47 Copyright Goodheart-Willcox Co., Inc. 10Base2 10Base5 10BaseT alien crosstalk (AXT) amplifi er analog signal automatic medium-dependent inter- face crossover (Auto-MDIX) AWG rating bandwidth baseband broadband carrier-sense multiple access with collision avoidance (CMSA/CA) carrier-sense multiple access with collision detection (CSMA/CD) coaxial cable crossed pair crossover cable crosstalk decibel (dB) digital signal equal level far-end crosstalk (ELFEXT) far-end crosstalk (FEXT) full-duplex ground half-duplex impedance interference latency magnetic induction maximum transmission unit (MTU) near-end crosstalk (NEXT) noise open plenum-rated Power over Ethernet (PoE) refl ected loss resistance reversed pair RG-58 RG-6 RG-8 rollover cable short simplex split pair straight-through cable terminating resistor time to live (TTL) twisted pair Overview Whether you are troubleshooting or designing a network, you must be familiar with the various types of network media. Th is chapter presents a general overview of net- work media and its electrical characteristics and covers copper-core cable in detail. In the following chapters, fi ber-optic and wireless network media are covered, re- spectively. To understand the characteristics and limitations of copper-core cable, you will fi rst be introduced to some electronics terminology. Later, the IEEE 802.3 and 802.5 standards are covered. You will see how these standards relate to network design and will understand the importance of knowing their specifi cations. Key Terms Network+ Note In this chapter, 10Base2, 10Base5, and token ring have been presented as a historical reference to networking. You will see these particular technologies referenced on the Internet when you conduct networking-related searches. You will most likely not see any questions related to these technologies on the CompTIA Network+ exam.