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a) World Wide Web
This refers to a system with universally accepted standards for storing, formatting and displaying
information in a networked environment. Information is stored as electronic “pages” that contain
text, graphics, animations, sound and video.
i) Protocol:
It refers to a set of communication rules for exchange of information. Protocols define speeds
arid modes for connecting one computer with another computer. An example of communication
protocols is the Open System Interconnection (OSI) set of communication protocols which are
used to identify functions provided by any network and to separate each network function into
seven ‘layers’ of communication roles. . '
ii) Protocols used in World Wide Web
Simple Mail Transfer Protocol (SMTP)-used with the TCP/IP suite. It has traditionally been
limited to the text-based electronic messages.
Transmission Control Protocol/Internet Protocol - are the rules for communicating over the
internet, a message is broken down into small parts called packets before it is sent over the
Internet. HyperText Transfer Protocol-HTTP defines how messages are formatted and
transmitted, and what actions Web servers and browsers should take in response to various
commands FTP (File Transfer Protocol) - allows you to copy files on the Internet or download
where you copy a file from an internet to your computer
(iii) Ways of accessing web pages
1. Search tools: Search tools developed for the Internet help users locate precise
information. The search tools can be accessed from the web.
2. Indexes: These are web directories that have organized information which is in
categories such as education, health etc. the categories are further organization into sub
categories where one can search further until the desired document appears. Such
indexes are Yahoo, Ask etc.
3. Applets and Java: Web pages contain links to special programs called .applets written in
a programming language called Java. Java applets are widely used to add interest and
activity such as interactive games, graphics, animation etc. to a website.
Search engines: This are organized like a database and are also known as web spiders or web
crawlers. These databases are maintained by special programs called agents, bots or spiders.
Widely used search engines are Google, AltaVista and HotBot.
Kavungya answered the question on May 14, 2019 at 09:14
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Date posted: May 14, 2019. Answers (1)
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Date posted: May 14, 2019. Answers (1)