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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Reliability and Business Continuity | 16% | - Backup and disaster recovery strategies - High availability and fault tolerance design - Data replication and recovery mechanisms |
| Topic 2: Monitoring, Logging, and Remediation | 20% | - Automated remediation and operational workflows - Metrics and monitoring using Amazon CloudWatch - Centralized logging and log analysis with AWS services |
| Topic 3: Security and Compliance | 18% | - Security monitoring and auditing - Identity and access management (IAM) - Data protection and encryption |
| Topic 4: Cost and Performance Optimization | 28% | - Right-sizing and capacity planning - Resource performance tuning - Cost monitoring and optimization strategies |
| Topic 5: Deployment, Provisioning, and Automation | 18% | - Configuration management and orchestration tools - Infrastructure as Code using AWS CloudFormation - Automated deployment pipelines |
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NEW QUESTION # 231
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?
Answer: C
Explanation:
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.
NEW QUESTION # 232
A company hosts a web application on an Amazon EC2 instance. The web server logs are published to Amazon CloudWatch Logs. The log events have the same structure and include the HTTP response codes associated with user requests. The company needs to monitor the number of times the web server returns an HTTP 404 response.
What is the MOST operationally efficient solution that meets these requirements?
Answer: C
Explanation:
CloudWatch Logs metric filters allow log data to be converted into CloudWatch metrics in near real time.
This enables continuous monitoring without custom code or scheduled queries. Metric filters are ideal when log events have a consistent structure and specific patterns, such as HTTP response codes.
By defining a metric filter that matches HTTP 404 responses, CloudWatch can increment a metric each time a
404 occurs. This metric can then be used for dashboards, alarms, and trend analysis. This approach is fully managed, scalable, and requires minimal operational effort.
Options B, C, and D rely on subscription filters or periodic queries, which introduce unnecessary complexity, latency, and maintenance overhead. Therefore, metric filters are the most efficient solution.
NEW QUESTION # 233
A development team wants to match events on Amazon EventBridge where the state of an Amazon EC2 machine is not "terminated".
An example event is as follows:
Which event pattern should the development team use to find relevant events?
Answer: C
Explanation:
EventBridge supports negated matching by using anything-but. Combining anything-but with equals-ignore-case matches EC2 state values that are not equal to terminated, regardless of case.
NEW QUESTION # 234
A company uses Amazon Route 53 with latency-based routing across multiple AWS Regions to provide resiliency. The company uses Route 53 with latency-based routing to direct traffic to the nearest Region. Within each Region, weighted A records distribute traffic across multiple Availability Zones.
During a recent update, some Availability Zone endpoints became unhealthy. Route 53 continued to route traffic to the unhealthy endpoints. The company must prevent this issue from occurring in the future.
Which solution will meet this requirement?
Answer: B
Explanation:
In Route 53 latency-based routing, traffic is routed to the Region with the lowest latency, and within each Region, weighted records can distribute traffic across multiple endpoints. However, if the weighted records lack individual health checks, Route 53 cannot detect endpoint failures and continues routing traffic to unhealthy targets. Attaching a Route 53 health check to each weighted record ensures that only healthy endpoints receive traffic, preventing recurrence of the issue.
NEW QUESTION # 235
A company's reporting job that used to run in 15 minutes is now taking an hour to run. An application generates the reports. The application runs on Amazon EC2 instances and extracts data from an Amazon RDS for MySQL database.
A CloudOps engineer checks the Amazon CloudWatch dashboard for the RDS instance and notices that the Read IOPS metrics are high, even when the reports are not running. The CloudOps engineer needs to improve the performance and the availability of the RDS instance.
Which solution will meet these requirements?
Answer: B
Explanation:
The reporting workload is read-heavy, and the database shows high Read IOPS even outside the report window, suggesting sustained read pressure from other workloads or inefficient read patterns. The requirement is to improve both performance and availability of the RDS for MySQL instance. An RDS read replica is designed specifically to offload read traffic from the primary database instance and to provide additional capacity for read-heavy use cases such as reporting, analytics queries, and dashboards.
By deploying one or more read replicas, the company can direct the reporting job to a replica (Option B). This reduces contention on the primary instance, lowers read I/O demand on the writer, and can improve overall query latency and throughput. In addition, read replicas can contribute to availability objectives: if the primary instance has issues, replicas can be promoted (manually or as part of certain DR patterns) to become a new standalone database, reducing recovery time for read availability and providing a practical resilience option.
Option A (ElastiCache) can help for highly cacheable and repetitive queries, but it requires application/query redesign and cache invalidation strategy, and it does not inherently improve database availability. Option C is not valid because CloudFront is a CDN for HTTP content and is not an appropriate layer for database queries.
Option D (vertical scaling) can improve performance, but it does not offload reads and often involves higher cost; it also does not provide the same availability and read scaling benefits as replicas.
Therefore, adding an RDS read replica and pointing the reporting workload to the reader endpoint best meets the performance and availability requirements.
NEW QUESTION # 236
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