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NEW QUESTION # 41
A company uses Amazon EC2 instances to host frontend services behind an Application Load Balancer.
Amazon Elastic Block Store (Amazon EBS) volumes are attached to the EC2 instances. The company uses Amazon S3 buckets to store large files for images and music. The company has implemented a security architecture on AWS to prevent, identify, and isolate potential ransomware attacks. The company now wants to further reduce risk. A security engineer must develop a disaster recovery solution that can recover to normal operations if an attacker bypasses preventive and detective controls. The solution must meet an RPO of1 hour.
Which solution will meet these requirements?
Answer: D
Explanation:
An RPO of1 hourmeans the company must be able to restore data with at most60 minutes of loss. Option A directly meets this by usingAWS Backupto takehourly backupsof both the compute layer (EC2) and the data layer (S3). AWS Backup provides centralized policy-based scheduling, retention, and (when configured) immutable protections such as Backup Vault Lock to help defend backups from tampering-important in ransomware recovery scenarios. Backing up the S3 buckets hourly also addresses recovery of critical objects such as images and music that users rely on.
In addition, recovery to "normal operations" is not only about data restoration; it also requires rapidly re- creating infrastructure reliably. UsingAWS CloudFormation templatesstored in aversion-controlled Git repositorysupports consistent, repeatable rebuilds of the ALB, EC2 fleet configuration, IAM roles, security groups, and related components. This infrastructure-as-code approach reduces human error under incident pressure and accelerates disaster recovery execution.
Option B fails the RPO because daily backups can lose up to 24 hours of data. Option C focuses on logging
/governance rather than backups and does not establish a 1-hour recovery point. Option D also fails the RPO (4-hour snapshots) and is reactive to a specific finding type rather than a comprehensive DR plan for EC2 and S3.
NEW QUESTION # 42
A company that uses AWS Organizations is using AWS IAM Identity Center to administer access to AWS accounts. A security engineer is creating a custom permission set in IAM Identity Center.
The company will use the permission set across multiple accounts. An AWS managed policy and a customer managed policy are attached to the permission set. The security engineer has full administrative permissions and is operating in the management account.
When the security engineer attempts to assign the permission set to an IAM Identity Center user who has access to multiple accounts, the assignment fails.
What should the security engineer do to resolve this failure?
Answer: A
Explanation:
AWS IAM Identity Center permission sets that include customer managed policies require those policies to exist in each target account. According to the AWS Certified Security - Specialty Study Guide, customer managed policies are account-scoped and are not automatically propagated across accounts by Identity Center.
When assigning a permission set across multiple accounts, Identity Center attempts to attach the referenced customer managed policy in each account. If the policy does not exist, the assignment fails. Creating the same customer managed policy with identical name and permissions in every target account resolves the issue.
Option B increases complexity. Option C does not address the root cause. Option D violates Identity Center management best practices.
AWS documentation clearly states that customer managed policies must be present in all accounts where permission sets are applied.
NEW QUESTION # 43
A security engineer needs to implement a solution to create and control the keys that a company uses for cryptographic operations. The security engineer must create symmetric keys in which the key material is generated and used within a custom key store that is backed by an AWS CloudHSM cluster. The security engineer will use symmetric and asymmetric data key pairs for local use within applications. The security engineer also must audit the use of the keys.
How can the security engineer meet these requirements?
Answer: C
Explanation:
The requirement is to havekey material generated and used inside a custom key store backed by an AWS CloudHSM cluster. This is exactly whatAWS KMS Custom Key Storesprovide: KMS manages the keys and policies, but the cryptographic operations for those KMS keys occur in the associatedCloudHSMcluster, keeping the key material within HSM boundaries. For applications that needlocal-use data keys(both symmetric data keys and asymmetric data key pairs), KMS supports generating data keys and data key pairs that applications can use for envelope encryption and local cryptographic operations, while the master key protections remain within KMS (and within CloudHSM when using a custom key store).
For auditing, AWS best practice isAWS CloudTrail, which records KMS API calls (such as CreateKey, GenerateDataKey, GenerateDataKeyPair, Encrypt/Decrypt, etc.) and provides an immutable event history for compliance and investigation. Athena can query logs, but it is not the primary audit record source; GuardDuty is for threat detection, not authoritative key-usage auditing. Therefore, the correct combination isKMS with a CloudHSM-backed custom key storeplusCloudTrailfor auditability.
NEW QUESTION # 44
A company has an AWS account that hosts a production application. The company receives an email notification that Amazon GuardDuty has detected an Impact:IAMUser/AnomalousBehavior finding in the account. A security engineer needs to run the investigation playbook for this security incident and must collect and analyze the information without affecting the application.
Which solution will meet these requirements MOST quickly?
Answer: C
Explanation:
Amazon GuardDuty findings provide high-level detection of suspicious activity but are not designed for deep investigation on their own. The AWS Certified Security - Specialty documentation explains that Amazon Detective is purpose-built to support rapid investigations by automatically collecting, correlating, and visualizing data from GuardDuty, AWS CloudTrail, and VPC Flow Logs. Detective enables security engineers to analyze API calls, user behavior, and resource interactions in context without making any changes to the environment.
Using read-only credentials ensures that the investigation does not impact the production application. Amazon Detective allows investigators to pivot directly from a GuardDuty finding into a detailed activity graph, showing which IAM user made anomalous calls, what resources were accessed, and how behavior deviated from the baseline. This significantly accelerates incident investigation.
Options A and C involve applying DenyAll policies, which are containment actions and could affect application availability. Option D requires manual analysis and setup and is slower than using Amazon Detective, which is designed for immediate investigative workflows.
AWS incident response guidance recommends using Detective for rapid, non-intrusive analysis after GuardDuty findings.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
Amazon GuardDuty and Amazon Detective Integration
AWS Incident Response Investigation Best Practices
NEW QUESTION # 45
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: A
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.
NEW QUESTION # 46
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