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NEW QUESTION # 154
A company uploads data files as objects into an Amazon S3 bucket. A vendor downloads the objects to perform data processing. A security engineer must implement a solution that prevents objects from residing in the S3 bucket for longer than 72 hours.
Answer: B
Explanation:
Amazon S3 Lifecycle configuration rules are the native, automated mechanism for managing object retention and deletion. According to AWS Certified Security - Specialty documentation, lifecycle rules can be configured to expire objects based on the number of days since object creation. Once the expiration time is reached, Amazon S3 permanently deletes the objects without manual intervention.
This solution directly enforces a maximum retention period of 72 hours and ensures compliance regardless of whether the vendor downloads the data or not. Lifecycle rules are evaluated continuously by Amazon S3 and do not require scripts, cron jobs, or additional services, making them the most operationally efficient and cost-effective solution.
S3 Versioning controls versions but does not enforce object deletion timelines. S3 Intelligent- Tiering optimizes storage cost but does not delete objects. Presigned URLs only control access duration and do not remove objects from storage.
AWS explicitly recommends lifecycle policies for automated data retention enforcement.
NEW QUESTION # 155
A company is storing data in Amazon S3 Glacier. A security engineer implemented a new vault lock policy for 10 TB of data and called the initiate-vault-lock operation 12 hours ago. The audit team identified a typo in the policy that is allowing unintended access to the vault.
What is the MOST cost-effective way to correct this error?
Answer: B
Explanation:
Amazon S3 Glacier Vault Lock has a 24-hour in-progress period after initiate-vault-lock is called.
During this period, the lock is not yet immutable, and AWS allows the vault lock process to be aborted. Since the security engineer discovered the typo only 12 hours after initiation, the most cost-effective correction is to abort the current vault lock, fix the policy, and initiate the vault lock process again. Copying 10 TB of data to a new location is unnecessary, expensive, and operationally wasteful. Updating the policy without aborting does not correctly resolve a vault lock policy in progress. Once the lock is completed, the policy becomes immutable, so action must be taken before completion.
NEW QUESTION # 156
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?
Answer: B
Explanation:
No remote access management ports exposed: Systems Manager Session Manager does not require the opening of any inbound ports on the EC2 instances, which ensures compliance with the policy that no remote management ports should be exposed internally or externally.
Remote session activity recorded in an audit log: Session Manager automatically records all session activity in AWS CloudTrail and Amazon CloudWatch Logs. This meets the requirement for audit logs of remote session activity.
Authentication and authorization by AWS IAM Identity Center: With Session Manager, access to EC2 instances is managed through IAM policies, ensuring that access is authenticated and authorized using AWS IAM Identity Center (formerly known as AWS Single Sign-On).
NEW QUESTION # 157
A company runs an internet-accessible application on several Amazon EC2 instances that run Windows Server. The company used an instance profile to configure the EC2 instances. A security team currently accesses the VPC that hosts the EC2 instances by using an AWS Site-to-Site VPN tunnel from an on-premises office.
The security team issues a policy that requires all external access to the VPC to be blocked in the event of a security incident. However, during an incident, the security team must be able to access the EC2 instances to obtain forensic information on the instances.
Which solution will meet these requirements?
Answer: B
Explanation:
EC2 Instance Connect endpoints provide secure, private connectivity to EC2 instances without requiring public IP addresses, inbound internet access, or VPN connectivity. According to AWS Certified Security - Specialty documentation, Instance Connect endpoints are designed specifically for incident response and secure administrative access scenarios.
By deploying an EC2 Instance Connect endpoint in the VPC, the security team can block all external network access while still maintaining controlled access to EC2 instances through the AWS Management Console.
The endpoint uses AWS-managed infrastructure and private connectivity, and access is authorized using IAM policies and instance profiles.
Options A and B rely on direct EC2 Instance Connect installation and network paths that may still depend on external access. Option C is incorrect because tunneling is not required when using the console-based Instance Connect endpoint.
This solution enables forensic access during incidents without reopening external network paths, aligning with AWS incident response best practices.
Referenced AWS Specialty Documents:
AWS Certified Security - Specialty Official Study Guide
EC2 Instance Connect Endpoint Architecture
AWS Incident Response Best Practices
NEW QUESTION # 158
A company has installed a third-party application that is distributed on several Amazon EC2 instances and on-premises servers. Occasionally, the company's IT team needs to use SSH to connect to each machine to perform software maintenance tasks. Outside these time slots, the machines must be completely isolated from the rest of the network. The company does not want to maintain any SSH keys. Additionally, the company wants to pay only for machine hours when there is an SSH connection.
Which solution will meet these requirements?
Answer: B
Explanation:
AWS Systems ManagerSession Managerprovides interactive shell access to managed instanceswithout inbound SSH,without bastion hosts, andwithout managing SSH keys. Access is controlled through IAM policies, and every session can be logged to CloudWatch Logs/S3 for auditability. This directly satisfies the "no SSH keys" requirement and reduces the network exposure surface because you can keep port 22 closed and still obtain shell access when needed.
To meet the isolation requirement, the instances can be placed in private subnets with no inbound access, and you can use Systems Manager connectivity (via SSM endpoints/agents) for administrative sessions only when required. On-premises servers can also be managed by Systems Manager by registering them as managed instances (hybrid activations), allowing the same no-SSH-key operational model across EC2 and on-prem environments.
NEW QUESTION # 159
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