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April 7th, 2015, 08:43 AM
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Model paper for KVS PGT computer science

I am looking for the Kendriya Vidyalaya Sangathan PGT computer science exam question paper . Will you please provide it ?

Here I am providing the list of few questions of KVS PGT computer science exam question paper which you are looking for .

1.(a) What is the difference between Global Variable and Local Variable? 2
(b) Write the names of the header files to which the following belong: 1
(i) strcmp() (ii) fabs()
(c) Rewrite the following program after removing the syntactical errors (if any).
Underline each correction. 2
#include [iostream.h]
class PAYITNOW
{
int Charge;
PUBLIC:
void Raise(){cin>>Charge;}
void Show{cout<<Charge;}
};
void main()
{
PAYITNOW P;
P.Raise();
Show();
}
(d) Find the output of the following program: 3
#include <iostream.h>
struct PLAY
{ int Score, Bonus;};
void Calculate(PLAY &P, int N=10)
{
P.Score++;P.Bonus+=N;
}v
oid main()
{
PLAY PL={10,15};
Calculate(PL,5);
cout<<PL.Score<<”:”<<PL.Bonus<<endl;
Calculate(PL);
cout<<PL.Score<<”:”<<PL.Bonus<<endl;
Calculate(PL,15);
cout<<PL.Score<<”:”<<PL.Bonus<<endl;
}
(e) Find the output of the following program: 2
#include <iostream.h>
#include <ctype.h>
void Encrypt(char T[])
{
for (int i=0;T[i]!='\0';i+=2)
if (T[i]=='A' || T[i]=='E') T[i]='#';
else if (islower(T[i])) T[i]=toupper(T[i]);
else T[i]='@';
}

-2-
void main()
{
char Text[]="SaVE EArtH";//The two words in the string Text
//are separated by single space
Encrypt(Text);
cout<<Text<<endl;
}
(f) In the following program, if the value of N given by the user is 15, what maximum
and minimum values the program could possibly display? 2
#include <iostream.h>
#include <stdlib.h>
void main()
{
int N,Guessme;
randomize();
cin>>N;
Guessme=random(N)+10;
cout<<Guessme<<endl;
}

2.(a) What do you understand by Data Encapsulation and Data Hiding? 2
(b) Answer the questions (i) and (ii) after going through the following class: 2
class Seminar
{
int Time;
public:
Seminar() //Function 1
{
Time=30;cout<<”Seminar starts now”<<end1;
}v
oid Lecture() //Function 2
{
cout<<”Lectures in the seminar on”<<end1;
}S
eminar(int Duration) //Function 3
{
Time=Duration;cout<<”Seminar starts now”<<end1;
}~
Seminar() //Function 4
{
cout<<”Vote of thanks”<<end1;
}
};
i) In Object Oriented Programming, what is Function 4 referred as and when does
it get invoked/called?
ii) In Object Oriented Programming, which concept is illustrated by Function 1 and
Function 3 together? Write an example illustrating the calls for these functions.
(c) Define a class TEST in C++ with following description: 4
Private Members

-3-a. TestCode of type integer
b. Description of type string
c. NoCandidate of type integer
d. CenterReqd (number of centers required) of type integer
e. A member function CALCNTR() to calculate and return the number of
centers as (NoCandidates/100+1)
Public Members
• A function SCHEDULE() to allow user to enter values for TestCode,
Description, NoCandidate & call function CALCNTR() to calculate the
number of Centres
• A function DISPTEST() to allow user to view the content of all the data
members
(d) Answer the questions (i) to (iv) based on the following: 4
class PUBLISHER
{
char Pub[12];
double Turnover;
protected:
void Register();
public:
PUBLISHER();
void Enter();
void Display();
};
class BRANCH
{
char CITY[20];
protected:
float Employees;
public:
BRANCH();
void Haveit();
void Giveit();
};
class AUTHORrivate BRANCH,public PUBLISHER
{
int Acode;
char Aname[20];
float Amount;
public:
AUTHOR();
void Start();
void Show();
};
(i) Write the names of data members, which are accessible from objects
belonging to class AUTHOR.
(ii) Write the names of all the member functions which are accessible from objects
belonging to class BRANCH.
(iii) Write the names of all the members which are accessible from member
functions of class AUTHOR.
(iv) How many bytes will be required by an object belonging to class AUTHOR?
-4-

3.(a) Write a function in C++ to merge the contents of two sorted arrays A & B into third
array C. Assuming array A is sorted in ascending order, B is sorted in descending
order, the resultant array is required to be in ascending order.

4b) An array S[40][30] is stored in the memory along the row with each of the element
occupying 2 bytes, find out the memory location for the element S[20][10], if an
element S[15][5] is stored at the memory location 5500. 4
(c) Write a function in C++ to perform Insert operation in a dynamically allocated
Queue containing names of students. 4
(d) Write a function in C++ to find the sum of both left and right diagonal elements
from a two dimensional array (matrix). 2
(e) Evaluate the following postfix notation of expression: 2
20,30,+,50,40,-,*

4.(a) Observe the program segment given below carefully and fill the blanks marked as
Statement 1 and Statement 2 using seekp() and seekg() functions for performing
the required task. 1
#include <fstream.h>
class Item
{
int Ino;char Item[20];
public:
//Function to search and display the content from a particular
//record number
void Search(int );
//Function to modify the content of a particular record number
void Modify(int);
};
void Item::Search(int RecNo)
{
fstream File;
File.open(“STOCK.DAT”,ios::binary|ios::in);
______________________ //Statement 1
File.read((char*)this,sizeof(Item));
cout<<Ino<<”==>”<<Item<<endl;
File.close();
}v
oid Item::Modify(int RecNo)
{
fstream File;
File.open(“STOCK.DAT”,ios::binary|ios::in|ios: ut);
cout>>Ino;cin.getline(Item,20);
______________________ //Statement 2
File.write((char*)this,sizeof(Item));
File.close();
}
(b) Write a function in C++ to count the number of lines present in a text file
“STORY.TXT”. 2
-5-
(c) Write a function in C++ to search for a BookNo from a binary file “BOOK.DAT”,
assuming the binary file is containing the objects of the following class. 3
class BOOK
{
int Bno;
char Title[20];
public:
int RBno(){return Bno;}
void Enter(){cin>>Bno;gets(Title);}
void Display(){cout<<Bno<<Title<<endl;}

5. a) What is the significance of ARPANET in the network? 1
b) Expand the following terminologies: 1
(i) CDMA (ii) GSM
c) Give two major reasons to have network security. 1
d) What is the purpose of using a Web Browser? Name any one commonly
used Web Browser. 1
e) Knowledge Supplement Organisation has set up its new center at
Mangalore for its office and web based activities.

Last edited by Neelurk; March 21st, 2020 at 09:59 AM.
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