Network speeds (Edexcel GCSE Computer Science): Flashcards

Data transfer rate

Megabits per second (Mbps)

Base-10 (multiply by 1000)

Base-2 (multiply by 1024)

Lowercase b = bits, capital B = bytes

8 bits

Time = File size (bits) $\div$ Data transfer rate (bps)

File size in bits, speed in bps

$1,000,000$ bps

$1,000,000,000$ bps

$1024^2 \times 8$ bits

$1024^3 \times 8$ bits

Transfer rates: base-10 ($\times 1000$); file sizes: base-2 ($\times 1024$)

File size = Time $\times$ Data transfer rate