PLEASE HELP GUYS NEED TO SEND MY ASSIGNMENT AS SOON AS POSSIBLE. PLZ HELP ME WITH THESE QUESTIONS :-
Q1. What are Microwaves ? Explain their properties.
Q2. What are Switched Communication Networks?
3. How many different phase states are used in BPSK and QPSK?
Q4. Explain the need of layering in the Data Communications Protocols Stack.
Answers
Explanation:
1a:- Microwaves are the waves that radiate electromagnetic energy with shorter wavelength.
Properties :-
They are not reflected by Ionosphere.
They travel in a straight line.
They are reflected by the conducting surfaces. They are easily attenuated within shorter distances.
2a:- A switched communications network transfers data from source to destination through a series of network nodes.
3a:- Binary phase-shift keying" (BPSK) uses two phases, and "Quadrature phase-shift keying" (QPSK) uses four phases.
4a:- Because each protocol module usually communicates with two others, they are commonly imagined as layers in a stack of protocols. The lowest protocol always deals with low-level interaction with the communications hardware. Each higher layer adds additional capabilities.
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