Osmania University (OU) 2009-2nd Year M.C.A Computer Aplications II Semester (Main) , - university paper

Code No.817
FACULTY OF INFORMATICS

M.C.A II Year II Semester (Main) Examination, May 2009

Subject : COMPUTER NETWORK
Time : three Hours Max. Marks : 80

Note : ans 1 ques. from every Unit. All ques. carry equal marks.

UNIT - I

1. (a) Compare virtual circuits and Datagram Subnets. [Marks : 8]
(b) What is traffic shaping and illustrate any 1 congestion control Algorithm? [Marks : 8]

OR

2. (a) What is connection-Oriented Service and connectionless Service. Briefly overview five
service primitive for implementing a simple connection - oriented service. [Marks : 8]
(b) What is Optimality principle and discuss any two routing algorithm with an example?[Marks : 8]

UNIT - II

3. (a) describe Internet working and define how networks differ. [Marks : 8]
(b) explain Gateway routing protocols.

OR

4. (a) What is unneling and Firewalls ? discuss. [Marks : 8]
(b) provide Ip address formats and range of IP address in every class. provide also a few example IP addresses. [Marks : 8]
UNIT -III

5. (a) How is connection released in Transport layer? [Marks : 8]
(b) discuss TCP segment Header. [Marks : 8]

OR

6. (a) explain the concept of flow control and buffering in detail. [Marks : 8]
(b) What is UDP and discuss the structure of ATM adaptation layer? [Marks : 8]

UNIT - IV

7. provide an overview of socket interface and socket addresses. [Marks : 16]

OR

8. (a) discuss I/O multiplexing. [Marks : 8]
(b) explain Internet super server. [Marks : 8]

UNIT - V

9. (a) discuss about Traditional Crypotography. [Marks : 8]
(b) Write briefly about DNS and discuss fuctionality of DNS protocal. [Marks : 8]

OR

10.(a) explain RSA algorithm with a suitable example. [Marks : 8]
(b) discuss e-mail architecture. [Marks : 8]

Earning:   Approval pending.