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COMMUNICATION CHANNELS:
A wire pair connecting two telephones is the simplest circuit, allowing communication in both directions. Other channels include coaxial cables, optical fibres, satellites, a light beam, microwaves, and others. Whatever the physical medium over or through which message travels, transmission may take place in a number of different modes. They are :
Simplex Half-duplex and Full-duplex. Simplex In this type of channel, the message travels in only one direction, that is from point A to point B but not back again.
Half-Duplex: Transmission can take place in either direction, but not at the same time. In other words, message can be transmitted either from A to B or by B to A one at a time.
Full-Duplex: In this type of arrangement messages can be transmitted and received over the same channel at the same time. Many librarians and information scientists are familiar with the latter two types because database search terminals must be set to transmit full or half duplex in order to communicate with database vendors' computers.
write an essay explaining the following: 1.Storage aspects a. Disk formatting, b.Disk boot block ,c.Bad block removal, d.Compensation.
Write a C++ program that declares three integers and three strings. The program prompts the user for three characters and three integers and prints them all on one line.
benefit a company derive from managing it own information technology
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im student of BSCS 1st semester and I have to make project for IT fair and I dont know computer that very much so please I required your help, help me if you can. thanks
Round robin (RR) is one of the simplest, oldest, fairest and most extensively used algorithms. • In the round robin scheduling, processes are posted in a FIFO manner but are given
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architectural design
Algorithm : 1. Read the values of principal amount, time and rate of simple interest into the locations labelled as P, T, R. 2. Set the count T to 1 implying the end of a year. 3.
Client/ Server Architecture: As the capacity and power of personal computers improved, the need to share the processing demands between the host server and the client workst
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