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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cost and Performance Optimization | 28% | - Right-sizing and capacity planning - Resource performance tuning - Cost monitoring and optimization strategies |
| Topic 2: Security and Compliance | 18% | - Identity and access management (IAM) - Security monitoring and auditing - Data protection and encryption |
| Topic 3: Monitoring, Logging, and Remediation | 20% | - Metrics and monitoring using Amazon CloudWatch - Automated remediation and operational workflows - Centralized logging and log analysis with AWS services |
| Topic 4: Deployment, Provisioning, and Automation | 18% | - Automated deployment pipelines - Infrastructure as Code using AWS CloudFormation - Configuration management and orchestration tools |
| Topic 5: Reliability and Business Continuity | 16% | - Data replication and recovery mechanisms - Backup and disaster recovery strategies - High availability and fault tolerance design |
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질문 # 298
A company's reporting job that previously ran in 15 minutes is now taking 1 hour. The application runs on Amazon EC2 and extracts data from an Amazon RDS for MySQL DB instance.
CloudWatch metrics show high Read IOPS even when reports are not running. The CloudOps engineer must improve performance and availability.
Which solution will meet these requirements?
정답：D
설명：
Comprehensive Explanation (250-350 words):
RDS read replicas offload read traffic from the primary database, improving performance and availability. By directing reporting queries to the reader endpoint, the primary instance is freed from heavy read workloads.
ElastiCache is unsuitable for complex SQL reporting. CloudFront cannot front a database. Increasing instance size does not address inefficient read scaling.
Thus, read replicas are the correct solution.
질문 # 299
A company uses an AWS Lambda function to process user uploads to an Amazon S3 bucket.
The Lambda function runs in response to Amazon S3 PutObject events.
A SysOps administrator needs to set up monitoring for the Lambda function. The SysOps administrator wants to receive a notification through an Amazon Simple Notification Service (Amazon SNS) topic if the function takes more than 10 seconds to process an event.
Which solution will meet this requirement?
정답：D
설명：
AWS Lambda automatically publishes operational metrics to Amazon CloudWatch, including Duration, which represents the time a function invocation takes to run. To alert when processing time exceeds 10 seconds, the most direct and operationally efficient solution is to create a CloudWatch alarm on the Lambda Duration metric and configure the alarm action to publish to an SNS topic. This meets the monitoring requirement without requiring log parsing or additional query mechanisms.
Option B fits best because it uses the built-in metric stream for Lambda observability:
CloudWatch metrics are near real-time, require minimal configuration, and alarms are a standard CloudOps practice for proactive notification. The alarm can be configured with the appropriate statistic (for example, Maximum or p99 via metric math where applicable) and a threshold of
10,000 milliseconds, ensuring the operations team is notified before performance degrades further.
질문 # 300
A company runs its applications on a large number of Amazon EC2 instances. A CloudOps engineer must implement a solution to notify the operations team whenever an EC2 instance state changes. What is the MOST operationally efficient solution that meets these requirements?
정답：B
설명：
Amazon EventBridge receives EC2 instance state-change events and can route matching events directly to a target such as an Amazon SNS topic. This is the most operationally efficient solution because it uses native event-driven integration and does not require scripts, agents, polling, or custom Lambda code. Option A is poor operational design because every instance would need script execution and maintenance. Option C adds an unnecessary Lambda function; EventBridge can publish to SNS directly. Option D misuses AWS Config, which is better suited to configuration compliance and resource-state evaluation, not simple near-real-time notification of every EC2 instance state transition. For CloudOps event monitoring, EventBridge rules are the standard approach for reacting to AWS service events and notifying operators.
질문 # 301
A company has a non-production application that runs on an Amazon EC2 instance. The instance has an Amazon EBS volume attached. Each time an instance health check fails, a CloudOps engineer resolves the issue by rebooting the instance.
The CloudOps engineer must implement an automated solution to reboot the instance after a failed health check. The CloudOps engineer creates a service-linked IAM role for Amazon EventBridge.
What should the CloudOps engineer do next to meet the automation requirement?
정답：B
설명：
The StatusCheckFailed_Instance metric detects instance-level status check failures. Using the instance ID as the metric dimension targets the specific EC2 instance, and configuring the CloudWatch alarm with an EC2 reboot action automatically reboots the instance whenever the status check failure is detected.
질문 # 302
A company generates hundreds of images and uploads the images to an Amazon S3 bucket. The company manually copies the images to an always-on Amazon EC2 instance for processing. It usually takes between 30 seconds and 120 seconds to process each image.
A CloudOps engineer wants to automate the image processing solution to process the images as soon as they arrive in the S3 bucket.
Which solution will meet these requirements MOST cost-effectively?
정답：C
설명：
Invoking an AWS Lambda function from S3 event notifications provides fully automated, serverless, pay-per-use processing that starts immediately when each object is uploaded. This avoids the cost of an always-on EC2 fleet and is typically the most cost-effective option for short, event-driven processing workloads like 30-120 second per-image processing (within Lambda limits).
질문 # 303
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