Designate if each statement is True (a) or False (b) (with justification)

Two processes reading from the same physical address will access the same contents.

Stacks are used for procedure call frames, which include local variables and parameters.

A SJF scheduler may preempt a previously running longer job

The OS provides the illusion to each thread that it has its own address space.

When a thread returns from a call to cond_wait() it can safely assume that the situation it was waiting for is now true.

The call cond_signal() releases the corresponding mutex.

The safety property for dining philosophers states that it is not the case that there exists a philosopher who is hungry and his/her neighbors are not eating

With a reader/writer lock, either multiple readers can hold the lock or a single writer can hold the lock (or no one holds the lock).

A thread can hold only one lock at a time.

Deadlock can be avoided by using semaphores instead of locks for mutual exclusion.