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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security and Compliance | 18% | - Implement identity and access management
|
| Topic 2: Networking and Content Delivery | 18% | - Optimize and troubleshoot network connectivity and performance
|
| Topic 3: Reliability and Business Continuity | 22% | - Design and implement high availability and fault tolerance
|
| Topic 4: Deployment, Provisioning, and Automation | 20% | - Deploy and provision resources consistently
|
| Topic 5: Monitoring, Logging, Analysis, Remediation, and Performance Optimization | 22% | - Remediate issues and optimize performance
|
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NEW QUESTION # 273
A company runs applications on Amazon EC2 instances. The company wants to ensure that SSH ports on the EC2 instances are never open. The company has enabled AWS Config and has set up the restricted-ssh AWS managed rule.
A CloudOps engineer must implement a solution to remediate SSH port access for noncompliant security groups.
What should the engineer do to meet this requirement with the MOST operational efficiency?
Answer: B
Explanation:
The AWS Cloud Operations and Governance documentation specifies that AWS Config can be paired with AWS Systems Manager Automation runbooks for automatic remediation of noncompliant resources.
For SSH restrictions, the restricted-ssh managed rule detects any security group allowing inbound traffic on port 22. To automatically remediate these findings, AWS provides the AWS-DisableIncomingSSHOnPort22 runbook. This runbook programmatically removes inbound rules that allow port 22 traffic from affected security groups.
This approach achieves continuous compliance with minimal human intervention. By contrast, sending notifications (Option A) does not enforce remediation, API-based scripts (Option C) add operational overhead, and manual remediation (Option D) violates automation best practices.
Therefore, the most efficient CloudOps solution is Option B, using AWS Config with the AWS-DisableIncomingSSHOnPort22 automation runbook for automatic, scalable enforcement.
NEW QUESTION # 274
A CloudOps engineer needs to ensure that AWS resources across multiple AWS accounts are tagged consistently. The company uses an organization in AWS Organizations to centrally manage the accounts. The company wants to implement cost allocation tags to accurately track the costs that are allocated to each business unit.
Which solution will meet these requirements with the LEAST operational overhead?
Answer: D
Explanation:
Comprehensive Explanation (250-350 words):
AWS Organizations Tag Policies provide a centralized, scalable governance mechanism to standardize tagging across accounts. Tag policies let an organization define tag keys, allowed values, and tagging expectations, helping teams apply consistent tagging conventions across many accounts without building custom logic. This matches the requirement for consistent tags "across multiple accounts" with minimal operational overhead, because the policy is managed centrally and applied at the organization/OUs level.
For cost tracking, user-defined tags must be activated as cost allocation tags in AWS Billing and Cost Management. Enabling cost allocation tags is the required step to make those tags usable in billing views (for example, Cost Explorer allocation and reporting). Combining Tag Policies (governance/consistency) with cost allocation tag activation (billing attribution) directly meets both parts of the requirement.
Option B (CloudTrail + Lambda auto-tagging) is higher operational overhead: it requires event processing, permissions, continuous maintenance, exception handling, and careful logic to avoid incorrect tag assignments. Option C is partially relevant for compliance detection, but AWS Budgets does not "apply tags" to resources; Budgets is for cost/usage alerts and budget tracking. Option D can enforce tagged provisioning paths, but it's not comprehensive for all resource creation mechanisms and Trusted Advisor is not a global
"tag enforcement" engine.
Therefore, A is the most native and least-ops approach for consistent tags across an organization and enabling cost allocation tracking.
NEW QUESTION # 275
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: D
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.
AWS documentation for EC2 and EBS specifies:
"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.
References:* AWS Certified CloudOps Engineer - Associate (SOA-C03) Exam Guide - Domain 1* Amazon EBS - Modifying EBS Volumes* Amazon EC2 User Guide - Extending a File System After Resizing a Volume* AWS Well-Architected Framework - Performance Efficiency Pillar
NEW QUESTION # 276
A company deploys non-production Amazon EC2 instances in a VPC that has an internet gateway attached.
The VPC has a single public subnet and a single private subnet. The EC2 instances in the private subnet cannot communicate outbound to the internet.
Which action will give the EC2 instances in the private subnet the ability to communicate outbound to the internet?
Answer: D
Explanation:
Instances in a private subnet do not have direct internet-routable access, even if the VPC has an internet gateway. To allow outbound internet access while preventing inbound internet-initiated access, deploy a NAT gateway in a public subnet and route the private subnet's default route, 0.0.0.0/0, to that NAT gateway. The NAT gateway then uses the public subnet's route to the internet gateway. Option A is wrong because NAT gateways must be placed in public subnets to reach the internet. Option C would require the instances to have public IP addresses and would make the subnet effectively public, which violates the private subnet model.
Option D is invalid because a VPC can have only one internet gateway attached, and internet gateways are attached to VPCs, not individual subnets.
NEW QUESTION # 277
A company uses an organization in AWS Organizations to manage multiple AWS accounts. The company needs to send specific events from all the accounts in the organization to a new receiver account, where an AWS Lambda function will process the events.
A CloudOps engineer configures Amazon EventBridge to route events to a target event bus in the us- west-2 Region in the receiver account. The CloudOps engineer creates rules in both the sender and receiver accounts that match the specified events. The rules do not specify an account parameter in the event pattern. IAM roles are created in the sender accounts to allow PutEvents actions on the target event bus.
However, the first test events from the us-east-1 Region are not processed by the Lambda function in the receiving account.
What is the likely reason the events are not processed?
Answer: D
Explanation:
When events are sent across AWS accounts -- particularly from multiple accounts in an AWS Organization -- the target event bus in the receiver account must include a resource-based policy that explicitly allows events:PutEvents API calls from the sender accounts or the organization ID.
Even if the sender accounts have IAM permissions to call PutEvents, the receiving event bus must trust those accounts via a resource policy. Without this configuration, EventBridge automatically rejects incoming cross-account events, and those events never reach the target Lambda function for processing.
AWS guidance states that "Cross-account event delivery requires a resource-based policy on the event bus that grants permissions to the source accounts or organization." The policy can include either individual AWS account IDs or the organization's root ID.
In this scenario, because the events originate from multiple accounts and there is no resource policy on the target event bus to authorize those sender accounts, the events are not delivered.
Therefore, the correct cause is C ?the resource-based policy on the target event bus must be modified to allow PutEvents API calls from the sender accounts.
NEW QUESTION # 278
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