Question

The function given by the equation x(n)=1, for n=0; x(n)=0, for n≠0 is a _____________

(a) Step function

(b) Ramp function

(c) Triangular function

(d) Impulse function

The question was asked during an interview.

Asked question is from Discrete Time Signals in section Discrete Time Signals and Systems of Digital Signal Processing

Answer 1

The correct answer is (d) Impulse function

For explanation: According to the definition of the impulse function, it is defined only at n=0 and is not defined elsewhere which is as per the signal given.