Introduction to data communications and networking

The networks of data communication deal with transferring data between two locations. Data emanates from the source and is then sent to the destination, which is sometimes referred to as a sink. The sort of media across which the signal spreads may be categorized. This Book deals with the transmission of data from source to destination is possible via two means: switching and broadcasting and various protocols involved. Data communications often use the process of serial-transmission--a message is broken down into small data packages and transmitted to its destination. When the message arrives at its destination. Data communications gives you the ability to easily stay in touch with others. Phones, instant messaging, emails and social networking sites all utilize data communications.