Objective Question 4

1 Which is not an Operating System?

A. Windows 95

B.  MS-Dos

C. Windows 3.1

D. windows

Answer : C 

 

2. The operating system manages________.

A. Memory

B. Processor

C. Disk and l/O devices

D. All of the above

Answer: D

3. Who is called a supervisor of computer acitvity?

A. CPU

B. Operating system

C. Control unit

D. Application program

Answer: B

4. What is the name of the software which can be legally compiled and often used for free?

A. Shareware program

B. Public domain program

C. Firmware program

D. Mind Ware

Answer: B

5. The principle of locality of reference justifies the use of ________.

A. Virtual Memory

B.  Interrupts  

C. Main Memory 

D. Cache Memory

Answer :D

6. The section of code which acesses shared variables is called as ______.
A. Critical Section
B. Block
C. Procedure
D. Semaphore
Answer : A

7. In memory management a technique called as paging physical memory is broken into fixed sized blocks called ______. 
A. Pages
B. Frames
C. Blocks
D. Segments
Answer : B

8.  The State of a process after it encounters an I/O instruction is _____. 
A. Ready
B. Blocked / Waiting
C. Idle
D. Running
Answer : B

9.  Which of the following file name extension suggests that the file is Backup copy of another file ? 
A. TXT
B. COM
C. BAS
D. BAK
Answer : D

10.  The operating system of a computer serves as software interface between the user and _______.
A. Hardware
B. Peripheral
C. Memory
D. Screen
Answer : A