.
The application processes sensitive data and has the following compliance requirements:
- No remote access management ports to the EC2 instances can be exposed internally or externally.
- All remote session activity must be recorded in an audit log.
- All remote access to the EC2 instances must be authenticated and
authorized by AWS IAM Identity Center.
The company's DevOps team occasionally needs to connect to one of the EC2 instances to troubleshoot issues.
Which solution will provide remote access to the EC2 instances while meeting the compliance requirements?

A. Grant access to the EC2 serial console at the account level.
B. Use AWS Systems Manager Automation runbooks to open remote access ports.
C. Enable EC2 Instance Connect and configure security group rules.
D. Assign an EC2 instance role that allows access to AWS Systems Manager. Create an IAM policy that grants access to Systems Manager Session Manager. Assign the policy to an IAM role of the DevOps team.

Answer: D

Explanation:
AWS Systems Manager Session Manager provides secure, auditable, and portless access to EC2 instances. According to the AWS Certified Security - Specialty Study Guide, Session Manager allows administrators to connect to instances without opening inbound SSH or RDP ports, fully satisfying strict compliance requirements.
Session Manager integrates directly with AWS IAM Identity Center, ensuring that all access is authenticated and authorized using centralized identity management. Additionally, Session Manager automatically records session activity and can send logs to Amazon CloudWatch Logs or Amazon S3, providing a complete audit trail of all commands executed during a session.

NEW QUESTION # 219
......

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