QUESTION 7 1. In order to convert an analog signal to a bit stream, what are the basic three sequential operations to be used ? 1. 3. 2 points QUESTION 8 1 . Base-band data transmission is used when the channel type is low-pass band-pass wireless pass-band 1 points QUESTION 9 1. White noise has power spectral density. Constant & Variable Variable O None of the mentioned C Constant1. A random process is a collection of random variables. True C False 1 points QUESTION 2 1. A stationary random process has statistical properties which change with time. C True False 1 points QUESTION 3 1. A random process is ergodic if the if the time average always converges to the statistical average. C True False 1 points QUESTION 4 1. A wide sense stationary (WSS) process has a mean and autocorrelation function which do not change with time. C True C False QUESTION 5 1. The power is the value of the autocorrelation at 0. C True C False 1 points QUESTION 6 1. For a large number of different physical phenomena in which the observed random variable, at a particular instant of time is the result of a large number of individual random events, it is modlled as: Uniform distributed process Rayleigh distributed process Binomial distributed process Gaussian distributed process