10Base-T Ethernet Overview | Generated by AI
Here’s a detailed breakdown of 10Base-T and its specifications:
🔹 10Base-T Overview
- Standard: IEEE 802.3i (Ethernet over twisted pair).
- Speed: 10 Mbit/s (Megabits per second).
- The “10” in the name directly indicates the 10 Mbps data rate.
- Cabling: Uses Unshielded Twisted Pair (UTP) cables, typically Category 3 (Cat3) or higher (e.g., Cat5, Cat5e).
- Topology: Star topology (devices connect to a central hub or switch).
- Maximum Segment Length: 100 meters (per cable run between a device and the hub/switch).
- Encoding: Uses Manchester encoding for signal transmission.
🔹 Why Not the Other Options?
| Option | Speed | Explanation |
|---|---|---|
| A | 100 Mbit/s | This is 100Base-TX (Fast Ethernet), not 10Base-T. |
| B | 50 Mbit/s | No Ethernet standard uses 50 Mbps over twisted pair. |
| C | 20 Mbit/s | No Ethernet standard uses 20 Mbps. |
| D | 10 Mbit/s | Correct: Matches the 10Base-T standard. |
🔹 Key Features of 10Base-T
- Half-Duplex Communication:
- Devices can either transmit or receive at a time (not simultaneously).
- Uses CSMA/CD (Carrier Sense Multiple Access with Collision Detection) to manage collisions.
- Connectors:
- Uses RJ-45 connectors (8P8C modular plugs).
- Hubs vs. Switches:
- Originally designed for hub-based networks (shared bandwidth).
- Later, switches replaced hubs to enable full-duplex communication (doubling effective speed to 20 Mbps in full-duplex mode).
- Legacy but Foundational:
- 10Base-T was widely used in the 1990s and laid the groundwork for faster Ethernet standards (e.g., 100Base-TX, 1000Base-T).
🔹 Comparison with Other Ethernet Standards
| Standard | Speed | Cabling | Year Introduced | Notes |
|---|---|---|---|---|
| 10Base-T | 10 Mbps | Cat3+ UTP | 1990 | First twisted-pair Ethernet. |
| 100Base-TX | 100 Mbps | Cat5+ UTP | 1995 | Fast Ethernet. |
| 1000Base-T | 1 Gbps | Cat5e+ UTP | 1999 | Gigabit Ethernet. |
| 10GBase-T | 10 Gbps | Cat6a+ UTP | 2006 | 10-Gigabit Ethernet. |
🔹 Why 10Base-T Matters
- Cost-Effective: Used existing telephone-grade twisted pair wiring (Cat3), reducing infrastructure costs.
- Scalability: Star topology made it easy to expand networks.
- Foundation: Paved the way for modern Ethernet standards (e.g., 100 Mbps, 1 Gbps, and beyond).
🔹 Summary
10Base-T is 10 Mbps Ethernet over twisted pair, and its name explicitly reflects its speed. The correct answer is D: 10Mbit/s.
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