please explain me the following code for stop and wait protocol

clc;

clear all;

disp('SAMPLE INPUT AND OUTPUT: ');

n=input('Number of Frames: ');

frame=1;

while frame<=n

fprintf('Transmitting Frame %d\n',frame);

s=randint(1,1,15);

if s<3

fprintf('TIME OUT\n Re-');

elseif s>6

fprintf('PAK of Frame %d Received\n',frame);

frame=frame+1;

else

fprintf('NAK of Frame %d Received\n Re-',frame);

end

end

[Walter Roberson]

No, that is not what the code does. See my description below.

Answer 1

[Walter Roberson]

The code simply simulates receiving timeouts or PAK or NAK, choosing one of them at random.