Siemens Placement Paper -: Data Structures Questions With Answers

Siemens Previous Years Solved Sample Placement Papers

1.             void main(void) {
                   int y = 128;
                   const int x = y;
                   printf("%d", x);
               }
               

   1. 128
   2. Garbage
   3. 0
   4. Error
2. When do preprocessor directives get executed:
   1. before compilation
   2. during compilation
   3. after compilation
   4. none
3. Which kind of function can access private data members:
   1. friend functions
   2. private member functions
   3. public member function
   4. all
4. Which of the following will be automatically generated by the compiler:
   1. default constructor, default destructor, copy constructor, assignment operator
   2. Default constructor, copy constructor
   3. Address operator, assignment operator
   4. B & C
5. Difference between C++ struct and C++ class is:
   1. both are same
   2. Struct defaults to public member access while class defaults to private member access
   3. Struct defaults to public base class inheritance while class defaults to private base class inheritance
   4. B & C
6. Static member functions can access “this” pointer:
   1. true
   2. false
   3. compiler dependent
   4. none

7.             main() {
                   char arr[12];
                   printf("%d", sizeof(arr));
               }
               

   1. 24
   2. 12
   3. 36
   4. 2

8.             char *p;
               short i;
               long l;
               (long)i = l;
               

   1. both 1 & 2 are correct
   2. both 1 & 2 are incorrect
   3. Statement 1 is correct
   4. Statement 2 is correct

9.             main() {
                   int I;
                   I = 010;
                   printf("%d", I);
               }
               

   1. 2
   2. 8
   3. 10
   4. 4

10.             main() {
                    const int val = 5;
                    const int *ptrval;
                    ptrval = &val;
                    *ptrval = 10;
                    printf("%d", val);
                }
                

    1. 5
    2. 10
    3. Garbage
    4. Error

11.             void main(void) {
                    int x = 2;
                    int y = 4;
                    cout << x++ << --y;
                    cout << x << y;
                }
                

    1. 2 4
       3 4
    2. 3 3
       3 4
    3. 2 3
       2 4
    4. 2 3
       3 3

OS Questions for Technical Interviews

1. A page fault occurs when:
   1. system crashes due to lack of memory
   2. page referred belongs to a different program
   3. request for the page currently made is not in memory
   4. 1 & 2
2. The basic criteria of selecting a page replacement algorithm for virtual memory management is:
   1. low page fault rate
   2. high page fault rate
   3. high page modification rate
   4. low page size
3. Which of the following is not a scheduling algorithm:
   1. FCFS scheduling
   2. SJF scheduling
   3. Priority based scheduling
   4. Shortest fit scheduling
4. Which of the following statements is true on demand paging:
   1. used to increase speed of memory access
   2. causes external fragmentation
   3. technique to manage existing main memory efficiently
   4. allows variable sized segments
5. A multiprocessor system is:
   1. loosely coupled system
   2. tightly coupled system
   3. distributed system
   4. none
6. What is mutex:
   1. binary semaphore
   2. multitasking facility
   3. bit addressable memory
   4. register