Numbering Systems In Computing (Month 5)

Question 1

Numbering systems

Answer 1

Data moved through different layers to end up as packets of bits and bytes.
4 numbering systems:
Binary - Base-2
Octal - Base-8
Decimal - Base-10
Hexadecimal - Base-16

Question 2

Binary

Answer 2

Moves up in 2’s.
Each binary number (bit) weighted to represent a higher value based on its position.
The maximum is 1.

Question 3

Bytes with prefix

Answer 3

Kilobyte 1(3x0)
Megabyte 1(6x0)
Gigabyte 1(9x0)
Terabyte 1(12x0)
Petabyte 1(15x0)
Exabyte 1(18x0)
Zettabyte 1(21x0)
Yottabyte 1(24x0)

Question 4

Moving up in Storage

Answer 4

1MB -> 1024KB
1GB -> 1024MB
1TB -> 1024GB

Question 5

Viewing storage

Answer 5

Storage shows different on windows because manufacturers show as a decimal value where windows uses binary

E.G. 500GB -> 465.66GB

Question 6

Octal

Answer 6

8 Symbols (0-7)
After the number 9, goes up in letters.
15 is max but known as F

Question 7

Hexadecimal

Answer 7

On a computer, counts to 9 then to F then onto 19 then 1F.

0 -> 0000
1 -> 0001
2 -> 0010
3 -> 0011
4 -> 0100
5 -> 0101
6 -> 0110
7 -> 0111
8 -> 1000
9 -> 1001
10 -> 1010
11 -> 1011
12 -> 1100
13 -> 1101
14 -> 1110
15 -> 1111

Question 8

Hexadecimal Pt2

Answer 8

Cannot add new columns so only goes to 9 then A.
Stays 1 digit

64 bit computer
ff -> hexadecimal
11111111 -> Binary
ff=255

Question 9

ARP (Address Resolution Protocol)

Answer 9

Discovers MAC Address & map to IP address