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NETWORK CABLING
Chapter 2
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•Understand the need for proper network management.
•Able to understand the need for network security and types of security involved.
•Aware of the differences between the modern and traditional networking system
•Students to understand the definition and types of Network.
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•Topologies
•LAN Cable Types
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TOPOLOGIES
There are three main local area network (LAN) topologies: Bus
Star
Ring
Other network topologies include: Mesh
Wireless
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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.
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THICK AND THIN COAXIAL BUS
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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.
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A SIMPLE STAR TOPOLOGY
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A HIERARCHICAL STAR TOPOLOGY
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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.
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A RING NETWORK
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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
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LAN MESH
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ENTERPRISE MESH
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WIRELESS TOPOLOGY
Cell-based technology that uses unbounded media
Two wireless topologies: Ad hoc
Infrastructure
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AD HOC WLAN
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INFRASTRUCTURE WLAN
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LAN CABLE TYPES
Three cable types are used in LANs: Coaxial
Twisted pair
Fiber optic
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COAXIAL CABLE
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Chapter 2: NETWORK CABLING 21
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UNSHIELDED TWISTED PAIR (UTP) CABLE
Chapter 2: NETWORK CABLING 23
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UTP CONNECTORS
Cat 5/ RGJ45
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FIBER OPTIC CABLE
Chapter 2: NETWORK CABLING 26
Chapter 2: NETWORK CABLING 27
Fiber Optics Connectors
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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.
