Demonstrate How to Customize the Format of Log Files F5N3 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A team is building a custom log format that includes the request body. They are concerned that the body may contain newlines and quotes that could break their log parser. Which approach ensures the log output remains on a single line and is safely escaped?

   • AUse $request_body but wrap it in single quotes in the format string.
   • BUse escape=json in the log_format directive and include $request_body in the format string.
   • CUse escape=default and replace newlines manually with sed before parsing.
   • DUse $request_body only when the request method is POST, using an if directive.
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2. 7foundation · easy

   Which NGINX embedded variable represents the HTTP status code of the response?

   • A$http_user_agent
   • B$remote_addr
   • C$status
   • D$request
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4. 8foundation · easy

   In which configuration context can the log_format directive be placed?

   • Amain and http
   • Bserver and location
   • Chttp only
   • Dhttp, server, and location
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5. 9foundation · easy

   How do you apply a custom log format named 'custom' to the access log in a server block?

   • Aaccess_log custom /var/log/nginx/access.log;
   • Baccess_log /var/log/nginx/access.log custom;
   • Cset_log_format custom; access_log /var/log/nginx/access.log;
   • Dlog_format /var/log/nginx/access.log custom;
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6. 10expert · hard

   A team needs to log the request body for POST requests to a specific location, but only when the request fails with a 4xx or 5xx status. They also need the output to be valid JSON for their log aggregator. Which approach satisfies all constraints?

   • AUse the error_log directive with a custom format that includes $request_body.
   • BUse a log_format with escape=json and $request_body, and apply it to all requests, then filter on the aggregator side.
   • CUse a map to set a variable based on $status, then use that variable in the access_log directive's if parameter, with a log_format using escape=json and $request_body.
   • DUse the if directive inside the location block to conditionally set access_log to a file with the custom format.
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