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Data Communication: Communication means the exchange of information or messages. When we talk with each other, we are exchanging information. Data communication can be defined as: “By using the transmission…
Data security: Security is a defending system to protect a computer system and data from planned or accidental damage or access by unauthorized persons. The data stored on a computer…
A computer network is an interconnection of a group of computers while Internet is a worldwide system of interconnected networks and computers. History of Internet: In 1969, Advanced Research Project…
A group of individuals working together on a given project, sharing information through computer networks is known as workgroup. Workgroup are used for small Local Area Networking in homes, schools,…
An operating system is a collection of system programs that controls and co-ordinates the overall operations of a computer system. Memory, processes, hardware and software of a computer are managed…
The modern age is the age of Information Technology. The computer technology has importance in every field of life. With the help of IT, all departments of life and organization…