Top 250+ Solved Computer Architecture and Organization MCQ Questions Answer
Q. Bits can be sent over guided and unguided media as analog signal by
a. digital modulation
b. amplitude modulation
c. frequency modulation
d. phase modulation
Q. The portion of physical layer that interfaces with the media access control sublayer is called
a. physical signalling sublayer
b. physical data sublayer
c. physical address sublayer
d. physical transport sublayer
Q. The physical layer provides
a. mechanical specifications of electrical connectors and cables
b. electrical specification of transmission line signal level
c. specification for ir over optical fiber
d. all of the mentioned
Q. In asynchronous serial communication the physical layer provides
a. start and stop signalling
b. flow control
c. both start & stop signalling and flow control
d. only start signalling
Q. The physical layer is responsible for
a. line coding
b. channel coding
c. modulation
d. all of the mentioned
Q. The physical layer translates logical communication requests from the into hardware specific operations.
a. data link layer
b. network layer
c. trasnport layer
d. application layer
Q. A single channel is shared by multiple signals by
a. analog modulation
b. digital modulation
c. multiplexing
d. phase modulation
Q. Wireless transmission of signals can be done via
a. radio waves
b. microwaves
c. infrared
d. all of the mentioned
Q. In the digital communication system, signals in different frequency bands are
a. orthogonal
b. non orthogonal
c. orthogonal & non orthogonal
d. none of the mentioned
Q. Properties of impulse function are
a. symmetry
b. time scaling
c. shifting
d. all of the mentioned
Q. Properties of Fourier transform are
a. duality property
b. time shifting property
c. modulation property
d. all of the mentioned
Q. A base-band signal can be up-converted using
a. sine wave
b. cosine wave
c. filtering
d. none of the mentioned
Q. A band-pass signal can be down-converted using
a. sine wave
b. cosine wave
c. time delayed wave
d. none of the mentioned
Q. In down-conversion multiplication with cosine wave is followed by
a. low pass filter
b. high pass filter
c. bandpass filter
d. bandstop filter
Q. Fourier transform of a signal gives the
a. frequency content
b. bandwidth
c. frequency content & bandwidth
d. none of the mentioned