CHAPTER 7

CHAPTER 7

WHAT IS TELECOMMUNICATION, NETWORKING AND BUSINESS WORLD

• Telecommunication refers to the exchanges of information by electronic and electrical means over a significant distance.

• Networking is defined as the act of making contact and exchanging information with other people, groups and institutions to develop mutually beneficial relationship, or to access and share information between computers. 

• Business World is regular production or purchase and sale of goods undertaken with an objective of earning profits and acquiring wealth through the satisfaction of human wants. 

3 TYPES OF NETWORKS 

A) LAN 

B) MAN 

C) WAN 

WHAT IS INTERNET 

- Internet is a connecting computer to any other computer anywhere in the world via dedicated routers and serves. When two computers are connected over the internet, they can send and receive all kinds of information such as text, graphics, voice, video and computer programs. 

CLIENT AND SERVER 

- A client send request to a server, according some protocol, asking for information or action, and the server responds. This is analogous to a customers (client) who sends an order (request) on an order form to a supplier (server) who despatches the goods and an invoice. The order form and invoice are part of the "protocol" used to communicate.

WHAT IS SEARCH ENGINES

- A software program that searches a database and gathers and reports information that contains or is related to specified terms. 

- A website whose primary functions is providing a search engine for gathering and reporting information available on the internet or a portion of the internet. 

  

HYPERTEXT  (HTML) Web pages are based on a standard Hypertext Markup Language (HTML).

HYPERTEXT TRANSFER PROTOCOL (HTTP) (HTTP) is the communications standard used to transfer pages on the Web.

UNIFORM RESOURCES LOCATOR( URL) The directory path and document name are two more pieces of information within the web address that help the browser track down the requested pages. This address called a uniform resources locator( URL)

WIRELESS COMPUTER NETWORKS AMD INTERNET ACCESS 

a) bluetooth

- Bluetooth is the popular wireless standard, which is useful for creating small personal area network (PANs). It link up to eight devices within a 10 meter area using lower-power, radio-based communication and can transmit up to 722 Kbps in the 2.4GHz band. 

b) Wifi and Wireless Internet Access 

-Wifi is a wireless networking technology that allows computers and other devices to communicate over a wireless signal. And also Wi-Fi is the standard way computers connect to wireless networks. However, Wi-Fi was used in place of only the 2.4GHz  802.11b standard.

c) WiMax 

- WiMax is the on hottest broadband wireless technologies around today. Wimax system are expected to deliver broadband access services to residential and enterprise customers in an economical way. And also WiMax is a standardized wireless version of Ethernet intended primarily as an alternative to wire technologies (such as Cable modems, ) to provide broadband access to customer premises.