1b. ethernet (38 slide)
DESCRIPTION
1b. EthernetTRANSCRIPT
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CSMA/CD
LOCAL AREA NETWORKS (LANS)
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Minimum frame length/Transmission rate is proportional to Collision domain / Propagation speed
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Ethernet layers
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Ethernet frame
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Ethernet implementation
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Ethernet implementation
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Ethernet implementation
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Ethernet implementation
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Fast Ethernet implementation
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Fast Ethernet implementation
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Fast Ethernet implementation
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Gigabit Ethernet implementation
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Gigabit Ethernet implementation
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Token passing
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Token passing
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Token passing
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Token passing
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Data frame
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MAU
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Spread spectrum techniques
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Spread spectrum techniques
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ISM bands
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BSSs
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ESS
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CSMA/CA
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CONNECTING DEVICES
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Connecting devices
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Repeater
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A repeater connects segments of a LAN together.
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A repeater forwards every packet; it has no filtering capability.
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Hubs
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A bridge has a table used in filtering decisions.
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Bridge
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A bridge connects segments of a LAN together.
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A router is a three-layer (physical, data link, and network) device.
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A repeater or a bridge connects segments of a LAN. A router connects independent LANs or WANs to create an internetwork (internet).
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Routing example
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A router changes the physical addresses in a packet.