 A directory of Objective Type Questions covering all the Computer Science subjects. Here you can access and discuss Multiple choice questions and answers for various compitative exams and interviews.

 221. SNR (signal to noise ratio) is equals to a. Avg signal power/Avg noise power b. Avg signal power/Avg distortion c. Avg noise power/Attenuation d. Avg Attenuation/Avg distortion

 222. One Picoseconds (PS) is equivalent to a. 10-3 s b. 10-6 s c. 10-9 s d. 10-12 s

 223. We cannot send the digital signal directly to the channel, when the channel is a. bandpass b. Bypass c. baseband d. Low pass

 224. The difference in the delay of the signal may create a difference in a. Phase b. Frequency c. Period d. Decibel

 225. Signal to Noise Ratio is the ratio of the two a. Signals b. Powers c. Noise d. Frequencies

 226. According to Fourier analysis, any composite signal is a combination of sine waves with a. diff frequencies amplitude, and phase b. different frequencies c. same frequencies d. same frequencies with amplitude and phase

 227. How many factors data rate limit depends on a. One b. two c. four d. three
 228. Consider the below figure. What are the bits transmitted for the Unipolar system? a. 01101 b. 11010 c. 10110 d. 01001