Quesetion Paper of CS-69: TCP/IP Programming

Ql(i) Describe a typical name resolution process in DNS?

(ii) List some important features of data link layer and network layer.

(iii) Outline the detailed procedure for routing a packet in the TCP/ IP network.

(iv) How does TCP handle multiplexing issue?

Ql(v) Show by calculation how many networks (not hosts) each IP address class (A, B and C only) can have with one example each.

Ql(vi) show by calculation how many host per network each IP address class (A, B, and C only) can have with on example each.

Quesetion Paper of CS-69: TCP/IP Programming

Ql(i) Design client/server algorithm using the UDP protocol. The algorithm should have UDP client and UDP server. The client should prompt a user to type a line of text, send it to the server and print it out. The server should simply act as a simple echo server. After responding to the client, the server closes the connection and then waits for the next new connection.

(ii) Identify the address class of the following IP address.
16.196.128.50 and 150.156.10.10

(iii) Make a brief description of each field of IP datagram.

Quesetion Paper of CS-69: TCP/IP Programming

Ql(i) Identify the address class of the following IP addresses:
.210.58.20.165
.128.167.23.20

(ii) Identify the range of IPv4 addresses spanned by Class A, Class B, and Class C.

(iii) Design a algorithm for making a TCP client that sends a message to a specified Time Server for finding out time of a particular country. Also design an algorithm for TCP Server.

(iv) List the main difference between TCP and UDP.

Quesetion Paper of CS-16: Object Oriented Systems

Q.l(a)Draw a class diagram with two classes, Teacher and Course. Add at least 4 attributes and 2 operations for both the classes. Explain the classes and associations, if any. Assume that a teacher can teach many courses and a course can be taught by many teachers. Further, assume that a teacher teachs a minimum of one course and a maximum of one teacher and a maximum of many teachers. Make assumptions, whereever necessary.

Q.l(b) Prepare a list of objects that the following system will handle:

Q.l© Define the following terms, giving at least one exampli of each:

(i) Abstraction
(ii) Information hiding
(iii) Sharing
(iv) Over-riding

Q.l(d) What are the features of C++ that make it suitable for object oriented implementations?

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Quesetion Paper of CS-16: Object Oriented Systems

Q.l(a) Draw a class diagram with two classes, Hospital and Patient. Add at least 4 attributes and 2 operations for both the classes. Explain the classes and associations, if any. Assume that a patinent can consult many hospitals, and that a hospital can provide consultation for many patients. Further, assume that a hospital can provide consultation for a minimum of zero and a maximum of many patients, but a patient must consult in at least one hospital, but possibly many hospitals.

Q-1.(b) Express the following as a constraint that is to be enforced in an application which handles points and polygons: Points are associated with polygons. Every point belongs to exactly one polygon. You do not want a polygon to be linked to a point that has been deleted.

Q. 1 © Define the following terms, giving one example of each:
(i) Virtual functions
(ii) Inheritance
(iii) Function overloading

Q .l(d) List three advantages of object oriented systems.

Quesetion Paper of CS-16: Object Oriented Systems

Qns. l (a) Define the following terms with examples :
i. Interaction Diagrams
ii. Object Model
iii. Data Abstraction

Qus l(b) Design a Circular Doubly Linked List Class. The class should include all functionalities relating to a Circular Doubly Link Creation, Insertion, Deletion and Printing of elements etc. Do the following while designing classes.

1. Indicate Public and Private elements
2. Design constructors
3. Identify data structures and methods, which can be inherited.
4. Implementation should be in C++

Quesetion Paper of CS-16: Object Oriented Systems

Qusl(a) Define the follofing terms with examples:

a. Class
b. Inheritance
c. Polymorphism
d. Overloading

Qnsl(b) Imagine a toll booth at a bridge. Cars passing by the booth are expected to pay a toll of five rupees. Mostly they do but sometimes a can goes by without paying. The toll both keeps track of the total number of cars that have gone by and the total amount of money collected.

