Welcome to Operating System Quiz, Entry Level !!

Question 1. In UNIX, Which command is used to display the top of the file

cat

head

more

grep

Question 2. Which of the following will determine your choice of systems software for your computer

Is the applications software you want to use compatible with it

Is it expensive

Is it compatible with your hardware

Both 1 and 3

Question 3. 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.

310

324

315

321

Question 4. 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 5. FIFO scheduling is

Preemptive Scheduling

Non Preemptive Scheduling

Deadline Scheduling

Fair share scheduling

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

Output

Throughput

Efficiency

Capacity

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

^pat

$pat

pat$

pat^

Question 10. Which is not the state of the process

Blocked

Running

Ready

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