y10 mock exam revision

Question 1

what does memory and the cpu do ?

Answer 1

memory-stores programs

cpu- carries out instructions

Question 2

fetch execute cycle ?

Answer 2

fetch the next instruction from RAM

decode and see what needs doing

execute–> carry out the instruction e.g performing a calculation

Question 3

what is a protocal

Answer 3

a set of rules for how computers should communicate on a network

Question 4

why is solid state storage is the most appropriate type of storage for the digital
video camera.

Answer 4

Portable
 Lightweight
 ….e.g. device needs to be carried
 Small physical size
 …e.g. can fit in a small camera
 Durable
 No moving parts

Question 5

difference between full and incremental backup

Answer 5

Full Backup is a complete backup of all files on the designated hard drive.

An Incremental Backup is a backup of all changed files since the last backup.

a full most be done b4 an incremental can be done

Question 6

name a utility program and how its used

Answer 6

encryption software, so it cant be read or understood

Question 7

two additional items of network hardware, apart from cables and a router, that
may be used within the house network.

Answer 7

switch, server

Question 8

Name the system which matches URLs to IP addresses on the web.

Answer 8

DNS Domain name server

Question 9

what is the purpose of the cache

Answer 9

provides fast access to frequently used instructions and data