CONTENTS

Course Code                          :           CS-68

Course Title                           :           Computer Networks

Assignment Number             :           BCA(5)CS-68/Assignment/08

Maximum Marks                  :           25

Last Date of Submission       :           30^th October, 2008

All the questions carry equal marks. Answer all the questions.  You may use illustrations and diagrams to enhance applications.

Question 1:     Draw the TCP/IP network architectural model and explain the features of various layers. Also list the important protocols at each layer and describe its purpose. Briefly describe the difference between the OSI and TCP/IP architectural model

Question 2:     How does ATM work? Explain through a diagram. 

Question 3:     (i) Sketch the schematic diagram of your study centre network lab           

                            showing various network devices (Hub, Switches, Routers),                                     

                            servers and nodes.                                                                          

                       (ii) List and describe five examples of LAN and WAN application. 

Question 4:     Differentiate between the followings with the help of diagrams

1)      Hubs and Switches

2)      Transparent and Spanning tree bridge

3)      Basic Rate Interface and Primary Rate Interface.

Question 5:     (i) With the help of diagrams explain the difference between virtual   circuit and datagram network

                        (ii)  List three factors which can cause congestion in the network

Course Code                          :           CS-69

Course Title                           :           TCP/IP Programming

Assignment Number             :           BCA (5)CS-69/Assignment/ 08

Maximum Marks                  :           25

Last Date of Submission       :           30^th October, 2008

This assignment is having five questions. All questions carry equal weightage. Answer all the questions. 

Question 1:    Describe the following:                                                         

(i)           ARP

(ii)         Electronic Mail

(iii)       Error detection & recovery

(iv)       Flow control

(v)         SNMP

Question 2:    Outline the generation of three-way handshaking.                                        

Question 3:     Explain the two main reasons for using layered protocol architecture           for network communication?                                                         

Question 4:     Write a small report to list the features of different application         protocols of TCP/IP protocol suit.                                                  

Question 5:    Draw TCP header structure and describe its fields.              

Course Code                          :           BCS-061

Course Title                           :           TCP/IP Programming

Assignment Number             :           BCA (5)BCS-061/Assignment/ 08

Maximum Marks                  :           25

Last Date of Submission       :           30^th October, 2008

This assignment is having five questions. All questions carry equal weightage. Answer all the questions. 

Question 1:     Describe the following:                                                         

(i)           ARP

(ii)         Electronic Mail

(iii)       Datagram

(iv)       ICMP

(v)         SNMP

Question 2:     Explain the connection oriented & connection less services using     bind, connect, listen & accept system calls.                          

Question 3:     Explain the two main reasons for using layered protocol architecture           for network communication?                                                        

Question 4:     Write a small report to list the features of different application         protocols of TCP/IP protocol suit.                                                  

Question 5:     Design and develop an echo client and a server program using socket                      programming.                                                                        

Course Code                          :           CS-70

Course Title                           :           Software Engineering

Assignment Number             :           BCA (5)CS-70/Assignment/ 08

Maximum Marks                  :           25

Last Date of Submission       :           30^th October, 2008

This assignment is having six questions. Answer all the questions. 

Question 1:     Apply Spiral Model or Waterfall Model for the development of the Railway Reservation System.                                                 (4 Marks)

            Question 2:     Suppose that you have to build a product to determine the inverse of 3.546784 to four decimal places. Once the product has been implemented and tested, it will be thrown away. Which life-cycle model would you use? Give reasons for your answer.                                                                                                                      (4 Marks)

            Question 3:     How can design reviews improve designs? How can design reviews help to educate operators, users, clients, analysts, engineers, coders, and testers? How can design reviews uncover deficiencies in SRS?                                                                                                  (5 Marks)

            Question 4:     Consider a university registration system. The system is to handle student registration for various courses offered by the university as well as for examinations. Identify the risks associated with such a software system.

                                                                                                                                   (4 Marks)

Question 5:     Define Forward Engineering. Define Reverse Engineering. Describe the situations for which they are suitable to apply.                                                                                                                                (4 Marks)

Question 6:     Define Black Box testing. Define White Box testing. Apply them by hand (i.e., You don’t need to use a computer) to any program and write the result.

                                                                                                                       (4 Marks)

Course Code                          :           CS-71

Course Title                           :           Computer Oriented Numerical Techniques

Assignment Number             :           BCA(5)CS-71/Assignment/08

Maximum Marks                  :           25

Last Date of Submission       :           30^th October, 2008

This assignment is having five questions. All questions carry equal weightage. Answer all the questions. 

Question 1:  Solve the following systems of simultaneous linear equations using Gauss elimination method and Gauss-Seidel Method

2x1+3x2+7x3 = 12                                         -----(1)

                        x1-4x2+5x3 = 2                                              -----(2)

                        4x₁+5x₂-12x₃= -3                                            ----(3)

Question 2:     Write a computer program (in C or C++) that computes langrage interpolation polynomials for the function f(x) = Cos(x) at 10 equally spaced   points of the interval [0,2].    

Question 3:     Find the interpolating polynomial of appropriate degree for the data, by Langranges method:

                                                              x₁                 x₂         x₃         x₄          x₅

             y₁             y₂         y₃         y₄        y₅

Question 4:     Find a real root of the equation x3 –x – 1 = 0 using bisection method. Perform three reiterations.

Question 5:     A civil engineer has measured the height of a 10 floor building as 2950 cm. and the working height of each beam as 35 cm. while the true values are 2945 cm. and 30 cm.  Compare absolute and relative error.