Ict Notes
The Internet and the world wide web * Internet- is a big network connecting different networks to facilitate communications and transfer of information. * Network- a group of computers that are connected to each other or to a central server so that they can exchange data and programs rapidly and share software and hardware resources , such as documents, hard disk space or printers.
Types of Networks * Local Area Network(LAN)- it is a single site computer network. It consists of as few as two and as many as 500 personal computers or work stations connected by cables within a small geographic area to a special server called the server. * Metropolitan Area Network(MAN)- it is a computer network covering a wide geographical area but not limited to a city. It can include two or more LANs. * Wide Area Network(WAN)- the largest network that uses high speed telephone lines, fiber optic connections, or microwaves to link computers that can be thousands or miles apart.It may even incorporate connections through orbiting satellites.
Things Needed To Get Connected To the Internet 1. Modem – it is a communication device that enables the computer to exchange information over a telephone lines, a cable, a satellite, or radio frequency. 2. Web Browser Software – it is an application program that allows you to view and use the Web page. 3. ISP (Internet Service Provider)- it is a business that provides internet access to individuals, schools, and businesses. * It offers direct and fast access to the internet as well as the software you need to get connected. * It provides Net access using several types of connection.
TYPES OF INTERNET CONNECTIONS 1. Dial- up Connection- it is a type of internet access that is economical but slow. * Uses a modem and a telephone line to dial to an ISP which will establish a link between your computer and the internet. 2. DSL (Digital Subscribers Line)- A Net connection that uses a DSL
Types of Networks * Local Area Network(LAN)- it is a single site computer network. It consists of as few as two and as many as 500 personal computers or work stations connected by cables within a small geographic area to a special server called the server. * Metropolitan Area Network(MAN)- it is a computer network covering a wide geographical area but not limited to a city. It can include two or more LANs. * Wide Area Network(WAN)- the largest network that uses high speed telephone lines, fiber optic connections, or microwaves to link computers that can be thousands or miles apart.It may even incorporate connections through orbiting satellites.
Things Needed To Get Connected To the Internet 1. Modem – it is a communication device that enables the computer to exchange information over a telephone lines, a cable, a satellite, or radio frequency. 2. Web Browser Software – it is an application program that allows you to view and use the Web page. 3. ISP (Internet Service Provider)- it is a business that provides internet access to individuals, schools, and businesses. * It offers direct and fast access to the internet as well as the software you need to get connected. * It provides Net access using several types of connection.
TYPES OF INTERNET CONNECTIONS 1. Dial- up Connection- it is a type of internet access that is economical but slow. * Uses a modem and a telephone line to dial to an ISP which will establish a link between your computer and the internet. 2. DSL (Digital Subscribers Line)- A Net connection that uses a DSL