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Which of the following correctly lists the elements in the first line (the request line) of an HTTP/1.1 request?

  1. AThe method, the request target (such as a path) and the HTTP version
  2. BThe HTTP version, the status code and a short reason phrase
  3. CThe source IP address, the destination port number and the method
Show answer and explanation

Answer: A. The method, the request target (such as a path) and the HTTP version

An HTTP request consists of the request line, the headers (one "Name: value" per line), a blank line and the body, in that order. For example, "GET /docs/index.html HTTP/1.1" is a line that requests /docs/index.html with the GET method. In HTTP/1.1 the Host header must also be sent, so that the server can tell which site a request is for even when several sites are run on the same IP address. The first line of a response is the status line, which lists the version, the status code and the reason phrase, as in "HTTP/1.1 200 OK".

  • A. Correct. For example, "GET /docs/index.html HTTP/1.1".
  • B. These are the elements of the first line of a response (the status line).
  • C. The IP address is carried in the IP header and the port number in the TCP header; they are not part of the HTTP request line.
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