Hellosoft Placement Paper

1. What is diners phylosophers algorithm.
2. What is atomicity.Explain
3. Give an example of source- level debugger in unix/linx.
4. What is Pre-emptive multitasking.
5. Do not remember this one.

DataStructures: (ONly 5 Questions)

1. Where will the parameters be stored when a function is called in a program.
2. What is recursion?What are its disadvantages.
3. Which one is the best and efficient sort?

Networking:(Only 5 Questions)

1. ASN.1 belongs to which layer.
2. Give an example of popular Transport Layer Protocol
3. What is the netmask of Class B IP address?
4.  Explain CSMA/CD.
5. Given a size from 0-7 what would be the least window size.

C Language (Total 13 Questions)

1. main() 
   {
     printf("%d",printf("HelloSoft"));
   } Output?
2. case 1: case 2:
         typedef Struct { typedef Struct {
                    int a; char p;
                    char b; int q;
                    int d; char k;
                    char e; int l;
                     }A; }A;
        Assuming 'packing' is not enabled, which case will give an error of Sizeof(A) less.
3.  main()
     {
      int i=3;
      printf("%d %d %d",i++,i,++i);
       }
4. main() 
       { 
         int i=10;
         int j,k=5;
         int a[10];
         for(j=0;j<10;j++)
         a[j]=(i+k)+(i*k);
       }
    Optimize the above code.
5. Write In Order Tree Traversal Pseudo-code.
6.  main()
       {
      int *p=0x100;
      int *q=0x100;
      int k=p*q;
      printf("%x\n",k);
      } Output ?
7. Char* foo(Str...) {
        char str[4];
        strcpy(str,"HelloSoft");
        return str;
         } Output?
8. int a[10][20][30][40];
          int *p
           How to access an element of a using p?
9. main()
      {
         int i=10;
         if(i>20)
         if(i==10)
            print("Hi");
          else
             printf("Bye");
        } Output ?
10. main()
       {
        float f;
        int i;
        //something like this   not remember these 4 questionsexactly
        f=(float *)malloc(sizeof((float *)*4));
       }
             Some Question was asked  not remenber .