topic 1 - binary system & hexadeximal

Question 1

uses of binary system (3)

Answer 1

• ASCII value
• unicode value
• instruction

Question 2

memory measurements from smallest to largest (5)

Answer 2

• 1KB
• 1MB
• 1GB
• 1TB
• 1PB

Question 3

advantages of using hexadecimal (5)

Answer 3

• easier to understand
• easier to debug
• shorter so takes up less space
• faster to enter than binary
• conversion to binary is easier than from denary

Question 4

uses of hexadecimal numbers (3)

Answer 4

• MAC address
• HTML colours
• error messages

Question 5

problems with shifting bits (3)

Answer 5

• may run out of places at the end of the register
• end bit may be lost
• may result in loss of precision

Question 6

what does HTML stand for

Answer 6

hyper text markup language

Question 7

structure of HTML

Answer 7

• structure used for layout
• in HTML doc, presentation and structure often kept separate
• HTML tag used for structure

Question 8

URL (composed of 3 parts)

Answer 8

• protocol
• filename
• webserver name

Question 9

presentation of HTML

Answer 9

• presentation used for colour/style
• in HTML doc, presentation and structure often kept separate
• CSS linked to the HTML used for presentation

Question 10

what does MAC address stand for

Answer 10

Media access code

Question 11

explain what is meant by a MAC address (6)

Answer 11

• hardware address
• unique num associated w device
• LAA
• UAA
• first 6/8 digit = manufacturer code
• last 6/8 digit = serial num of device