|  |  | Summary

In this chapter, you learned that:

- the term token-ring refers both, to IBM's token-ring and to IEEEs 802.5 specification
- FDDI has four specifications:

> 1. Media Access Control (MAC)
> 2. Physical Layer Protocol (PHY)

> 3. Physical Layer Medium (PMD)

> 4. Station Management (SMT)

- Ethernet and IEEE 802.3 currently maintain the greatest market share of any LAN protocol
- the term Ethernet is often used to refer to all carrier sense multiple access/collision detection (CSMA/CD) LAN’s that generally conform to Ethernet specifications, including IEEE 802.3

Additionally, you learned about Layer 2 devices and their effects on data flow. Finally, you were introduced to basic Ethernet 10BASE-T troubleshooting. In the next chapter, you will be introduced to network design and documentation.