12. Write a program for congestion control using leaky bucket algorithm.

11. Write a program for simple RSA algorithm to encrypt and decrypt the data.

10. Write a program on datagram socket for client/server to display the messages on client side, typed at the server side.

9. Using TCP/IP sockets, write a client – server program to make the client send the file name and to make the server send back the contents of the requested file if present.

8. Write a program to find the shortest path between vertices using bellman-ford algorithm.

7. Write a program for error detecting code using CRC-CCITT (16- bits).

Implement the following in Java: