IRIS EDUCATION

Transmission Media Transmission media means to send the data from one place to another place through some medium like wire or wireless. The transmission media or medium can be classified into two categories Wired Transmission Media and Wireless Transmission Media. Wired Transmission Media Wired transmission media or medium uses wires or cables to transmit data from one place to another place. In this type of medium we use wires or cables. The data is transferred in the form of electrical or light signal. There are various types of cables that can be used for setting up a network. Some of them are as follows: Twisted Pair Cable Twisted pair cable was invented by Alexander Graham Bell in 1881. It is the most widely used medium for telecommunication. It consists of copper wires that are twisted into pairs. An ordinary telephone wire consists of two insulated copper wires twisted into pairs. Computer networking cables consists of four pair of copper wire that c...

Difference between Internet and Intranet? Internet refers to a global network that connects a large number of computers, by using routers. All computers on the internet communicate with one another using the Transmission Control Protocol/Internet Protocol (TCP/IP). Intranet is similar to internet but they differ in size and ownership. Intranet is also a computer network (especially LAN) which is privately owned by a particular individual or an organization. Intranet uses TCP/IP for sending and receiving information but it is accessible to organization members only.

What is Internet? Internet refers to a global network that connects a large number of computers, by using routers. All computers on the internet communicate with one another using the Transmission Control Protocol/Internet Protocol (TCP/IP). Evolution of Internet The foundation of the internet was given in the year 1969 when the US Department of Defence sponsored a project to connect itself with the different universities to share information with their colleagues in other U.S. cities. The project was named ARPANET (Advanced Research Projects Network) .The main motive behind this project was to develop a secure network that survives and works even after nuclear attack. By 1971 there were 30 universities participating in ARPANET. Computers in ARPANET use certain rules to communicate with each other. These set of rules are termed as Protocols. The protocol used by ARPANET was NCP (National Control Protocol). By the time NCP was out of use and TCP/IP came into the world of net...

What is computer network? A computer network is composed of multiple computers connected together for the purpose of communication, sharing data and resources, etc. The computers in a network may be linked through cables, telephone lines, radio waves or infrared light beams. Advantages of computer network: Communication - People use networks to communicate with each other by exchanging messages and information. We can take the example of a whatsapp group, video conferencing software like imo, skype, google duo, etc. In this type of software each all of us are connected with each other sharing our ideas, thoughts, discussing some topics, etc. Sharing of hardware resources - Networking of computers enables users to share hardware resources like scanners, printers, etc. Eg. Suppose there are two computer systems in your house if you want to give print then you need a printer. So what would you do, you will buy two printers for the two computer, no you will not do this because...