Model this tollbooth with a class called TOLLBOOTH. The two data items are of a type unsigned into to hold the total number of cars, and of a type double to hold the total amount of money collected. A constructor initializes both these to zero. A member function called PAYINGC AT () increments the car total and adds 5 to the cash total. Another function, called NO_PAY_CAR() increments the car total but ads nothing to the cash total. Finally a member function called DISPLAY ( ) displays the two totals.

Qus l© Design a template class for sorting a list of elements.

Quesetion Paper of CS-16: Object Oriented Systems

Ql (a) Define the following terms with examples

(i) Short-circuit evaluation
(ii) Operator overloading
(iii) Friend classes and
(iv) User defined types functions

Qusl(b) Design a CALCULATOR class. The class should include functionalities like addition subtraction, multiplication and division etc.

Observe the following while designing classes

-Clearly indicate Public and private elements.
-Design Constructors and explain their purpose.
-Identify data structures and methods which can be inherited.
-Implementation should be in C++.

Quesetion Paper of CS-16: Object Oriented Systems

Qusl(a)Define the following terms with examples:

(1) Multiple Inheritance
(2) Abstract Class
(3) Multi-level Inheritance
(4) Pure Virtual Functions.

Qusl(b) Design a circular linked list class. The class should include all functionalities relating to a circular linked list like creation, selection of elements, insertion, printing of elements etc. Observe the following while designing classes: [15]

1. Clearly indicate public and private elements
2. Design constructors and explain their purpose
3. Identify data structure and methods, which can be inherited.
4. Implementation should be in C + +.

Quesetion Paper of CS-16: Object Oriented Systems

Qusl(a) For each of the following systems
1. Chess Player
2. Remote controlled Machine
3. Electronic type writer
4. Software to mail Merge
5. Telephone answering Machine.

Identify the relative importance of three aspects of modeling:

i. Object Modeling
ii. Dynamic Modeling
iii. Functional Modeling

Explain your answer.

Ql(b) Print out which statements in the following C++ Code fragment violate the access control mechanism for class X of class Y:

class X
{
private:
intl;
void pvt _X();
protected: int j;
void prot _xO;
public: int k;
void pub _X(int, int);
};
class Y: public X
{
char C;
};
Xx;
Yy;
x.i=10;
x.k=15;
y.prot_X();
y.pub_X(5,10);
};

Qnsl© Define the following terms with examples:

i. Abstract Data Type
ii. Polymorphism
iii. Inheritance
iv. Templates

Quesetion Paper of CS-16: Object Oriented Systems

Qus 1(i) Write a program in C++ to implement queue data structure using linked list. It may support the following operations:

(a) Delete a node from queue
(b) Insert a node at the front of queue
© Find out the length of a queue

Qus l(ii) Draw a class and instance diagram for looping statements in C-prograrmming language.
Qns l(iii) A directory file system contains information about files in a directory, including both ordinary files as well as other directory systems, prepare an object diagram which models directory files and ordinary files.

Qus 1 (iv) What is the purpose of dynamic modelling?

Quesetion Paper of CS-16: Object Oriented Systems

Qnsl(a) Define the following terms with examples:
(i) Overloading
(ii) Templates
(iii) Multiple inheritance and Multilevel inheritance
(iv) Base and Derh ed classes.

Ql(b) Define a class for storing, evaluating and printing simple arithmetic expressions consisting of. Integer constants and the operators +, -, * and /. The public interface should look like this:

class expr {
//
public:
expr(char *);
int eval( );
void print( );};
The string argument for the constructor
expr:: expr() is the expression. The function
expr: : eval() returns the value of the expression, and
expr : : print() prints a representation of the expression on the
cout. A program might look like this:
exprx("123/4+123*4-3″);
cout “x =” x eval( ) “n";
x.print( );
Define class expr twice: once using a linked list of nodes as the representation and once using a character string as the representation.

Ql © Design a template class for sorting a list of elements.

Quesetion Paper of CS-16: Object Oriented Systems

Qnsl(a) Define the following terms with examples

(i) Abstract Data Type
(ii) Polymorphism
(iii) Inheritance
(iv) Templates

Qns1(b) Design an AUTOMOBILE base class. Define all its possible Methods and data structures. Through inheritance mechanism, create one c’ass namely CAR, Implement its data structure and important methods.