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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 class NP. Problems that can be solved in polynomial time by a nondeterministic TM. Contains all problems in P and some problems possibly outside P.
Update the permutation algorithm from the text to obtainthe correct list of permutations even if the string haves repeated letters. For example, if you call ListPermutations on the
What are the different database integrities? Semantic Integrity. Relational Integrity. Primary Key Integrity. Value Set Integrity. Foreign Key integrity and
Q. What do you understand by Scan Codes? A scan code is a code produced by a microprocessor in keyboard when a key is pressed and is unique to key struck. When this code is rec
Give the regular expression of the set of all even strings over the alphabet {a, b} along with at least one of the two substrings aa or bb. As well construct the finite automata wh
Q. Make a generalized program that accepts a number & base, convert it into the given base. Perform necessary validations.
What factors influences the bus design decisions? 1. Data Location: Device selection, address of data with in device( track, sector etc) 2. Data transfer: Amount, rate to
Q. Explain about Diodes? A single pn-junction with appropriate contacts for connecting the junction to external circuits is called a semiconductor pn-junction diode. The fundam
The main I/O used by micro controllers are the parallel ports , the 68HC11F1 has seven 8 bit ports namely Port A,B,C,D,E,F and G . The use of ports depends on the mode configurati
What is the function of an IP packet screening Router? Explain with the help of a diagram. Function of an IP Packet Screening Router: A screening router is the most fund
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