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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.
Define the term- Verification It is a way of preventing errors when data is copied from one medium to another (for instance from paper to disk/CD or from memory to DVD, etc.).
Telephone companies normally provide a voltage of to power telephones? Telephone companies usually give a voltage of to power telephones -48 volts DC.
What are the user interfaces of interactive lists? If you require the user to communicate with the system during list display, the list must be interactive. You can describe
What''s is a lissajious pattern?
what is boot blocks
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Assume that you are working in a software company as a programmer and a bank is your company's client. The Bank is a most popular and one of the leading banks in Malaysia. Your
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How many "true" terrorists are there in the US? I don't know, but let's suppose that there are 3000 out of a total population of, say, 3,000,000. That is, one person in 100,000 i
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