Q1: Give an example in which the operating system would use a bit map to manage resources?

Q2: What is difference between a stack and queue? Where would operating use each of these data structures?
Queue servers in FIFO manner were as the Stack servers in LIFO manner.
Queue is used as buffers where the store and forward is required.
It is used to maintain the job queues.
It is used to maintain the thread queues.
It also used to maintain the I/O request etc…

Stack is used to store the registers, flags and other details of process or thread during interrupts or system call.

Operating system uses these data structures to perform various tasks for example. Operating system uses stack while we use UNDO option it follows stack data …show more content…
How do the three models of threads relate these two types of threads?

The user level threads are high performance. The schedule is done by using thread running system. The thread function library is used to implement user level threads.
Kernel level threads will be implemented on multiple processor. The computer performance is lower when compared to user level threads. The synchronization and sharing resources is expansive.
The Hybrid threads are has the both the features of the user level and kernel level threads.
Kernel level threadsused for applications that are frequently block.

Q15: What is a thread library? Name two thread libraries?

Thread library provides concurrent programming, it provides the control to execution the multiple threads parallel in the shared memory. Thread library is done by time sharing on a single processor.
The thread library for unix is POSIX1003.1c and win32 for windows.

Q16: What is a race condition?

The race condition occurs when more than one threads access the shared memory elements and they try to change the data at the same time. The memory access without any priority scheme,lock or other control