Compare the WAP architecture with OSI model.
The Wireless Application Protocol (WAP) architecture and the Open Systems Interconnection (OSI) model are both frameworks that provide a structured approach to understanding and implementing communication protocols, but they serve different purposes and operate in different contexts.
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What approach is followed in practice for the choice of a propagation medium for any communication system? Why is a linear medium of propagation preferred?
Explain the image frequency and double spotting phenomena in case of AM receivers. How can they be overcome?
A plane wave is described by an electric field
What is its (i) frequency in Hz, (ii) wave number, (iii) phase velocity, (iv) wavelength, and (v) direction of propagation?
Explain the construction of a Schottky diode and state its advantages over normal p-n junction diode.
Explain, how digital coding can help in overcoming the burst error noise in signal transmission.
State with reasons whether the following statements are True or False.
i) Rise time of a pulse is the time required for the amplitude to reach from 0% to 100% of the peak amplitude value.
ii) All types of device noise are white noise.
iii) Standing wave ratio of a matched transmission line is infinite. iv) Frequency modulation index mf is independent of carrier frequency.
v) Frequency shift keying is modulation of digital carrier signal with an analog intelligent signal.
vi) In superheterodyne receiver the local oscillator always operates at a fixed frequency.
vii) The depth of LCD TV depends on the size of its screen.
viii) Waveguide attenuator causes rotation of plane of polarization of the wave.
ix) Token ring protocol suffers with the data collision problem.
x) WAP helps in connecting devices without cables.
Compare the WAP architecture with OSI model.