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NEW QUESTION # 193
A company finds that one of its Amazon EC2 instances suddenly has a high CPU usage. The company does not know whether the EC2 instance is compromised or whether the operating system is performing background cleanup.
Which combination of steps should a security engineer take before investigating the issue? (Select THREE.)
Answer: A,D,F
Explanation:
Before beginning an investigation, incident response best practice is topreserve evidence,prevent accidental loss of the asset, andclearly mark and control the potentially affected resource. Enablingtermination protection (Option B) helps ensure the instance is not accidentally terminated during triage, which would destroy volatile evidence and complicate forensics and recovery.
TakingEBS snapshotsof all attached data volumes (Option C) preserves a point-in-time copy of disk evidence for later forensic analysis, malware scanning, or offline investigation. Snapshots allow responders to create forensic volumes or AMIs in an isolated environment without repeatedly touching the potentially compromised instance.
Capturinginstance metadataand tagging the instance asunder quarantine(Option E) supports both investigation and operational control. Metadata capture (instance ID, IAM role, network interfaces, security groups, user- data, tags, recent changes) provides context for responders. Quarantine tagging enables automated workflows (for example, incident runbooks that isolate the instance, restrict IAM, or move it to a quarantine security group) and signals to other teams/tools that the instance is under investigation.
Option A is the opposite of what you want. Option D destroys evidence. Option F is not an appropriate
"before investigation" step; altering metadata risks losing evidence and is not the primary containment approach.
NEW QUESTION # 194
A company hosts its public website on Amazon EC2 instances behind an Application Load Balancer (ALB).
The website is experiencing a global DDoS attack from a specific IoT device brand that uses a unique user agent. A security engineer is creating an AWS WAF web ACL and will associate it with the ALB.
Which rule statement will mitigate the current attack and future attacks from these IoT devices without blocking legitimate customers?
Answer: C
Explanation:
AWS WAF string match rule statements allow inspection of HTTP headers, including the User-Agent header.
According to AWS Certified Security - Specialty guidance, when malicious traffic can be uniquely identified by a consistent request attribute, such as a device-specific user agent, a string match rule provides precise mitigation with minimal false positives.
IP-based blocking is ineffective for globally distributed botnets. Geographic blocking risks denying access to legitimate users. Rate-based rules limit request volume but do not prevent low-and-slow attacks.
By matching the unique IoT device brand in the User-Agent header, the security engineer can block only malicious requests while preserving customer access.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
AWS WAF Rule Statements
AWS DDoS Mitigation Best Practices
NEW QUESTION # 195
A company runs critical workloads in an on-premises data center. The company wants to implement an AWS based disaster recovery (DR) solution that will achieve an RTO of less than 1 hour. The company needs to continuously replicate physical and virtual servers. The company must optimize costs for data storage and bandwidth usage. The DR solution must be automated.
Which solution will meet these requirements?
Answer: A
Explanation:
AWS Elastic Disaster Recovery (AWS DRS)is purpose-built for continuously replicatingphysical and virtual serversinto AWS with low RTO/RPO. It uses lightweight replication agents to stream block-level changes to a low-coststaging areain AWS, which helps optimize storage costs (only the staging resources run continuously) and reduces bandwidth usage through efficient replication mechanisms. In a disaster or test, AWS DRS can automatically launch recovery instances in AWS based on a defined blueprint (instance types, networking, security groups), enabling rapid failover workflows that commonly meetsub-hour RTOobjectives.
Option A is not the intended service model: AWS Backup protects AWS-native resources and does not
"directly replicate" arbitrary on-prem servers as a continuous replication DR system. Option B (Storage Gateway Volume Gateway) can support backups of certain storage use cases via snapshots, but it is not a general continuous replication solution for diverse physical/virtual servers and may not meet the RTO requirement as directly as AWS DRS. Option D (Direct Connect + custom automation) can help with connectivity, but it does not provide continuous server replication by itself and would require significant custom engineering and ongoing operational effort.
Therefore, enabling AWS Elastic Disaster Recovery and configuring replication agents is the best automated, cost-optimized solution.
NEW QUESTION # 196
A company has an organization in AWS Organizations. The company's security team is developing automation to capture Amazon EC2 forensic evidence within any AWS account in the organization. The company has encrypted the Amazon EBS volumes of all the EC2 instances in the organization by default by using the AWS managed key. The automation consists of AWS Lambda functions and AWS Step Functions state machines.
The automation assumes an IAM role in the target AWS account. The automation takes snapshots of suspicious EC2 instances and assigns permissions to allow the security team's account to copy the snapshots.
The security team has an AWS KMS key to encrypt the snapshots. During testing, the automation fails to copy the snapshots into the security team's AWS account.
Which combination of steps should the security team take so that the automation can capture EC2 forensic evidence in all AWS accounts in the organization? (Select THREE.)
Answer: A,C,E
Explanation:
Comprehensive and Detailed 100to 150 words of Explanation From AWS Certified Security - Specialty topics:
Encrypted EBS snapshots that use the default AWS managed key cannot be shared across accounts. AWS documentation states that only snapshots encrypted with a customer managed key can be shared, and the customer managed key must also allow the destination account or automation role to use it. Therefore, the target accounts need customer managed KMS keys and appropriate KMS permissions for the automation role.
The security account also needs permissions to use its own customer managed key when copying and re- encrypting the evidence snapshot. The automation must explicitly use the customer managed KMS key, not the AWS managed key. Updating the AWS managed key policy is not possible in the required way because AWS managed keys are controlled by AWS.
NEW QUESTION # 197
An IAM user receives an Access Denied message when the user attempts to access objects in an Amazon S3 bucket. The user and the S3 bucket are in the same AWS account. The S3 bucket is configured to use server-side encryption with AWS KMS keys (SSE-KMS) to encrypt all of its objects at rest by using a customer managed key from the same AWS account. The S3 bucket has no bucket policy defined. The IAM user has been granted permissions through an IAM policy that allows thekms:Decryptpermission to the customer managed key. The IAM policy also allows thes3:List* ands3:Get* permissions for the S3 bucket and its objects.
Which of the following is a possible reason that the IAM user cannot access the objects in the S3 bucket?
Answer: C
Explanation:
WithSSE-KMS, authorization is a two-part check: the caller must have S3 permissions to read the objectandthe caller must be allowed to use the KMS key for decryption. Even if an IAM policy grants kms:Decrypt, the request will still fail if theKMS key policydoes not allow the principal (or does not allow the account to delegate use of the key). KMS key policies are authoritative: they can prevent key usage even when IAM policies appear to allow it.
A common misconfiguration is editing the key policy and removing the statement that grants the AWS account (or key administrators) the ability to manage and delegate permissions for the key-- often described as removing "Enable IAM user permissions" or otherwise blocking the account from using IAM policies to authorize key usage. In that case, the IAM user's kms:Decrypt permission in IAM is not sufficient because the key policy no longer permits it, resulting in Access Denied when S3 attempts to call KMS on the user's behalf during GetObject.
NEW QUESTION # 198
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