Unit 2
Operating Systems

1. The term operating system refers to:
a set of programs which controls how a computer works
the way a computer operator works
the way a magnetic disk operates
a high level language being converted to machine code

2. A signal from a device or source seeking the attention of the processor:

3. More than one program in memory appearing to operate simultaneously:
virtual memory

4. Processing carried out from beginning to end without user interaction:
real-time OS
interactive OS
on-line processing
batch processing

5. Making copies of data or programs in case the originals are corrupted or lost:
virus protection
file encryption

6. The operating system functions in such a way as to hide from the user all the complexities of the hardware. This is known as:
virtual memory
virtual machine

7. The operating system schedules jobs in order to make the best possible use of computer resources. This is known as:
resource allocation
memory management
backing store management
interrupt handling

8. Which of the following is not a type of applications software:
operating system
word processor
graphics package

9. The use of virtual memory:
results in faster execution speeds
creates the illusion that the computer has more memory than it actually has
ensures that disk space is used efficiently
ensures that all programs are relocatable

10. Which of the following is not a method of biometric security?
password protection
fingerprint recognition
voice recognition
face recognition

Score =

Correct answers: