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. Which of the following file name extension suggests that the file is Backup copy of another file

TXT

COM

BAS

BAK

Question 3. 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 4. Which directory implementation is used in most Operating System

Single level directory structure

Two level directory structure

Tree directory structure

Acyclic directory structure

Question 5. 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

Question 6. A binary semaphore

has the values one or zero

is essential to binary computers

is used only for synchronisation

is used only for mutual exclusion

Question 7. The Banker's algorithm is used

to prevent deadlock in operating systems

to detect deadlock in operating systems

to rectify a deadlocked state

none of the above

Question 8. 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 9. In UNIX, Which command is used to display the top of the file

cat

head

more

grep

Question 10. 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