1. 11 NETWORK CABLING Chapter 2

2. Chapter 2: NETWORK CABLING2 TOPOLOGIES There are three main local area network (LAN) topologies: Bus Star Ring Other network topologies include: Mesh Wireless There are three main local area network (LAN) topologies: Bus Star Ring Other network topologies include: Mesh Wireless

3. Chapter 2: NETWORK CABLING3 BUS TOPOLOGY The bus topology supports thick and thin coaxial segments. Segments are connected by repeaters. The bus topology uses the baseband signaling method. Signals are broadcast in both directions simultaneously. Both ends of each segment require termination to avoid reflection. End systems connect to the segment in a linear manner. The bus topology supports thick and thin coaxial segments. Segments are connected by repeaters. The bus topology uses the baseband signaling method. Signals are broadcast in both directions simultaneously. Both ends of each segment require termination to avoid reflection. End systems connect to the segment in a linear manner.

4. Chapter 2: NETWORK CABLING4 THICK AND THIN COAXIAL BUS

5. Chapter 2: NETWORK CABLING5 STAR TOPOLOGY The star topology can use coaxial, twisted pair, or fiber optic cable. A central device (hub) connects hubs and nodes to the network. Each node connects to its own dedicated port on the hub. Hubs broadcast transmitted signals to all connected devices. You can connect multiple hubs to form a hierarchical star topology. The star topology uses the baseband signaling method. The star topology can use coaxial, twisted pair, or fiber optic cable. A central device (hub) connects hubs and nodes to the network. Each node connects to its own dedicated port on the hub. Hubs broadcast transmitted signals to all connected devices. You can connect multiple hubs to form a hierarchical star topology. The star topology uses the baseband signaling method.

6. Chapter 2: NETWORK CABLING6 A SIMPLE STAR TOPOLOGY

7. Chapter 2: NETWORK CABLING7 A HIERARCHICAL STAR TOPOLOGY

8. Chapter 2: NETWORK CABLING8 RING TOPOLOGY The ring topology can use twisted pair or fiber optic cabling. A central device (hub) connects hubs and nodes to the network. Each node connects to its own dedicated port on the hub. You can connect multiple hubs to form a larger ring. The ring topology uses the baseband signaling method. Frames are transmitted around the ring from node to hub to node. Media Access Control (MAC) is used for token passing. The ring topology can use twisted pair or fiber optic cabling. A central device (hub) connects hubs and nodes to the network. Each node connects to its own dedicated port on the hub. You can connect multiple hubs to form a larger ring. The ring topology uses the baseband signaling method. Frames are transmitted around the ring from node to hub to node. Media Access Control (MAC) is used for token passing.

9. Chapter 2: NETWORK CABLING9 A RING NETWORK

10. Chapter 2: NETWORK CABLING10 MESH TOPOLOGY Typically uses fiber optic cabling for redundant wide area network (WAN) links Provides multiple paths to destinations for fault tolerance Supports baseband and broadband signals Requires an enormous amount of cable Typically uses fiber optic cabling for redundant wide area network (WAN) links Provides multiple paths to destinations for fault tolerance Supports baseband and broadband signals Requires an enormous amount of cable

11. Chapter 2: NETWORK CABLING11 LAN MESH

12. Chapter 2: NETWORK CABLING12 ENTERPRISE MESH

13. Chapter 2: NETWORK CABLING13 WIRELESS TOPOLOGY Cell-based technology that uses unbounded media Two wireless topologies: Ad hoc Infrastructure Cell-based technology that uses unbounded media Two wireless topologies: Ad hoc Infrastructure

14. Chapter 2: NETWORK CABLING14 AD HOC WLAN

15. Chapter 2: NETWORK CABLING15 INFRASTRUCTURE WLAN

16. Chapter 2: NETWORK CABLING16 LAN CABLE TYPES Three cable types are used in LANs: Coaxial Twisted pair Fiber optic Three cable types are used in LANs: Coaxial Twisted pair Fiber optic

17. Chapter 2: NETWORK CABLING17 COAXIAL CABLE

18. Chapter 2: NETWORK CABLING18 AUI (ATTACHMENT UNIT INTERFACE) CABLE

19. Chapter 2: NETWORK CABLING19 THIN ETHERNET HARDWARE

20. Chapter 2: NETWORK CABLING20 UNSHIELDED TWISTED PAIR (UTP) CABLE

21. Chapter 2: NETWORK CABLING21 UTP CONNECTORS

22. Chapter 2: NETWORK CABLING22 UTP CABLE GRADES CategoryFrequencyPrimary Application 1Up to 0 MHzVoice networks 2Up to 1 MHzVoice and low-speed data networks less than 4 Mbps 3Up to 16 MHzVoice and data networks from 4 to 100 Mbps 4Up to 20 MHz16-Mbps Token Ring 5Up to 100 MHz100-Mbps Fast Ethernet 5eUp to 100 MHz1000-Mbps Gigabit Ethernet 6Up to 250 MHz1000-Mbps Gigabit Ethernet

23. Chapter 2: NETWORK CABLING23 FIBER OPTIC CABLE

24. Chapter 2: NETWORK CABLING24 STRAIGHT TIP (ST) CONNECTOR

25. Chapter 2: NETWORK CABLING25 STRAIGHT THROUGH AND CROSSOVER WIRING Wiring within a twisted pair cable is configured as either Straight through, where each wire (or pin) is attached to the same contact point at each end Crossover, where transmit contacts on each end of the cable are connected to the receive contact at the other end

26. Chapter 2: NETWORK CABLING26 STRAIGHT THROUGH WIRING

27. Chapter 2: NETWORK CABLING27 CROSSOVER WIRING

28. Chapter 2: NETWORK CABLING28 SUMMARY The three basic LAN topologies are bus, star, and ring. WLANs are becoming more popular. Mesh networks are not typically used in LANs. The primary cable types used in LANs are coaxial, twisted pair, and fiber optic. The three basic LAN topologies are bus, star, and ring. WLANs are becoming more popular. Mesh networks are not typically used in LANs. The primary cable types used in LANs are coaxial, twisted pair, and fiber optic.