Discuss in brief the following terms
i) Telnet ii) http (hypertext transfer protocol) iii) Remote login
i) Telnet:
It is a terminal emulation program for TCP/IP networks such as the Internet. The Telnet program runs on your computer and connects your PC to a server on the network. One can then enter commands through the Telnet program and they will be executed as if you were entering them directly on the server console. This enables one to control the server and communicate with other servers on the network. To start a Telnet session, one must log in to a server by entering a valid username and password. Telnet is a common way to remotely control Web servers.
(ii) Http :
Hyper Text Transfer Protocol; The WWW protocol that performs the request and retrieve functions of a server. Commonly seen as the first part of a website address It is the communication protocol used to connect to servers on the World Wide Web. The primary function of HTTP is to establish a connection with a Web server and transmit HTML pages to the user's browser.
(iii) Remote Login
A login that allows a user terminal to connect to a host computer via a network or direct telecommunications link, and to interact with that host computer as if the user terminal were directly connected to that host computer Gives the same functionality of telnet, with the added functionality of not requiring a password from trusted clients, which can also create security concerns. Protocols such as TELNET and RLOGIN were developed for terminal users to use their terminals as if they were directly connected to a remote system. UNIX systems, with their predominately terminal-oriented interface, still make heavy use of these protocols.
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