Dear candidates you will find MCQ questions of Computer Architecture and Organization here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: a base-band signal can be up- converted to band-pass filter by applying cosine wave.
Explanation: for down-conversion of a band-pass signal also cosine signal is used and multiplied with it.
Explanation: downconversion of bandpass signal includes multiplication with sine wave followed by low pass filtering.
Explanation: fourier transform of a signal give the frequency content and also determines the bandwidth of the signal.
Explanation: some of the random things in the communication system are noise in the channel, attenuation, fading, channel filtering, device frequency, phase and timing offset.
Explanation: fourier series is limited to only periodic signals where as fourier transforms and laplace transforms can be used for both periodic and non periodic signals.
Explanation: a band-pass signal has a fourier transform equal to zero for all value in both frequency and time domain.
Explanation: a band-pass signal has no dc components and has fourier transform equal to zero. outside the band it will not be exactly zero. thus this results in presence of side lobes.
Explanation: an ad-hoc wireless network is a decentralized kind of a wireless network. an access point is usually a central device and it would go against the rules of the ad- hoc network to use one. hence it is not required.
Explanation: csma/ca stands for carrier- sense multiple access/collision avoidance. it is a multiple access protocol used by ieee
Jump to