logo

CuriousTab

CuriousTab

Discussion

Home ‣ Technical Questions ‣ Operating Systems See What Others Are Saying!
  • Question

  • What is process synchronization?


  • Correct 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 

    • More questions

    • 1. SNOBOL is mainly used for

    • Options
    • A. Text Operation
    • B. String operations
    • C. List operations
    • D. Numerical operations
      • Discuss
    • 2. Convert the expression ((A + B) * C ? (D ? E) ^ (F + G)) to equivalent Prefix Notation
    • Discuss
    • 3. What would be the output of the following program? main() { char a[] = "Visual C++"; char *b = "Visual C++"; printf ("\n%d %d", sizeof (a), sizeof (b)); printf ("\n%d %d", sizeof (*a), sizeof (*b)); }
    • Discuss
    • 4. Point out the error, if any, in the following program. #include "stdarg.h" main() { display ( 4, 12.5, 13.5, 14.5, 44.3); } display(int num, ...) { float c; int j; va_list ptr; va_start (ptr, num); for ( j = 1; j <= num; j++) { c = va_arg ( ptr, float ); printf ("\n%f", c); } }
    • Discuss
    • 5. Two main measures for the efficiency of an algorithm are

    • Options
    • A. Time and Space
    • B. Complexity and Memory
    • C. Data and Space
    • D. Memory and Processor
      • Discuss
    • 6. Would the following program compile? main() { int a = 10, *j; void *k; J = k = &a; J++; k++; printf ("\n%u %u", j, k); }
    • Discuss
    • 7. What would be the output of the following program? main() { char ch ='A'; printf ("%d%d", sizeof (ch), sizeof ('A')); }
    • Discuss
    • 8. What is the type of the algorithm used in solving the 8 Queens problem ?

    • Options
    • A. Dynamic Programming
    • B. BackTracking
    • C. Branch and Bound
    • D. None
      • Discuss
    • 9. The SQL statements that take care of security and authorization are

    • Options
    • A. DDL
    • B. DML
    • C. DCL
    • D. None
      • Discuss
    • 10. ON UPDATE CASCADE ensures which of the following?

    • Options
    • A. Normalization
    • B. Data Integrity
    • C. Materialized Views
    • D. All of the above.
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.