Computer Science - Class 12
Solutions to CBSE Sample Paper - Computer Science Class 12

(i) Expand the following terms:

    POP3 , URL


Answer by student

  • POP3 - Post Office Protocol version 3
  • URL - Uniform Resource Locator

Detailed answer by teachoo

  • POP3 stands for Post Office Protocol version 3 , which is a protocol for receiving email from a remote server . It is one of the application layer protocols in the TCP/IP model. It downloads and deletes messages from the mail server, so the email can only be accessed from one device and is not stored on the server. POP3 is simple and widely supported, but it lacks synchronization and security features.
  • URL stands for Uniform Resource Locator , which is a web address that specifies the location and mechanism for accessing a web resource . It is also one of the application layer protocols in the TCP/IP model. A URL consists of several components, such as scheme, host, port, path, query, and fragment. The scheme indicates the protocol used to access the resource, the host is the domain name of the web server, the port is the number that identifies the service on the server, the path is the name of the file or directory on the server, the query is a parameter that can be used by the server to process the request, and the fragment is an identifier that can be used by the browser to locate a specific part of the resource.
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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.