サンプル問題 1： Which CloudWatch metric filter includes log events with the word ERROR but excludes log events with the word WARNING?
A: ?ERROR ?WARN
B: "ERROR" WARN
C: ERROR -WARN
D: ERROR WARN
正解：C
Explanation: A metric filter in Amazon CloudWatch Logs can be used to search for specific terms in log data and create metrics based on the matches. To include log events with the word "ERROR" and exclude those with the word "WARNING," the correct syntax involves using a filter pattern with a positive match for "ERROR" and a negation for "WARNING." The correct pattern is "ERROR -WARN," where the minus sign (-) indicates exclusion of log events containing "WARN." According to the WGU Cloud Deployment and Operations Study Guide (Section 4.2, CloudWatch Logs), metric filters use a pattern-based syntax where terms are included or excluded using positive matches and the negation operator (-). This ensures that only logs with "ERROR" and without "WARN" are processed into the metric
サンプル問題 2： Which AWS solution can send email based on CloudWatch alarms?
A: Simple Queue Service (SQS
B: Simple Notification Service (SNS
C: Amplify
D: Kinesis
正解：B
Explanation: Amazon CloudWatch alarms can trigger notifications when a metric breaches a defined threshold. The AWS solution designed to send emails based on these alarms is Amazon Simple Notification Service (SNS). SNS supports sending notifications via email, SMS, and other protocols when subscribed endpoints are triggered by CloudWatch alarms. The WGU Cloud Deployment and Operations Study Guide (Section 4.3, Monitoring and Alarms) states that SNS is the primary service for delivering notifications from CloudWatch, allowing users to configure email subscriptions for alarm states. Other options like SQS, Amplify, and Kinesis are not designed for this purpose.
サンプル問題 3： How are custom metrics grouped in CloudWatch?
A: Namespace
B: Service
C: Date
D: Value
正解：A
Explanation: In Amazon CloudWatch, custom metrics are organized and grouped using namespaces. A namespace is a container for CloudWatch metrics that allows you to isolate and categorize metrics from different applications or services. According to the WGU Cloud Deployment and Operations Study Guide (Section 4.1, CloudWatch Metrics), each custom metric must be assigned to a namespace, which acts as a unique identifier to prevent naming collisions and facilitate metric management. Options like Service, Date, and Value are not used for grouping metrics in this context.
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