Network Basics , Internet and Intranet

ASCII

full form of ASCII is ( American standard code for information interchange)

Computers can understand only the numeric values but , it is not always cantain that all the inputs are given in numeric form. So, there was a need for an encoding system which could convert the text files into numeric values.For this ASCII pronounced as (askee) was developed American standard code for information interchange ). ASCII is an encoding approach , which is a code for representing 128 characters in english into seven bit integers. 95 out of 128 characters are printable which include digits from 0 to 9 lowercase and uppercase letters from a to z and the punctuation symbols. ASCII is used in electronic communication.

NETWORK BASICS

What is Network basics ?

A computer network is a system in which multiple computers are connected to each other to share information and resources

Characteristics of a computer network

• Shares resources from one computer to another
• Create files and store them in one computer, access those files from the other computer connected over the network.
• Connect a printer, scanner, or a fax machine to one computer within the network and let other computer of the network use the machines available over the network.

Internet

It is a world wide/global system of interconnected computer networks. It uses the standard internet (TCPIIP). Every computer in internet is identified by a unique IP address IP adress is a unique set of numbers such as ( 110.22.33.114 ) which identifies a computer location.

Intranet

Intranet is the system in which multiple PCs in intranet are not available to the world outside the internet. Usually each organization has its own internet network and members/employees of that organization can access the computers in their intranet.

Difference b/w internet and intranet

Internet	Intranet
1) Internet is general to PCs all over the world. 2) Internet provide a wider and better access to the large population. 3) Internet is not safe as intranet.	1) Intranet is specified to few PCs. 2) Intarnet is restricted. 3) Intranet can be safely privatized as per the need.

Features of computer network

A list of computer network features is given below:

• Communication speed
• File sharing
• Back up and roll back is easy
• Software and hardware is sharing
• Security