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NEW QUESTION # 342
A company has a VPC that contains a public subnet and a private subnet. The company deploys an Amazon EC2 instance that uses an Amazon Linux Amazon Machine Image (AMI) and has the AWS Systems Manager Agent (SSM Agent) installed in the private subnet. The EC2 instance is in a security group that allows only outbound traffic.
A CloudOps engineer needs to give a group of privileged administrators the ability to connect to the instance through SSH without exposing the instance to the internet.
Which solution will meet this requirement?
Answer: A
Explanation:
Comprehensive and Detailed Explanation From Exact Extract of AWS CloudOps Doocuments:
EC2 Instance Connect Endpoint (EIC Endpoint) enables SSH to instances in private subnets without public IPs and without needing to traverse the public internet. CloudOps guidance explains that you deploy the endpoint in the same VPC/subnet as the targets, then allow inbound SSH on the instance security group from the endpoint's security group. Access is governed by IAM-administrators must have Instance Connect permissions; while the example uses a broad policy, the key mechanism is EIC in the private subnet plus SG rules scoped to the endpoint. Systems Manager Session Manager can provide shell access without SSH, but the requirement explicitly states "connect through SSH," making EIC the purpose-built solution.
Options B and D misuse Systems Manager for SSH and propose unnecessary SG changes or incorrect endpoint placement; Option C places the endpoint in a public subnet, which is not required for private SSH access. Therefore, creating an EC2 Instance Connect endpoint in the private subnet and updating SGs accordingly meets the requirement while keeping the instance non-internet-exposed.
References:* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Security and Compliance* Amazon EC2 - Instance Connect Endpoint (Private SSH Access)* AWS Well-Architected Framework - Security Pillar (Least Privilege Network Access)
NEW QUESTION # 343
A user working in the Amazon EC2 console increased the size of an Amazon Elastic Block Store (Amazon EBS) volume attached to an Amazon EC2 Windows instance. The change is not reflected in the file system.
What should a CloudOps engineer do to resolve this issue?
Answer: A
Explanation:
When an Amazon EBS volume is resized, the new storage capacity is immediately available to the attached EC2 instance. However, EBS does not automatically extend the file system. The CloudOps engineer must manually extend the file system within the operating system to utilize the additional space.
"After you increase the size of an EBS volume, use file system-Specific tools to extend the file system so that the operating system can use the new storage capacity." On Windows instances, this can be achieved through Disk Management or diskpart commands.
On Linux systems, utilities such as growpart and resize2fs are used.
Options B and C do not modify file system metadata and are ineffective. Option D unnecessarily replaces the volume, which adds risk and downtime. Thus, Option A aligns with the Monitoring and Performance Optimization practices of AWS CloudOps by properly extending the file system to recognize the new capacity.
NEW QUESTION # 344
A CloudOps engineer wants to provide access to AWS services by attaching an IAM policy to multiple IAM users. The CloudOps engineer also wants to be able to change the policy and create new versions.
Which combination of actions will meet these requirements? (Select TWO.)
Answer: B,C
Explanation:
Comprehensive Explanation (250-350 words):
IAM user groups allow permissions to be managed centrally and applied to multiple users simultaneously, making them ideal for scalable access management. Attaching policies to groups ensures that changes propagate automatically to all members.
A customer managed policy supports versioning, reuse, and centralized updates, which meets the requirement to modify policies and manage versions over time. AWS managed policies cannot be edited, and inline policies do not support reuse or versioning across multiple principals.
Option A is invalid because service-linked roles are AWS-managed and not designed for user access. Option E lacks versioning and reusability. Option C does not allow customization.
Therefore, using IAM groups with a customer managed policy is the correct and secure solution.
NEW QUESTION # 345
A company has an application that uses an Amazon EFS file system. A recent incident that involved an application logic error corrupted several files. The company wants to improve its ability to back up and recover the EFS file system. The company must be able to recover individual files rapidly. Which solution meets these requirements MOST cost-effectively?
Answer: A
Explanation:
AWS Backup is the managed service for backing up and restoring Amazon EFS file systems. It supports backup vaults and restore workflows without requiring a second live EFS file system.
This is more cost-effective than maintaining a duplicate EFS file system in another Region. AWS documentation explains that AWS Backup performs incremental backups of EFS file systems, reducing duplicate backup storage and improving cost efficiency. For file-level recovery, a partial restore job can restore selected files or directories rather than restoring the entire file system.
Amazon DLM is primarily used for EBS snapshots, not EFS file-level backup management. S3 Glacier retrieval is not the best fit for rapid individual file recovery because retrieval latency and restore workflow are unsuitable for quick operational recovery. Therefore, AWS Backup with partial restore is the right answer.
NEW QUESTION # 346
A company is planning to host an application on a set of Amazon EC2 instances that are distributed across multiple Availability Zones. The application must be able to scale to millions of requests each second.
A CloudOps engineer must design a solution to distribute the traffic to the EC2 instances. The solution must be optimized to handle sudden and volatile traffic patterns while using a single static IP address for each Availability Zone.
Which solution will meet these requirements?
Answer: D
Explanation:
A Network Load Balancer (NLB) is optimized for high performance and ultra-low latency, capable of handling millions of requests per second. It supports static IP addresses per Availability Zone, making it ideal for applications requiring zonal IP stability and rapid scaling to handle sudden traffic surges. In contrast, Application Load Balancers don't support static IPs directly, and other options like SQS or Global Accelerator don't provide direct traffic distribution to EC2 instances.
NEW QUESTION # 347
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