theory

Question 1

sequence

Answer 1

code runs in the same order every time

Question 2

selection

Answer 2

only runs a line of code if a condition is true

Question 3

iteration

Answer 3

a loop, the code repeats

Question 4

variable

Answer 4

a named location on the memory which stores information that can change during the running of the program

Question 5

float

Answer 5

a decimal number e.g. price=float(2.4)

Question 6

integer

Answer 6

a whole number e.g. age=int(6)

Question 7

string

Answer 7

a set of alphanumeric characters e.g. name=str(jack)

Question 8

boolean

Answer 8

true or false e.g. canMoveRight=true

Question 9

algorithm

Answer 9

a set of instructions which when followed solve a problem

Question 10

decomposition

Answer 10

breaking a problem down into smaller problems to make it easier to solve

Question 11

abstraction

Answer 11

taking away unnecessary information to allow you to focus on the main elements of the problem

Question 12

network

Answer 12

an interconnected collection of computers

Question 13

advantages of networking

Answer 13

it enables sharing of data, files, sharing of peripherals e.g. printers. It also provides control and security as backups and updates can be rolled out centrally

Question 14

network protocol

Answer 14

a set of rules that determine how data is transmitted between different devices in the same network

Question 15

data packet

Answer 15

a part of a file

Question 16

standard protocols

Answer 16

-http : hypertext transfer protocol, used for transferring data over the internet
-https : hypertext transfer protocol secure, to transfer encrypted data over the internet, especially those that require login credentials
-pop : post office protocol, used when receiving emails
-imap : internet message access protocol, used when receiving emails
-smtp : simple mail transfer protocol, used when sending emails

Question 17

syntax error

Answer 17

doesn’t meet the rules / grammar of the language and will not run

Question 18

logic error

Answer 18

program runs but generates an unexpected output

Question 19

input devices and example

Answer 19

allows data to be transferred from the user into the computer e.g.
-mouse
-keyboard
-scanner

Question 20

output devices and examples

Answer 20

shows result of processed data to the user e.g.
-moniter
-printer
-speaker

Question 21

storage devices and examples

Answer 21

allows you to save information when the computer is turned of e.g
-RAM (random access memory)
-HDD (hard disc drive)
-SSD (solid state drive)