Q. The state of a process after it encounters an I/O instruction is __________.

View solution

Q. The Banker's algorithm is used

View solution

Q. ______ is a high level abstraction over Semaphore.

View solution

Q. In one of the deadlock prevention methods, impose a total ordering of all resource types, and require that each process requests resources in an increasing order of enumeration. This voilates the _______________ condition of deadlock.

View solution

Q. Banker's algorithm for resource allocation deals with ?

View solution

Q. What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition ?

View solution

Q. What are global locks ?

View solution

Q. Semophores are used to solve the problem of

View solution

Q. Semaphores function is to

View solution

Q. Four necessary conditions for deadlock are non pre-emption, circular wait, hold and wait and

View solution

Q. Banker's algorithm deals with

View solution

Q. Which of following is not a condition of Dead Lock ?

View solution

Q. A solution to the Dining Philosophers Problem which avoids deadlock is 

View solution

Q. Let m[0]…m[4] be mutexes (binary semaphores) and P[0] …. P[4] be processes. 
Suppose each process P[i] executes the following: 
  wait (m[i]);wait (m[(i+1) mode 4]); 
  .........
  release (m[i]); release (m[(i+1)mod 4]); 
This could cause 

View solution

Q. What are the necessary conditions to occur the deadlock?

View solution

Q. Deadlocks can be described by which graph?

View solution

Q. Choose the correct option regarding deadlock.

View solution

Q. Which of the following is deadlock avoidance algorithm?

View solution

Q.  In a graph the number of vertices of odd degree is always

View solution

Q. Consider a computer system with 6 tape drives and 'n' processes completing for them. What is the maximum value of 'n' for the system to be deadlock free? (Assuming that each processes may need 3 tape drives)

View solution