Mocks

Question 1

What’s an embedded system

Answer 1

A computer built into another device eg a control panel in a washing machine

Question 2

Parts of cpu

Answer 2

Control unit executed program instructions by following fetch decode execute cycle

Arithmetic logic unit- does calculations

Cache-fast memory stores regularly used date

Question 3

what is Ram

Answer 3

High speed volatile memory where main files are stored that are being used

Question 4

Secondary storage

Answer 4

Where ram runs out of memory it is stored in the virtual memory known as secondary storage

Question 5

What is Ron

Answer 5

Read only

Tell the computer to boot up and is non volatile

Question 6

CPU performance depends on

Answer 6

Clock speed- number of instructions per minute

Number of cores- amount of instructions that can be carried out at once

Cache size- faster access to move data

Question 7

What does gpu do

Answer 7

Helps the cpu handle graphic image processing

Question 8

Types of Secondary storage

Answer 8

Non volatile ( where applications operating systems are stored)
Magnetic- high capacity reliable
Solid state- fast and reliable
Optical disc- cheap and robust

Question 9

What’s the os

Answer 9

Operating system that manages hardware and run software and provides a user interface

Question 10

Compression and encryption software

Answer 10

Compression- makes the files smaller so takes up less storage

Encryption-scrambles to stop 3rd parties accessing