Welcome to Operating System Quiz, Entry Level !!

Question 1. PCB =

Program Control Block

Process Control Block

Process Communication Block

None of the above

Question 2. A tree structured file directory system

allows easy storage and retrieval of file names

is a much debated unecessary feature

is not essential when we have millions of files

none of the above

Question 3. What is a shell

It is a hardware component

It is a command interpreter

It is a part in compiler

It is a tool in CPU scheduling

Question 4. If the Disk head is located initially at 32, find the number of disk moves required with FCFS if the disk queue of I/O blocks requests are 98,37,14,124,65,67.





Question 5. Round robin scheduling is essentially the preemptive version of


Shortest job first

Shortest remaining

Longest time first

Question 6. Virtual memory is

An extremely large main memory

An extremely large secondary memory

An illusion of extremely large main memory

A type of memory used in super computers

Question 7. The problem of thrashing is effected scientifically by

Program structure

Program size

Primary storage size

None of the above

Question 8. Which directory implementation is used in most Operating System

Single level directory structure

Two level directory structure

Tree directory structure

Acyclic directory structure

Question 9. The solution to Critical Section Problem is : Mutual Exclusion, Progress and Bounded Waiting

The statement is false

The statement is true

The statement is contradictory

None of the above

Question 10. Switching the CPU to another Process requires to save state of the old process and loading new process state is called as

Process Blocking

Context Switch

Time Sharing

None of the above