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Computer Memory and Addressing Quiz

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Questions and Answers

What does a thread calling notify() in Java synchronisation do?

T is moved from the wait set to the entry set (correct)

Start a new thread T

An arbitrary thread T is selected from the wait set

Set the state of T from blocked to runnable

What is a Mutex in the context of synchronization?

Type of kernel

CPU scheduler algorithm

Mutual exclusion lock (correct)

What is the purpose of a Semaphore in the OS context?

Critical section code for one thread access only

Traffic light system

An integer variable used for process synchronization (correct)

When is preemptive scheduling used in managing processes?

Switches from running state to ready state or from waiting state to ready state Signup and view all the answers

What is true about Round Robin (RR) scheduling?

Each process gets the same amount of CPU time Signup and view all the answers

How are signals used in UNIX/Linux systems?

To notify a process of a particular event occurrence Signup and view all the answers

What is the function of Memory Management Unit (MMU)?

Hardware device that at run time maps virtual to physical address Signup and view all the answers

What does the concept of Virtual Memory involve?

Separation of user logical memory from physical memory Signup and view all the answers

What is the purpose of Copy-on-Write (COW)?

Both parent and child processes to initially share the same pages in memory Signup and view all the answers

What does Mutual Exclusion imply in the context of resource usage?

Only one process at a time can use a resource Signup and view all the answers

What does it mean if a system is in a safe state?

No deadlocks will occur Signup and view all the answers

In the readers-writers problem, what are the specific roles of readers and writers?

Readers can only read the dataset and writers can only write. Signup and view all the answers