1.1 Communicating in a Network-Centric World

Human interact in different ways and they need to development a new methods to express their daily live needs.

A computer networks play a central role nowadays to facilitate the communications amongst humans.
The development of the personal computer brought about tremendous changes for business, industry, science, and education.

They support us in many different ways:

1.1 In Live

People communicated by talking; uses the telephone, the postal messages, or the television broadcast.
Although, each of these methods is still working, but all three of them are converging into web-based communication technologies.

Technological advances are making it possible for communications links to carry more and faster signals.
As a result, services are evolving to allow use of this expanded capacity. For example, established telephone services such as conference calling, call waiting, voice mail, and caller ID have been extended.

1.1 Communicating in a Network-Centric World

The existence of the Internet has leads in new forms of communication tools include:

	instant messaging,
	blogs,
	podcasts and
	wikis

1.2 In Learn
The advances in the Internet and collaboration tools have been the force behind major changes in education.

Distance education was once limited to correspondence, videos, or video and audio conferences. With newer collaboration tools and stronger web technologies:

	Online learning can engage remote students in interactive learning and real-time assessment.
	Students can communicate with the instructor and fellow students using online tools like
	e-mail, bulletin/discussion boards, chat rooms, and instant messaging.
	Networks have improved the management and administration of courses as well. Some of
	these online functions include enrollment, assessment delivery, and grade books.

1.1 Communicating in a Network-Centric World

1.3 In Business

	Many companies have decided to connect their different computers to be able to extract and correlated
	information about the entire company.
	Advances in computer networks have had a tremendous impact on businesses.

Resource sharing.

			Its goal is to make all programs, equipment, and especially data available to anyone on the
			network without regard to the physical location of the resource and the user.

Powerful communication medium.

Different companies use different types of networks:

		Employees can meet on the Internet, or they can join a restricted group on a company intranet,
		which allows only internal employee access.
		Another type of network is an extranet, a type of network that allows outside vendors special
		access to limited information in a company.

1.1 Communicating in a Network-Centric World

	E-commerce is another area of business that is starting to become more important to do business
	with consumers over the Internet. Airlines, bookstores, and music vendor.

1.4 In Play
Online game companies are constantly pushing for better bandwidth and faster processing to improve their products, and online gamers are willing to spend the money necessary to buy the latest equipment that will improve their gaming experience.

	Movie rentals, video-sharing and distribution systems are newer web technologies that are
	quickly evolving as faster web connections become more widespread.