Exploration_Network_Chapter_8.ppt

* * * * * * * * 8.3.2 Copper Media External Signal Interference 8.3.3 Unshielded Twisted Pair (UTP) Cable The basic characteristics of UTP cable 8.3.3 Unshielded Twisted Pair (UTP) Cable UTP Cable Types －Ethernet Straight-through －Ethernet Crossover －Rollover 8.3.4 Other Copper Cable Coaxial cable 8.3.4 Other Copper Cable Coaxial cable 8.3.4 Other Copper Cable Shielded Twisted-Pair (STP) Cable 8.3.5 Copper Media Safety Types of safety issues when working with copper cabling 8.3.6 Fiber Media Fiber Media Cable Construction 8.3.6 Fiber Media Fiber Media Cable Construction 8.3.6 Fiber Media Fiber provides full duplex communications with a cable dedicated to each direction. 8.3.6 Fiber Media Fiber optic cables can be broadly classified into two types: single-mode and multimode. i 8.2.7 Wireless Media Wireless media carry electromagnetic signals at radio and microwave frequencies that represent the binary digits of data communications. 8.3.7 Wireless Media Types of Wireless Networks －Standard IEEE 802.11 －Standard IEEE 802.15 －Standard IEEE 802.16 －Global System for Mobile Communications (GSM) 8.3.7 Wireless Media The Wireless LAN In general, a wireless LAN requires the following network devices: －Wireless Access Point (AP) －Wireless NIC adapters 8.3.7 Wireless Media WLAN Ethernet-based standards include: IEEE 802.11a - Operates in the 5 GHz frequency band and offers speeds of up to 54 Mbps. IEEE 802.11b - Operates in the 2.4 GHz frequency band and offers speeds of up to 11 Mbps. IEEE 802.11g - Operates in the 2.4 GHz frequency band and offers speeds of up to 54 Mbps. IEEE 802.11n - The proposed standard defines frequency of 2.4 GHz or 5 GHz. The typical expected data rates are 100 Mbps to 210 Mbps with a distance range of up to 70 meters. 8.3.8 Media Connectors Common Copper Media Connectors 8.3.8 Media Connectors Correct Connector Termination 8.3.8 Media Connectors Common Optical Fiber Connectors 8.4 La