Troubleshoot Common Configuration Issues AT0-001 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   An API request is failing with a 429 Too Many Requests error. Which of the following is the most appropriate first step to resolve this issue?

   • AIncrease the timeout value in the client configuration
   • BImplement retry logic with exponential backoff
   • CChange the HTTP method from GET to POST
   • DDisable the API key to reset the limit
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2. 7expert · medium

   A DevOps engineer is troubleshooting a CI/CD pipeline that fails during the deployment stage. The pipeline reads a configuration file that is generated by a previous stage. The error log shows 'Error: yaml: line 4: mapping values are not allowed in this context'. The engineer examines the generated file and sees: ```yaml app: name: my-app replicas: 3 image: myregistry/my-app:latest env: - name: DEBUG value: "true" ``` The file looks correct to the engineer. What is the most likely cause of the error?

   • AThe generated file contains a tab character for indentation instead of spaces.
   • BThe 'env' key is a list, but the pipeline expects a mapping.
   • CThe 'image' key's value contains a colon, which is not allowed in YAML.
   • DThe 'value: "true"' should not have quotes around 'true'.
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4. 8foundation · easy

   Which of the following best describes the role of an API endpoint in API communication?

   • AA security token used to authenticate the client to the API
   • BA protocol that defines how data is formatted during transmission
   • CA data format used to structure the response body
   • DA specific URL that identifies a resource or function exposed by the API
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5. 9expert · medium

   A company has a microservices architecture where Service A calls Service B via a REST API. Recently, Service A started failing with 'Connection reset by peer' errors. The network team confirms there is no packet loss or firewall changes. Service B's CPU usage is normal, and its logs show no errors. The error occurs only when Service A sends requests with a large payload (over 1 MB). What is the most likely cause of the connection resets?

   • AService B's database connection pool is exhausted, and it cannot process the request.
   • BService B's web server has a maximum request body size limit that is smaller than the payload, causing it to close the connection.
   • CService A is using an expired TLS certificate to connect to Service B, and the handshake fails for large payloads.
   • DService A is not setting the 'Content-Length' header correctly for large payloads.
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6. 10application · medium

   A web application is intermittently failing to fetch data from a third-party API. The application logs show a mix of successful requests and '500 Internal Server Error' responses from the API. The API provider's status page shows no known issues. What is the most likely cause of the intermittent 500 errors?

   • AThe application is using an expired TLS certificate to connect to the API, and the handshake sometimes fails.
   • BThe API provider is experiencing intermittent server-side issues that are not yet reflected on their status page.
   • CThe application is sending malformed JSON in the request body, and the API only rejects it sometimes.
   • DThe application's API key is being rate-limited by the provider, and the limit is enforced with a 500 status code.
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