Network devices

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9 Terms

1
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Hubs

Layer 1 device, known as a multi-port repeater. Connects collision domains, making them bigger

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What are the types of hubs

passive, active, and smart

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Passive Hub

repeats suignal without amplification

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Active Hub

boosts signal to overcome cable length limitations

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Smart Hub

like an active hub with enhanced features like SNMP for remote configuration

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Bridges

  • Layer 2 device

  • Analyzes source MAC addresses to populate MAC address table

  • Use destination MAC addresses to decide where to forward traffic

  • Divide collision domains, improving both network security and efficiency

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Switches

  • Operates at layer 2

  • Modern replacement for hubs often referred as multiport bridge

  • Each port operates in its own collision domain

  • Learns MAC addresses and uses MAC address table to forward traffic

  • improves traffic management, minimizes collisions, and enhances security

  • supports full duplex, enabling simultaneous two-way communication without interference

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Routers

  • Works in Layer 3

  • Use IP addresses to direct network traffic

  • divide broadcast domains to improve overall network performance

  • offer multiple interface types for flexible and versatile connections

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Layer 3 switches (Multilayer switch)

  • Function at layer 3, with each port acting as its own broadcast domain

  • integrate the roles of both switches and routers

  • well suited for internal network routing, but not ideal for large scale routing tasks