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NEW QUESTION # 124
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?
Answer: C
Explanation:
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.
NEW QUESTION # 125
A company uses an organization in AWS Organizations to manage multiple AWS accounts. A security engineer creates a WAF policy in AWS Firewall Manager in the us-east-1 Region. The security engineer sets the policy scope to apply to resources that are tagged withWAF- protected:truein one of the member accounts in the organization. The security engineer sets up a configuration to automatically remediate any noncompliant resources.
In a member account, the security engineer attempts to protect an Amazon API Gateway REST API in the us-east-1 Region by using a web ACL. However, after several minutes, the REST API is still not associated with the web ACL.
What is the likely cause of this issue?
Answer: A
Explanation:
AWS Firewall Manager applies and enforces AWS WAF protections based on thepolicy scopeyou define. In this scenario, the policy is explicitly scoped toonlythose resources that have the tag keyWAF-protectedwith a value oftrue. If the API Gateway REST API does not have that exact tag (correct key, correct value, correct spelling/case), Firewall Manager will treat the resource asout of scope. Out-of-scope resources are not evaluated for compliance and are not remediated, so the expected automatic association of the web ACL will never occur.
This is the most common reason for "nothing happens" when Firewall Manager is configured with tag-based scoping: the resource is missing the tag, the value is different (for example "True" vs
"true"), or the tag was applied to a different resource than the one Firewall Manager evaluates.
NEW QUESTION # 126
A healthcare company stores more than 1 million patient records in an Amazon S3 bucket. The patient records include personally identifiable information (PII). The S3 bucket contains hundreds of terabytes of data.
A security engineer receives an alert that was triggered by an Amazon GuardDuty Exfiltration:S3
/AnomalousBehavior finding. The security engineer confirms that an attacker is using temporary credentials that were obtained from a compromised Amazon EC2 instance that has s3:GetObject permissions for the S3 bucket. The attacker has begun downloading the contents of the bucket. The security engineer contacts a development team. The development team will require 4 hours to implement and deploy a fix.
The security engineer must take immediate action to prevent the attacker from downloading more data from the S3 bucket.
Which solution will meet this requirement?
Answer: B
Explanation:
Amazon GuardDuty Exfiltration:S3/AnomalousBehavior findings indicate that S3 data access patterns are consistent with data exfiltration. In this scenario, the attacker is usingtemporary credentials obtained from an EC2 instance profile, which are issued by AWS Security Token Service (STS).
According to AWS Certified Security - Specialty documentation, thefastest and most targeted remediation is to revoke the temporary session credentials associated with the compromised instance profile. This can be accomplished by removing or modifying the IAM role permissions, detaching the instance profile, or stopping the instance, which immediately invalidates the temporary credentials and prevents further S3 access.
Option B may limit outbound traffic but does not invalidate already issued credentials. Option C is a detection and classification service and does not prevent active exfiltration. Option D would block all access to the bucket, including legitimate access, and is considered overly disruptive for incident containment.
AWS incident response best practices emphasizecredential revocation as the first containment stepwhen compromise of temporary credentials is confirmed.
* AWS Certified Security - Specialty Official Study Guide
* Amazon GuardDuty User Guide - S3 Protection
* AWS STS and IAM Role Security Documentation
* AWS Incident Response Best Practices
NEW QUESTION # 127
A company is running an application on Amazon EC2 instances in an Auto Scaling group. The application stores logs locally. A security engineer noticed that logs were lost after a scale-in event. The security engineer needs to recommend a solution to ensure the durability and availability of log data. All logs must be kept for a minimum of 1 year for auditing purposes.
What should the security engineer recommend?
Answer: B
Explanation:
In an Auto Scaling group, instances are ephemeral--local disks and instance-level log files can disappear during scale-in or replacement. The most durable, operationally simple pattern is tostream logs off-host continuouslyto a managed log service. Installing and configuring theCloudWatch agent(or unified agent) to ship application logs toAmazon CloudWatch Logsensures logs are centralized and remain available regardless of instance lifecycle events.
This directly solves the "logs lost after scale-in" problem and provides high availability for audit and investigation.
CloudWatch Logs also supports retention controls. The security engineer can set the log group retention toat least 1 year(or longer), meeting the audit requirement without building custom storage workflows. Access can be controlled with IAM to restrict who can view or export logs, and CloudWatch logs can be further integrated with Athena/OpenSearch/SIEM tools if needed.
NEW QUESTION # 128
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?
Answer: C
Explanation:
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.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS Organizations Service Control Policies
AWS CloudTrail Authorization Failure Analysis
NEW QUESTION # 129
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