Module 08 · Section 1.3.2
Wired vs Wireless
Ethernet uses physical cables. Guided medium. Highly reliable and immune to airborne interference.
- ✓High bandwidth — supports Gigabit speeds.
- ✓Secure — data cannot be easily intercepted.
- ✓Low latency — consistent response times.
- ✗Restricted mobility — devices must remain connected.
Wi-Fi uses radio waves. Unguided medium. Signals propagate through the air and can be obstructed.
- ✓High mobility — connect from anywhere within range.
- ✗Subject to interference from walls and obstacles.
- ✗Lower security — signals can be intercepted.
- ✗Lower bandwidth than wired.
Interference level: 0
⚠ Examiner Warning: Interference Detail
Saying wireless is "slow" is too vague. State it is weakened by interference from physical obstacles or has lower bandwidth.
| Feature | Ethernet | Wi-Fi |
|---|---|---|
| Medium | Guided | Unguided |
| Speed | Very high | Lower |
| Security | Very secure | Less secure |
Mode: Ethernet
Ethernet: Guided medium, high reliability