(a) Explain what asynchronous transmission is and give two advantages and two disadvantages of using this type of transmission.

(b) One of the goals of multiplexing is efficiency.

(i) Explain what is multiplexing and how does it improve system design.
(ii) Give any two applications of Frequency Division Multiplexing (FDM).
(iii) Ten signals, each requiring 4000 Hz are to be multiplexed together using

FDM. What is the minimum bandwidth of the link if there is a need for a guard band of 400 Hz between the channels to prevent interference?

(c) Explain the operation of the Stop and Wait flow control protocol and give one disadvantage of using this protocol.

(d)  Two adjacent nodes (A and B) use a  sliding window protocol  and a 3-bit sequence number. As the  ARQ  mechanism,  Go-Back-N  is used and the window size is 4. Assuming that  A transmits and B receives,  by using appropriate diagrams  and giving appropriate explanations,  show the window positions for the following succession of events:

(i) Before A sends any frames.

(ii) After A sends frames 0, 1, 2 and B acknowledges 0, 1 and the ACKs are received by A.

(iii) After A sends frames 3, 4, 5 and B acknowledges 4 and the ACK is received by A

Posted Date: 10/22/2013 5:49:13 AM | Location : United States

Ask an Expert

Related Discussions:- Stop and wait flow control protocol, Assignment Help, Ask Question on Stop and wait flow control protocol, Get Answer, Expert's Help, Stop and wait flow control protocol Discussions

Write discussion on Stop and wait flow control protocol
Your posts are moderated

Write your message here..

Related Questions

What is induction machines, Q. What is Induction machines? We shall fir... Q. What is Induction machines? We shall first consider polyphase induction motors and then single-phase induction motors. The polyphase induction motors used in industrial appl

Variable frequency systems , Variable Frequency  Systems In this  sys... Variable Frequency  Systems In this  systems the chopping period  T will varying but  either Ton is kept constant or T off kept constant. In  any case the off  time T off   w

Calculate the analog output voltag, For the 3-bit 2 n -R D/A converter of ... For the 3-bit 2 n -R D/A converter of Figure, calculate the analog output voltage when the input is (a) 100, and (b) 010. Solution a. For the binary input 100, switches con

Matlab antenna diversity, please I need help in matlab to program complex e... please I need help in matlab to program complex expression in antenna diversity please

Notations that are used in transistor circuits -h parameters, Notations tha... Notations that are used in transistor circuits:-             h ie = h 11e = Short circuit input impedance             h 0e = h 22e = Open circuit output admittance

Explain the delay model, Explain the delay model based on logical effort of... Explain the delay model based on logical effort often used in estimating delays in logic cells. Hence use the model to predict the delay of a 4-input NOR logic cell with a 3 times

Determine the laplace transform of the given functions, Q. Determine the La... Q. Determine the Laplace transform for each of the following functions from the basic de?nition of Equation. (a) f 1 (t) = u(t) (b) f 2 (t) = e-at (c) f 3 (t) = df (t) dt,

Bomb calorimeter, function of bomb calorimeter function of bomb calorimeter

Obtain the waveforms, Q. (a) Consider a diode circuit with RC load as shown... Q. (a) Consider a diode circuit with RC load as shown in Figure. With the switch closed at t = 0 and with the initial condition at t = 0 that vC = 0, obtain the functional forms of

Illustrate in detail b-spline and cubic bezier surfaces, Define ruled surfa... Define ruled surface and surface of revolution. Illustrate in detail B-spline and cubic Bezier surfaces with their important properties.