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Amazon SCS-C03 Exam Syllabus Topics:

SectionWeightObjectives
Identity and Access Management16%- AWS IAM fundamentals
  • 1. Users, groups, roles, and policies
    • 2. Least privilege access design
      - Federation and access control
      • 1. Federated identity with SAML/OIDC
        • 2. IAM Identity Center (SSO)
          Threat Detection and Incident Response14%- Detection mechanisms
          • 1. AWS Security Hub findings aggregation
            • 2. Amazon GuardDuty threat detection
              - Incident response procedures
              • 1. Identify and investigate security incidents in AWS environments
                • 2. Automate response using AWS services (Lambda, CloudWatch, EventBridge)
                  Infrastructure Security20%- Compute security
                  • 1. EC2 instance hardening
                    • 2. Container security (ECS/EKS basics)
                      - Network security
                      • 1. VPC design and segmentation
                        • 2. Security groups and NACLs
                          Data Protection18%- Data security services
                          • 1. Amazon S3 security controls
                            • 2. Secrets Manager and Parameter Store
                              - Encryption and key management
                              • 1. AWS KMS key management
                                • 2. Encryption at rest and in transit
                                  Logging and Monitoring18%- Monitoring and alerting
                                  • 1. Amazon CloudWatch metrics and alarms
                                    • 2. Centralized security monitoring strategies
                                      - Audit logging
                                      • 1. AWS CloudTrail logging and analysis
                                        • 2. AWS Config configuration tracking
                                          Management, Governance and Compliance14%- Compliance and auditing
                                          • 1. Security best practices alignment (CIS, NIST)
                                            • 2. AWS Artifact compliance reports
                                              - Governance frameworks
                                              • 1. Multi-account security strategy
                                                • 2. AWS Organizations and SCPs

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                                                  Amazon AWS Certified Security - Specialty Sample Questions (Q147-Q152):

                                                  NEW QUESTION # 147
                                                  A security engineer received an Amazon GuardDuty alert indicating a finding involving the Amazon EC2 instance that hosts the company ' s primary website. The GuardDuty finding received read:
                                                  UnauthorizedAccess:IAMUser/InstanceCredentialExfiltration. The security engineer confirmed that a malicious actor used API access keys intended for the EC2 instance from a country where the company does not operate. The security engineer needs to deny access to the malicious actor.
                                                  What is the first step the security engineer should take?

                                                  Answer: B

                                                  Explanation:
                                                  The findingInstanceCredentialExfiltrationindicates that credentials available to the EC2 instance (from the instance profile / IMDS) were likely stolen and then used from an unusual location. The fastest way todeny the malicious actor immediatelyis to invalidate the stolen, currently usable credentials. Because these aretemporary credentialsissued to the instance profile role, the correct first containment action is torevoke active sessionsfor that role so the stolen session credentials stop working. This directly blocks continued API use while you continue investigation and remediation.
                                                  Changing security groups (Option A) affects inbound network access to the website but does not stop an attacker from using stolen API credentials against AWS APIs. Installing agents and running assessments (Options B and C) are investigative steps that take time and do not immediately cut off the attacker's current access. After revoking sessions, best practice incident response typically continues with additional containment and eradication steps such as rotating credentials, reviewing CloudTrail for actions taken, checking for persistence (new IAM users/keys, modified policies), patching the instance, and restricting IMDS (for example, enforcing IMDSv2) to reduce risk of further credential theft.


                                                  NEW QUESTION # 148
                                                  A company hosts a web application on an Apache web server. The application runs on Amazon EC2 instances that are in an Auto Scaling group. The company configured the EC2 instances to send the Apache web server logs to an Amazon CloudWatch Logs group that the company has configured to expire after 1 year.
                                                  Recently, the company discovered in the Apache web server logs that a specific IP address is sending suspicious requests to the web application. A security engineer wants to analyze the past week of Apache web server logs to determine how many requests that the IP address sent and the corresponding URLs that the IP address requested.
                                                  What should the security engineer do to meet these requirements with the LEAST effort?

                                                  Answer: C

                                                  Explanation:
                                                  CloudWatch Logs Insights is built to interactively search and analyze log data that is already stored in CloudWatch Logs. The Apache logs are already in a CloudWatch log group, so the least-effort solution is to run a Logs Insights query over the previous week, filter for the suspicious IP address, parse or display the requested URL field, and use stats to count requests. Exporting logs to S3, crawling with Glue, or streaming to OpenSearch introduces extra services, delay, and operational overhead. Macie is for sensitive data discovery in S3, not log query analytics. Logs Insights directly supports filtering, parsing, aggregation, and display for this exact investigation use case.


                                                  NEW QUESTION # 149
                                                  CloudFormation stack deployments fail for some users due to permission inconsistencies. Which combination of steps will ensure consistent deployments MOST securely? (Select THREE.)

                                                  Answer: A,D,F

                                                  Explanation:
                                                  AWS best practices require CloudFormation to assume a dedicated service role. This ensures consistent permissions regardless of the user. Users must have iam:PassRole permission to pass the role. Updating stacks to use the service role enforces uniform deployment behavior.


                                                  NEW QUESTION # 150
                                                  A company's application team wants to replace an internal application with a new AWS architecture that consists of Amazon EC2 instances, an AWS Lambda function, and an Amazon S3 bucket in a single AWS Region. After an architecture review, the security team mandates that no application network traffic can traverse the public internet at any point. The security team already has an SCP in place for the company's organization in AWS Organizations to restrict the creation of internet gateways, NAT gateways, and egress-only gateways.
                                                  Which combination of steps should the application team take to meet these requirements?
                                                  (Choose Three.)

                                                  Answer: A,B,D

                                                  Explanation:
                                                  To keep application traffic off the public internet, EC2 and Lambda resources must reach S3 through private VPC networking. An S3 gateway endpoint provides private access from the VPC to S3 without using an internet gateway or NAT gateway. An S3 access point can also be restricted to VPC origin so S3 rejects requests that do not originate from the configured VPC path. The Lambda function must run inside the VPC so its S3 traffic can use the private endpoint path. Lambda "block public access" is not the relevant S3 network control. Security groups cannot target S3 gateway endpoints or S3 access points as destination resources in the way the distractors describe.


                                                  NEW QUESTION # 151
                                                  A security engineer needs to protect a public web application that runs in a VPC. The VPC hosts the origin for an Amazon CloudFront distribution. The application has experienced multiple layer 7 DDoS attacks. An AWS WAF web ACL is associated with the CloudFront distribution. The web ACL contains one AWS managed rule to protect against known IP addresses that have bad reputations.
                                                  The security engineer must configure an automated solution that detects and mitigates layer 7 DDoS attacks in real time with no manual effort.
                                                  Which solution will meet these requirements?

                                                  Answer: C

                                                  Explanation:
                                                  Option D is the correct solution because it provides fully automated, real-time detection and mitigation of application-layer (Layer 7) DDoS attacks with no manual intervention. AWS Shield Advanced includes automatic application layer DDoS mitigation when it is enabled for supported resources such as Amazon CloudFront distributions. This feature continuously monitors traffic patterns and, when an attack is detected, automatically deploys AWS WAF rules to mitigate malicious requests.
                                                  Adding a rate-based rule to the AWS WAF web ACL further strengthens protection by automatically blocking IP addresses that exceed a defined request threshold, which is a common characteristic of Layer 7 DDoS attacks. This combination aligns directly with AWS best practices for protecting web applications against volumetric and application-layer threats.


                                                  NEW QUESTION # 152
                                                  ......

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