QUESTION $10$

In message passing

A$.$ direct addressing means the send primitive holds the destination address.

B$.$ indirect addressing means msgs go to a temporary shared data structure.

C$.$ every message has its own mailbox.

D$.$ a blocking send & blocking receive scenario is called a rendevous.

check

Hint: a mailbox is the data structure used in indirect addressing

QUESTION $11$

Mutual exclusion

A$.$ means critical code can only be executed by one process at a time.

B$.$ is only an issue for related processes $($i$.$e$.,$ parent and child$).$

C$.$ is a requirement for the readers$/$writers problem.

D$.$ is a necessary componenet of the producer$/$consumer problem.

check

QUESTION $12$

A monitor supports synchronization by the use of

A$.$ condition variables accessible only within the monitor.

B$.$ message queues.

C$.$ semaphores.

check

Hint: a monitor does not use IPC shared services.

QUESTION $13$

In the Strong Readers$/$Writers problem

A$.$ multiple readers may read while one writer is writing.

B$.$ multiple writers may write simultaneously.

C$.$ waiting writers take precedence over waiting readers.

D$.$ waiting readers take precedence over waiting writers.

check

less likely to have starvation if you do so $-$ although it does not prevent the writers from starving.

QUESTION $14$

If two concurrent processes are unaware of each other

A$.$ it is possible to deadlock on a renewable resource.

B$.$ mutual exclusion is still needed on shared resources.

C$.$ it is possible that one process may suffer starvation.

D$.$ data coherence is a potential problem.

check the device.