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Error Detecting Code - Parity bit:
The general idea for achieving error detection and correction is to add some redundancy (i.e., some extra data) to a message, which receivers can use to check consistency of the delivered message, and to recover data determined to be erroneous. An error-detection scheme may be combined with a system for retransmissions of erroneous data
A parity bit is a bit that is added to a group of source bits to ensure that the number of set bits (i.e., bits with value 1) in the outcome is even or odd. It is a very simple scheme that can be used to detect single error in the output.
Fig. Transmit data using a parity bit
Q. How two adjacent layers communicate in a layered network or what do you understand by Service Access Point? Ans: In layered network, each layer has several entities and enti
IPv6 The internet engineering task force begin the effort to develop a successor protocols to IPv4 in the early 1990 is an internet layer protocols for packet switched
Router(config)# interface serial1/0
The Physical layer deals with the definite physical medium and the method of transporting 1s and 0s.
how to security net
How do we explain the method of DPU, Segments, Datagram, Frame and packet?
a) Used for sending e-mail. b) Uses port 25.
Brigdes Introduction - LAN may require to cover more distance than the media can handle effectively or - Number of stations may perhaps be too great for efficient frame d
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Q. Show the Character-level Encryption? - Substitutional - Monoalphabetic - simplest form; also called Caesar cipher - Every character is replaced with another character
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