RK1

structured collection of records or data

An instruction given to a computer program is called

• A Command

• Data

• Information

• Number

A Binary Number is made up of what kind of digits

• from 0 to 7

• from 0 to 9

• only 0s and 1s

• from 0 to 9 and from A to F

What does Human–computer interaction

study in communication

• Computer and software

• A human and a machine

• A computer and Computer systems

• A computer and applications

In HCI on the machine side, techniques are not considered as

• computer graphics

• linguistics

• programming languages

• operating systems

The main problem of human-computer interaction is how to improve …

• the reliability of CPU

• the usability of computer interfaces

• the speed of CPU

• The accuracy of computer interfaces

A database is a structured collection of what

• rows and columns

• records or data

• reports and data

• properties

Which one is a kind of software to organize the storage of data

• Software

• Hardware

• Firmware

• A computer database

In which model data is organized into an inverted tree-like structure.

• In a hierarchical model

• In a relational model

• In a network model

• In an object-oriented model

Operating Systems are divided into

• Single-user OS

• Multi-user OS

• Mini-user OS

• Macro-user OS