|  |  | 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: Media Access Control (MAC) Physical Layer Protocol (PHY) Physical Layer Medium (PMD) 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.