A copy of this data structure is owned by each process during execution and cont

Question

A copy of this data structure is owned by each process during execution and contains important state and context data. 1. Process Register Table 2. Job Data Area 3. Process Control Block 4. Process Backup Area The _______ semaphore operator "raises" the semaphore and will allow a waiting process to proceed. 1. P () 2. signal () 3 wait () 4. V () The Many to One model of thread support _______. 1. Maps many kernel level threads to one user level thread 2. Maps many user level threads to many kernel level threads 3. Maps many kernel level threads to one user level thread 4. Maps many user level threads to one kernel level thread A Context Switch (i.e. scheduling a new process to run) is performed 1. In the middle of a Time Slice 2. With no change in general registers 3. To change process' state at the end of a time slice 4 Overhead free

Explanation / Answer

Question 19

Answer 19 Option 3. Process control Block.

This is used for storing the collection of information about the process. some of the information which is stored :

1) Name of the process

2) State of the process

3) schedule information.

4) process ID

Question 20

Answer 20: Option D V()

Because V() funtion that increments opertaion by 1. when Semaphore is getting more than zero than it will goes for execute from waitnig state.

Question 21

Answer 21: Option D

Maps many user level threads to one Kernel-level thread.

Because there is any number of thread can be execute concurrently. In Many to One all threads activity is restricted to user space.

Question 22

Answer 22 Option 3

To change process state at the end of a time slice.

Because it saves the state of the old process and loading new process state.

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