Computer Science Quiz

When a computer program is executing there are some instructions which need to be quickly retrieved. In which location are the instructions MOST likely to be placed?

• Hard drive

• Floppy disk

• Cache memory

• Random access memory

What is the LARGEST integer that can be represented in a 4-bit signed magnitude?

• +3

• +7

• +18

• +15

The CPU deals with each instruction in a cycle. The sequence of steps to carry out one machine instruction is called the instruction or machine cycle. The first action is to fetch the instruction and then the program counter is updated. The other three phases of the machine cycle in the correct order are

• decode the instruction; execute the instruction; transfer the data

• decode the instruction; transfer the data; execute the instruction

• execute the instruction; decode the instruction; transfer the data

• transfer the data; execute the instruction; decode the instruction

What is the 4-bit two's complement of -8?

• IO O 0

• I O I 0

• 0 I 1 1

• I O I I

Which of the following features is NOT an advantage of storage devices over memory?

• Less volatility

• Greater probability

• Greater response time

• Larger storage capacity

What type of computer system is usually used for weather forecasting?

• Mainframe computer

• Super computer

• Micro computer

• Work station

'Flash memory' is a type of

• EEPROM

• EPROM

• RAM

• ROM

The 8-bit sign and magnitude representation of a certain number is 100IO101. What is the decimal number represented?

• -12

• -21

• 148

• 149

What is the name of the combinational circuit which converts binary information from n coded inputs to a maximum of 2n unique outputs?

• Encoder

• Decoder

• Logic gate

• Multiplexer

The range of instructions that a computer can execute is known as the

• executable instructions

• instruction size

• instruction set

• word size