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Q. Explain Frequency-division multiplexing?
Frequency-division multiplexing (FDM) is a technique for data transmission widely used in telephone, radio, and cable TV systems in which the transmission frequency spectrum (i.e., bandwidth) is divided into smaller bands known as subchannels.
Data transmission between two stations can be achieved in either simplex, half-duplex, or full-duplex mode. In a simplexmode,mainly used in radio and TV broadcasts, information travels only in one direction. Thismode is rarely used in data communications. In half-duplexmode, used by radio communications, information may travel in both directions, but only in one direction at a time. The transmitter becomes the receiver and vice versa. In a full-duplex mode, information may travel in both directions simultaneously. This mode, used in telephone systems, adopts two different carrier frequencies.
Q. When an object travels with constant velocity does its average velocity during any time interval differ from its instantaneous velocity at any instant? Answer:- No It i
In a subscriber loop that contains a series resistance of 300 ohms to protect the batteries in the exchange, a normalized telephone draws 10 mA and its standard input d.c. resistan
Explain in detail about the Random Scan Display This device using CRT directs the electron beam only to the parts of the screen where a picture is to be drawn. This kind of d
Classic form of OLAP is called as MOLAP and it is often known as OLAP. Simple database structures like time period, product, location, etc are used. Functioning of each and every d
Algorithm to insert a key in B-tree is as follows: 1. First search is completed for the place where the new record must be put. As the keys are inserted, they are sorted into
Common channel signalling ? Common channel signalling requires no additional transmission help or facilities.
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Q. Illustration of a demon program? When the PVM initialize it inspects the virtual machine in that it's to operate and creates a process known as PVM demon or simply pvmd on e
In this segment, we will give very brief details of registers of a RISC system known as MIPS. MIPS is a register-to-register or load/store architecture and employs three address
Q. What is Hypercube Network? The hypercube architecture has played a significant role in development of parallel processing and is quite influential and popular. The highly sy
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