#DATA COMMUNICATION AND COMPUTER NETWORKING IN HINDI PDF FREE#
Data Communication And Computer Networks In Hindi Free To Contactįor any type of query or something that you think is missing, please feel free to Contact us. What is the difference between computer networks and network communications Data Communications & Networking, 4th Edition,Behrouz A.
Where he writes how-to guides around Computer fundamental, computer software, Computer programming, and web apps. Such information may be used for charging the users of the network based on their usage of the network resources. These rules define how connections are established, maintained and terminated when two nodes of a network want to communicate with each other. These rules ensure that all the nodes get a chance to use the communication lines and other resources of the network based on the priorities assigned to them. In such a case, a block having error is discarded by the receiver and is retransmitted by the sender. The most common method is to retransmit erroneous message block. It ensures resource sharing and protection against traffic congestion by regulating the flow of data on communication lines. The medium can be wired like twisted pair wire, coaxial cable, fiber-optic cable or wireless like laser, radio waves, and microwaves.īoth sender and receiver follow same protocol s to communicate with each other.ĭata sequencing rules define the method of numbering packets to detect loss or duplication of packets, and to correctly identify packets, which belong to same message. The distance between sender and receiver depends upon the types of network used in between. The location of receiver computer is generally different from the sender computer. It can consist of text, numbers, pictures, sound or video or any combination of these. Hence, it becomes necessary to review and understand these terms and gradual development of data communication methods. Then, there are data communication jargons to contend with such as baud rate, modems, routers, LAN, WAN, TCPIP, ISDN, during the selection of communication systems. The different data communication techniques which are presently in widespread use evolved gradually either to improve the data communication techniques already existing or to replace the same with better options and features. The Figure is an illustration of a simple data communication system.įigure provides a broader view of data communication networks. The facts and information so gathered are processed in accordance with defined systems of procedure.ĭata can exist in a variety of forms such as numbers, text, bits and bytes. The physical connection between networked computing devices is established using either cable media or wireless media. Data Communication And Computer Networks In Hindi Free To Contact Job Search Data communications refers to the transmission of this digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data.
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