Placement Papers - HP

HP Paper Pattern
 

There Were 3 Sections:

 PART- 1    ( 40 Q s (Fundamental Computer Concepts, Includes OS, N/w , Protocols )
PART-2     ( 20 Q s (Purely C ) -- Bit tricky (Involves ADA Concepts )
PART-3     ( 20 Q s (Analytical) -- Very Easy )
 
 I don' t remember all the Qs. however some of them which i do have been written below.

 They are not in order or part of .
 
Q : What is not a part of OS ?
 Op. : swapper, compiler, device driver, file system.
 A : compiler.
 
Q : what is the condition called when the CPU is busy swapping in and out pages of  memory without doing any useful work ?
Op. Dining philosopher s problem, thrashing, race around, option d
 A: thrashing.
 
Q : How are the pages got into main memory from secondary memory?
 DMA, Interrupts,option3, option 4
 A : as far as i know its Interrupts --by raising a page fault exception.
 
Q : What is the use of Indexing ?
Op. fast linear access, fast random access, sorting of records , option 4
 A : find out....
 
Q : in terms of both space and time which sorting is effecient.(The question is  rephrased .)
Op. merge sort, bubble sort, quick sort, option 4
 A : find out
 
Which case statement will be executed in the following code ?
 
main()
{
int i =1;
switch(i)
{
i++;
case 1 : printf ("");
break;

case 2 : printf("");
break;
default : printf("");
break;
}
}
 Answer : Case1 will only be executed.
 
 Q : In the given structure how do you initialize the day feild?
 struct time {

char * day ;
int * mon ;
int * year ;
} * times;

  Options : *(times).day, *(times-.day), *times-.*day.
 Answer : *(times-.day) -- after the execution of this statement compiler generates  error.i didn t understand why.can anybody explain.
 
 Q: The char has 1 byte boundary , short has 2 byte boundary, int has 4 byte boundary. What is the total no. of bytes consumed by the following structure:
 struct st {
char a ;
char b;
short c ;
int z[2] ;
char d ;
short f;
int q ;
}
 Options are given.
 Answer : its very easy 20 and not 19 .