Welcome to Operating System Quiz, Entry Level !!

Question 1. Which directory implementation is used in most Operating System

Single level directory structure

Two level directory structure

Tree directory structure

Acyclic directory structure

Question 2. Multiprogramming systems

Are easier to develop than single programming systems

Execute each job faster

Execute more jobs in the same time

Are used only on large main frame computers

Question 3. PCB =

Program Control Block

Process Control Block

Process Communication Block

None of the above

Question 4. The state of a process after it encounters an I/O instruction is

Ready

Blocked/Waiting

Idle

Running

Question 5. The problem of thrashing is effected scientifically by

Program structure

Program size

Primary storage size

None of the above

Question 6. The number of processes completed per unit time is known as

Output

Throughput

Efficiency

Capacity

Question 7. 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 8. Which technique was introduced because a single job could not keep both the CPU and the I/O devices busy

Time-sharing

SPOOLing

Preemptive scheduling

Multiprogramming

Question 9. 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 10. Which symbol will be used with grep command to match the pattern pat at the beginning of a line

^pat

$pat

pat$

pat^