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Tribhuvan university > CSIT - 2074 Syllabus > Web Technology > Old Questions > 2076

Web Technology - Old Questions

Syllabus Notes Old Questions Unit Wise Questions Question Bank

8.  Describe HTTP with its header fields.

5 marks | Asked in 2076

HTTP is a TCP/IP based communication protocol, that is used to deliver data (HTML files, image files, query results, etc.) on the World Wide Web. The default port is TCP 80, but other ports can be used as well. It provides a standardized way for computers to communicate with each other. HTTP specification specifies how clients' request data will be constructed and sent to the server, and how the servers respond to these requests.

HTTP header fields provide required information about the request or response, or about the object sent in the message body. There are four types of HTTP message headers:

  • General-header: These header fields have general applicability for both request and response messages.
  • Request-header: These header fields have applicability only for request messages.
  • Response-header: These header fields have applicability only for response messages.
  • Entity-header: These header fields define meta information about the entity-body or, if no body is present, about the resource identified by the request.

All the above mentioned headers follow the same generic format and each of the header field consists of a name followed by a colon (:) and the field value as follows:

    message-header = field-name ":" [ field-value ]