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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.
What is the last entry in all BDC tables? In all BDC tables the last entry is to save the data by using the field name BDC_OKCODE and a field value of '/11'.
Coupling and cohesion can be shown using a:- Dependence matrix
Problem 1 (a) List and describe the characteristics of mainframes, minicomputers and microcomputers. (b) Briefly describe what is meant by electronic commerce and what b
With reference to telephone traffic, explain the terms GOS. GOS: in loss systems, the traffic carried through the network is usually lower than the actual traffic offered to
What are condition codes? In many processors, the condition code flags are kept in the processor status register. They are either set are cleared by lots of instructions, so th
The conversation speed of an analog to digital converter is maximum with which technique? Ans. With parallel comparator AD converter technique the conversation speed of an ana
Q. What is Missing offset? The xxxx in machine language for instruction at line 0010 is there since the assembler doesn't know DATA segment location which will be determined at
Discuss the various functions of telephone switching systems. Telephone switching system's functions are as follows: (i) Attending: The system should be continually monito
Q. Show typical microprocessor system architecture? A microprocessor system bus consists of three physical buses: the address bus, the data bus, and the control bus. The types
Inherent addressing Here the address is already built in to the instruction i.e. inherent to the code ABA ; Add A to B and store the answer in A Simple programs using
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