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Explain at least one modulation technique used for high speed modems.
FSK - Frequency Shift Keying: In such technique the frequency of the carrier signal is changed as per to the data. The transmitter sends various frequencies for a "I" than for a "0" as demonstrated in figure. The disadvantages of this technique are which again (like this was with amplitude modulation) the rate of frequency changes is restricted by the bandwidth of the line, and which distortion caused by the lines makes the detection still harder than amplitude modulation.
FIG - FSK
Develop a regular expression for Real number with optional fraction and Identifier. (i) A regular expression for real number with optional fraction is [+ | -] (d) +. (d)* (i
Proof by Contradiction: Now for forward chaining and backward chaining both have drawbacks. But another approach is to think about proving theorems by contradiction. So we can
Differentiate between validation and exception testing. - Validation testing is done to test software in conformance to requirements specified. It aims to demonstrate that soft
detail explanation
Direct inward dialling is used as a feature in? Direct inward dialling is utilized as a feature in EPABX.
SS7 Protocol uses: (A) Out of band signalling. (B) Associated signalling. (C) Speech control signalling. (D) No signalling. Ans: SS7 Protocol uses Out of
Now that the user's command has been parsed into an array of char*, we can pass this to the OS to execute the command. To execute the command, use the execvp() function from unis
Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b
Define Congestion. Congestion: This is uneconomic to give sufficient equipment to carry all the traffic which could possibly be offered to a telecommunication system. Inside
To avoid race condition, the maximum number of processes that may be simultaneously inside the critical section is The maximum number of processes is one to ignore race conditi
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