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| Section | Weight | Objectives |
|---|---|---|
| Deployment, Provisioning, and Automation | 20% | - Deploy and provision resources consistently
|
| Networking and Content Delivery | 18% | - Configure and maintain AWS networking services
|
| Reliability and Business Continuity | 22% | - Design and implement high availability and fault tolerance
|
| Security and Compliance | 18% | - Enforce security controls and compliance requirements
|
| Monitoring, Logging, Analysis, Remediation, and Performance Optimization | 22% | - Collect and interpret metrics, logs, and events
|
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NEW QUESTION # 220
A company stores critical data in Amazon S3 buckets. A CloudOps engineer must build a solution to record all S3 API activity. Which action will meet this requirement?
Answer: B
Explanation:
To record all S3 API activity, the correct service is AWS CloudTrail with S3 data events enabled.
CloudTrail management events record bucket-level management actions, while S3 data events record object-level API activity such as GetObject, PutObject, and DeleteObject. Since the requirement says all S3 API activity, object-level data events are essential. S3 server access logging records requests to a bucket, but it is less complete and not the primary AWS audit mechanism for API-level activity across accounts and services. S3 bucket metrics provide operational metrics, not detailed API audit records. IAM Access Analyzer helps evaluate access policies and external access risk; it does not store object API logs. Therefore, CloudTrail S3 data events are the correct compliance logging solution.
NEW QUESTION # 221
A company runs a website on Amazon EC2 instances. Users can upload images to an Amazon S3 bucket and publish the images to the website. The company wants to deploy a serverless image-processing application that uses an AWS Lambda function to resize the uploaded images.
The company's development team has created the Lambda function. A CloudOps engineer must implement a solution to invoke the Lambda function when users upload new images to the S3 bucket.
Which solution will meet this requirement?
Answer: C
Explanation:
Comprehensive and Detailed Explanation From Exact Extract of AWS CloudOps Doocuments:
Use Amazon S3 Event Notifications with AWS Lambda to trigger image processing on object creation. S3 natively supports invoking Lambda for events such as s3:ObjectCreated:*, providing a serverless, low-latency pipeline without managing additional services. AWS operational guidance states that "Amazon S3 can directly invoke a Lambda function in response to object-created events," allowing you to pass event metadata (bucket/key) to the function for resizing and writing results back to S3. This approach minimizes operational overhead, scales automatically with upload volume, and integrates with standard retry semantics. SNS or SQS can be added for fan-out or buffering patterns, but they are not required when the requirement is simply "invoke the Lambda function on upload." CloudWatch alarms do not detect individual S3 object uploads and cannot directly satisfy per-object triggers. Therefore, configuring S3 → Lambda event notifications meets the requirement most directly and aligns with CloudOps best practices for event-driven, serverless automation.
References (AWS CloudOps Documents / Study Guide):
* Using AWS Lambda with Amazon S3 (Lambda Developer Guide)
* Amazon S3 Event Notifications (S3 User Guide)
* AWS Well-Architected - Serverless Applications (Operational Excellence)
NEW QUESTION # 222
A company moves workloads from public subnets to private subnets to improve security. During testing, servers in the private subnets cannot reach an external API. The VPC has a CIDR block of 10.0.0.0/16, two public subnets, two private subnets, one internet gateway, and a NAT gateway in each private subnet.
The company must ensure that workloads in the private subnets can reach the external API.
Which solution will meet this requirement?
Answer: A
Explanation:
Comprehensive Explanation (250-350 words):
For IPv4 traffic, private subnets require a NAT gateway in a public subnet to access the internet. NAT gateways must be deployed in public subnets and associated with an Elastic IP address. Private subnet route tables must direct 0.0.0.0/0 traffic to the NAT gateway.
The question states that NAT gateways are incorrectly placed in private subnets, which cannot provide internet access. Deploying NAT gateways in public subnets resolves this issue and restores outbound connectivity to external APIs.
Option A applies only to IPv6. Option B adds unnecessary complexity. Option D is not applicable because external APIs are not AWS services.
NEW QUESTION # 223
An Amazon EC2 instance is running an application that uses Amazon Simple Queue Service (Amazon SQS) queues. A CloudOps engineer must ensure that the application can read, write, and delete messages from the SQS queues.
Which solution will meet these requirements in the MOST secure manner?
Answer: C
Explanation:
The most secure pattern is to use an IAM role for Amazon EC2 with the minimum required permissions. AWS guidance states: "Use roles for applications that run on Amazon EC2 instances" and "grant least privilege by allowing only the actions required to perform a task." By attaching a role to the instance, short-lived credentials are automatically provided through the instance metadata service; this removes the need to create long-term access keys or embed secrets. Granting only sqs:SendMessage, sqs:ReceiveMessage, and sqs:DeleteMessage against the specific SQS queues enforces least privilege and aligns with CloudOps security controls.
Options A and B rely on IAM user access keys, which contravene best practices for workloads on EC2 and increase credential- management risk. Option C uses a role but grants sqs:*, violating least-privilege principles. Therefore, Option D meets the security requirement with scoped, temporary credentials and precise permissions.
NEW QUESTION # 224
A company runs a web application on three Amazon EC2 instances behind an Application Load Balancer (ALB). The company notices that random periods of increased traffic cause a degradation in the application's performance.
A CloudOps engineer must scale the application to meet the increased traffic.
Which solution meets these requirements?
Answer: D
Explanation:
Auto Scaling groups with target tracking scaling policies automatically adjust capacity based on real-time demand. This solution is ideal for handling unpredictable and random traffic spikes.
Target tracking scaling maintains a metric, such as average CPU utilization or request count per target, at a defined target value. The Auto Scaling group automatically launches or terminates instances as traffic fluctuates.
Manual scaling, EventBridge-based scaling, or scheduled scaling do not respond dynamically to random traffic patterns.
Therefore, an Auto Scaling group with a target tracking scaling policy is the correct solution.
NEW QUESTION # 225
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