J277 1.1 Systems Architecture Lesson 2

What is a property of an address bus?

• Carries data and instructions

• Uni-directional

• Bi-directional

• Carries control signals

This carries address of the next instruction that will be fetched

• Address bus

• Data bus

• Control bus

• System bus

What is transferred down the data bus?

• Data only

• Addresses only

• Data and instructions

• Data, instructions and addresses

What accurately describes a peripheral?

• A component of a computer system

• A device that is not directly connected to the CPU

• A device that is directly connected to the CPU

• A device that is plugged in

This is not a type of secondary storage

• Blu-Ray Drive/Disc

• Flash Memory

• Hard Disk Drive

• RAM

Data and instructions in use are stored in the:

• Processor

• Embedded system

• Hard Disk Drive

• Main memory

Processors have a speed measured in

• Hertz

• Bits

• Bytes

• Seconds

What doesn’t affect the performance of the computer?

• Clock speed

• Number of cores

• Cache size

• The number of instructions in the program

If the number of cores goes up from 2 to 4, what is the exact effect on performance?

• Performance decreases

• The maximum number of instructions executed per second doubles

• The maximum number of instructions executed per second quadruples

• The maximum number of instructions executed per second is halved

If the processing speed goes up from 1GHZ to 4GHZ, what is the exact effect on the performance of the computer?

• The maximum number of instructions executed per second doubles

• The maximum number of instructions executed per second quadruples

• The maximum number of instructions executed per second is halved

• The maximum number of instructions executed per second is quartered