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Consider a system connected as shown in the figure below.

1. System S1 generates a random number (R1) between 0 and 10 and sends it to S2.

2. System S2 generates a random number (R2) between 0 and 10 and sends the value

R1+R2 to S3.

3. System S3 generates a random number (R3) between 0 and 10 and sends the value

R1+R2+R3 to S4

4. System S4 generates a random number (R4) between 0 and 10 and sends the value

R1+R2+R3 to S1

5. If the value received by S1 is less than 30 and greater than 25 then stop the system

as follows

a. S1 sends the word stop to S2.

b. S2 send the word stop to S3 and closes all sockets and I/O ports and

c. S3 send the word stop to S4 and closes all sockets and I/O ports and

d. S4 send the word stop to S1 and closes all sockets and I/O ports and

e. S1 closes all sockets and IO ports

f. S1 prints the final value received at S1 (R1+R2+R3+R4)

g. S1 prints the number of times the process was repeated

6. If the value received by S1 is greater than 30 or less than 25 then repeat the

process starting at point 1 above.