Technical Questions

Q:

Where's MBR located on the disk?

Answer

Main Boot Record is located is sector 0, track 0, head 0, cylinder 0 of the primary active partition.

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Subject: Hardware

0 1990
Q:

What is process synchronization?

Answer

A situation, where several processes access and manipulate the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place, is called race condition. To guard against the race condition we need to ensure that only one process at a time can be manipulating the same data. The technique we use for this is called process synchronization.

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1 1984
Q:

Why we use do-while loop in c?

Answer

It is also called as post tested loop. It is used when it is necessary to execute the loop at least one time. Syntax:

do {
Loop body
} while (Expression);

Example:

int main(){
    int num,i=0;  
    do{
         printf("To enter press 1\n");
         printf("To exit press  2");
         scanf("%d",&num);
         ++i;
         switch(num){
             case 1:printf("You are welcome\n");break;
             default : exit(0);
         }
    }
    while(i<=10);
    return 0;
}

Output: 3 3 4 4

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Subject: Programming

0 1983
Q:

Which error are you likely to get when you run the following program?

main()

{

  struct emp

  {

      char name[20];

      float sal;

  };

  struct emp e[10];

  int i;

  for ( i = 0 ; i <= 9; i++)

        scanf ( "%s %f" , e[i].name, &e[i].sal );

}

Answer

Floating point formats not linked

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Subject: Programming

0 1976
Q:

What is a ready queue?

Answer

The processes that are residing in the main memory and are ready and waiting to execute are kept on a list called the ready queue.

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0 1972
Q:

Define HCMOS?

Answer

High-density n-type Complimentary Metal Oxide Silicon field effect transistor.

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Subject: Hardware

0 1971
Q:

What are system calls?

Answer

System calls provide the interface between a process and the operating system. System calls for modern Microsoft windows platforms are part of the win32 API, which is available for all the compilers written for Microsoft windows.

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1 1970
Q:

What's the difference between L1 and L2 cache?

Answer

Level 1 cache is internal to the chip, Level 2 is external.

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Subject: Hardware

0 1969