Bit Rate, Bandwidth, & Latency
CSN-1.B — measuring data transfer and network speed
Bit Rate, Bandwidth, and Latency
The internet runs on speed. But not all “speed” is the same. You need to know the difference between how much data can move, how fast it actually moves, and how long a round trip takes.
What each term actually means
How it feels in real life
Click each scenario to see which network property is at play.
🃏 Match each term to its correct definition
Click a term on the LEFT, then click its definition on the RIGHT. Match all 3 to win!
✅ Quick check — AP CSP level easy
💡 Remember:
Bandwidth = max pipe size
Bit rate = actual speed
Latency = delay / ping time
Key Vocabulary (AP CSP Cram Sheet)
| Term | Definition | AP Tip |
|---|---|---|
| Bit rate | Actual bits sent per second (Mbps) | Lower bit rate = lower quality video |
| Bandwidth | Maximum possible bit rate of a system | The “size of the pipe” — theoretical limit |
| Latency | Time delay between send and receive | Measured in milliseconds (ms) — “ping” |
| Mbps | Megabits per second (1 million bits) | 8 Megabits = 1 Megabyte (MB) |
| Round-trip time (RTT) | Total time from click to response | Satellite internet has high RTT (~600ms) |
How AP CSP Tests This (Made Simple)
Easy way to remember:
- Bandwidth = How fat is the straw? (max capacity)
- Bit rate = How fast is the milkshake actually flowing? (real speed)
- Latency = How long until the first sip reaches your mouth? (delay)