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• Repeaters • Hubs • Bridges/Switches • Routers • Gateways • Multiplexers
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Repeaters
• Signal diminishes over distance due to attenuation
• A device used to extend the distance of a network
• Regenerates the electrical signal on the network media
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Hubs
• Basically a multiport repeater
• Connects a number of computers together in a star
• May have both coax or UPT connections to enable connection to another type of segment
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Bridges
• Connects two network segments together
• Filters traffic that passes between the segments
• Only allows traffic destined to other segment
• Reduces congestion
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Switches
• A switch is a bridge with multiple ports
• Connects more than one segment or computer together
• Only allows traffic destined a particular segment to pass
• Reduces congestion
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Routers
• Used to connect complicated networks with many segments
• Filters traffic and makes intelligent decisions on the data path
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Gateway
• Used to convert protocols between different types of network
• Filters traffic and makes intelligent decisions on the data path
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Multiplexer (MUX)
• Combines multiple signals into one to be transmitted over a single cable or media
• Not base band
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