IT Fundamentals

Question 1

Numbering Systems:

Answer 1

(Humans) Decimal: 0-9 – Base: 10
(Computer) Binary: 0 or 1 – Base: 2
(Addressing) Hexadecimal 0-9, A-F – Base: 16

Question 2

Storage Unit sizes:

Answer 2

Bit – 1 or 0
Byte – 8 bits in every Bite
KB (Kilobyte) – 1,000 Bytes
MB (Megabyte) – 1,000 Kilobyte (one million B)
GB (Gigabyte) – 1,000 Megabyte (one billion B)
TB (Terabyte) – 1,000 Gigabyte (one trillion B)

Question 3

Throughput units (how fast data travels):

Answer 3

bps – Bits per second
Kbps – Kilobits per second
Mbps – Megabits per second
Gbps – Gigabits per second
Tbps – Terabits per second

Question 4

Processing Speed

Answer 4

Hertz – Frequency of electrical cycles per second

MHz – Mega Hertz
GHz – Giga Hertz (most common)