Which metric is commonly used to measure the availability of a system?

Percentage of uptime over a period

Number of users accessing the system

Number of security vulnerabilities

A company wants to track the reliability of its application over time. The application is a REST API that serves requests from mobile clients. The company wants to measure the percentage of requests that fail and the percentage of time the API is available. What should a solutions architect do?

Configure Amazon Simple Notification Service (SNS) to send notifications for every failed request.

Enable AWS CloudTrail and analyze the API calls to determine error rates.

Use AWS X-Ray to trace all requests and calculate the error rate from the trace data.

Use Amazon CloudWatch to create a custom metric for error rate and a metric for availability based on the number of successful requests.

AWSCertified Solutions Architect - Professional

Domain 3Objective 4

Task 3.4: Determine a Strategy to Improve Reliability. SAP-C02 Practice Questions (Page 3)

Part of the Content Domain 3: Continuous Improvement for Existing Solutions domain, which makes up ~27% of our current practice bank. AWS does not publish an official question count, but from its 180-minute exam (~70–120 total, ~19–32 in this domain), expect 4–6 from this objective — we provide 32 practice questions to prepare you well beyond it. (estimate)

32questions here

7free pages

11concepts

11 Concepts in This Objective

Reliability Strategy Overview
Fault Isolation and Blast Radius Reduction
Automated Recovery and Self-Healing
Redundancy and Failover Design
Backup and Restore Strategies
Monitoring and Alerting for Reliability
Chaos Engineering and Failure Testing
Capacity Planning and Scaling
Dependency Management and Resilience
Incident Response and Runbooks
Reliability Metrics and Continuous Improvement

Questions 11–15

11foundation · easy
Which AWS service can be used to automate responses to operational events?
Select an answer first
12foundation · easy
Which AWS feature enables point-in-time recovery for Amazon RDS databases?
Select an answer first
13foundation · easy
Which metric is commonly used to measure the availability of a system?
Select an answer first
14application · medium
A company wants to track the reliability of its application over time. The application is a REST API that serves requests from mobile clients. The company wants to measure the percentage of requests that fail and the percentage of time the API is available. What should a solutions architect do?
Select an answer first
15foundation · easy
Which AWS service is used to trace requests as they travel through a distributed application?
Select an answer first

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Task 3.4: Determine a Strategy to Improve Reliability. SAP-C02 Practice Questions (Page 3)

Questions 11–15

Which AWS service can be used to automate responses to operational events?

Which AWS feature enables point-in-time recovery for Amazon RDS databases?

Which metric is commonly used to measure the availability of a system?

A company wants to track the reliability of its application over time. The application is a REST API that serves requests from mobile clients. The company wants to measure the percentage of requests that fail and the percentage of time the API is available. What should a solutions architect do?

Which AWS service is used to trace requests as they travel through a distributed application?

Keep studying — Content Domain 3: Continuous Improvement for Existing Solutions