Computer Science Quiz

Convert hexadecimal number 255 into decimal system

• 333

• 531

• 343

• 211

• +597

Decimal number 2 in binary system is written as

• 11

• 01

• +10

• 1001

• 1111

The sum of binary numbers 111011101010 is equal to

• 1100111

• 0111100

• 0101100

• 0011011

• +1100101

The multiplication of binary numbers 110 and 111

• 101100

• 111100

• 101110

• 111000

• +101010

Why is mathematical coprocessor necessary

• printing information

• for recording data on cd

• reading of the information

• +to help to basic processor in performance of mathematical operations

• permanent storage of the information which is used at work in a computer

The modem and the fax-modem are used for

• conversation with users

• effective work with office equipment

• +connections to satellite communication

• information output on paper or on computer

• exchanging information with other computers

Order of switching off of the computer

• printer, system unit

• system unit, monitor

• system unit, monitor, printer

• monitor, printer, system unit

• +system unit, printer, monitor

The lowest level software is

• +BIOS

• system

• service

• applied

• operating

Data are

• text

• table

• properties of objects

• +the registered signals

• the data transferred between people

The binary number system concerns to

• numerical systems

• +positional systems

• arithmetic notations

• depositional systems

• no numerical systems