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Unformatted text preview: 3. Modify the Simplex-talk program of step 2 so that it uses UDP as the transport protocol rather than TCP. Refer description on page 69, exercise 34 to do this change. 4. The final step is to implement a simple version of Domain Name Server (DNS). This is a highly simplified version and does not have any hierarchy. Given a host name, DNS returns its IP address. Similarly given an IP address, DNS returns a host name. Therefore our DNS is a simple look-up table. It consists of host name strings and corresponding IP addresses. Use UDP version implemented in step 3 to implement the server. Write a basic command line interface to enter data (IP address and host name pairs). Start at least 4 simultaneous clients. Send either host name or IP address to the server. Server will return an appropriate data. Print the results on the screen (file). 5. Document results. Also append modified version of the code. Use a different color to highlight your changes....
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- Fall '11
- IP address, Domain Name System, final result, UNIX MAN pages, client server pair, simplex-talk program