5) RESTRICT Operator is also known as
A) PROJECT Operator
B) SELECT Operator
C) DIFFERENCE Operator
D) INTERSECTION Operator
________ is the physical aspect of the computer that can be seen.
Hardware
Software
Operating system
Application program
__________ is the brain of a computer
CPU
Memory
Disk
Why do computers use zeros and ones?
because combinations of zeros and ones can represent any numbers and characters.
because digital devices have two stable states and it is natural to use one state for 0 and the other for 1.
because binary numbers are simplest
because binary numbers are the bases upon which all other number systems are built.
One byte has ________ bits.
4
8
16
12
____________ is a device to connect a computer to a local area network (LAN).
regular modem
DSL
Cable modem
NIC
__________ represents an entity in the real world that can be distinctly identified.
A class
An object
A method
A data field
_______ is a construct that defines objects of the same type.
An object is an instance of a __________.
program
class
method
data