Do U Know?

1. Which of the following involves context switch,
   (a) system call                                          (b) privileged instruction
   (c) floating point exception                          (d) all the above
   
   
2. In OST, terminal emulation is done in
   (a) sessions layer                                   (b) application layer
   (c) presentation layer                             (d) transport layer

3. For 1 MB memory, the number of address lines required,
   (a)11            (b)16            (c)22            (d) 24

4. Semaphore is used for
   (a) synchronization                    (b) dead-lock avoidence
   (c) box                                        (d) none

5. Piggy backing is a technique for
   a) Flow control                           b) Sequence
   c) Acknowledgement                d) retransmission

6. What is the sizeof(long int)
   (a) 4 bytes            (b) 2 bytes            (c) compiler dependent            (d) 8 bytes

7. Which of the function operator cannot be over loaded
   (a) <=            (b) ?:            (c) ==            (d) *

8. In a class composed of x girls and y boys what part of the class is composed of girls
   (a). y/(x + y)             (b). x/xy             (c). x/(x + y)             (d). y/xy

9. If 9x-3y=12 and 3x-5y=7 then 6x-2y = ?

(a).-5       (b). 4    (c). 2    (d). 8 

10.   What would be the output of the following program?
                            #include<stdio.h>
                            main()
                            {
                                extern int a;
                                printf("%d",a);;
                            }
                            int a=20;
    (a) 20                      (b) 0     (c) garbage value               (d) error!!

11.   What would be the output of the following program?
                            main()
                            {
                               inti=-3,j=2,k=0,m;
                                m=++i&&++j||++k;
                                printf("%d %d %d %d",i,j,k,m);
                            }
    (a) -2   3   0   1        (b) -3   2   0   1      (c) -2   3   1   1        (d) error

12.  What would be the output of the following program?

#include<stdio.h>

             main()

 {

                         int i=-3,j=2,k=0,m;

                        m=++i&++j|++k;

                        printf("%d %d %d %d",i,j,k,m);

 }

            Output:-2  3  1  3        

13.    What would be the output of the following program.

#include<stdio.h>

#define CUBE(x) (x*x*x)

 main()

{

  int a,b=3;

 a=CUBE(b++);

 printf("%d %d",a,b);

 }

a) 64    4    (b) 27    4              (c) 27    6        (d) 64    6

14.  What would be the output of the following program.

#include<stdio.h>

main()

{

            int num,*p;

            num=5;

            p=&num;

            printf("%d",*p++);

}

(a) 6             (b) 5                 (c) junk value              (d) compilation error

15.  What would be the output of the following program.

#include<stdio.h>

fn(int i)

{ return ++i;

}

main()

{

                         int i=10;

                        fn(i);

                        printf("%d",i);

}

(a) 10             (b) 11                (c)12         (d) Compilation error

16.  What would be the output of the following program?

main()
{
       int i,j;
       i=10;
       j=sizeof(++i);
       printf("%d",i);
 }

(a) 11          (b) 10                 (c)4                (d) compilation error

17.  What would be the output of the following program?

#include<stdio.h>

main()

{

                        int i=7;

                        printf("%d",i++*i++);

}

(a) 49                 (b) 56               (c)72             (d) compilation error

18. What is the output of the program given below?

#include<stdio.h>

main()

{

            char i=0;

            for(;i>=0;i++);

            printf("%d ",i);

}

            Output: -128 (The output vary from compiler to compiler)

19.  What is the output of the program given below?

#include <stdio.h>

main()

{

  float f1 = 0.1;

  if (f1 == 0.1f)

  printf("equal\n");

  else

  printf("not equal\n");

}

            Output: equal

20.  What is the output of the program given below?

#include <stdio.h>

 main()

 {

            float x = 'a';

            printf("%f", x);

            return 0;

 }

            Output: 97.000000