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Cisco CCENT ICND1 100-101 Flash Cards and Exam Practice Pack
book

Cisco CCENT ICND1 100-101 Flash Cards and Exam Practice Pack

by Eric Rivard
July 2013
Intermediate to advanced content levelIntermediate to advanced
496 pages
6h 10m
English
Cisco Press
Content preview from Cisco CCENT ICND1 100-101 Flash Cards and Exam Practice Pack

Section 9. Implementing VLANs and Trunks

Switches operate on Layer 2 of the OSI model and routers operate on Layer 3. Switches and routers increase the number of collision domains, decreasing the amount of collisions in a network; routers also increase the number of broadcast domains while reducing their size.

Prior to the introduction of VLANs, network designers segmented large Layer 2 networks with routers. A router would be installed between the two networks. All data communication between the two would pass through the router, and the broadcast domain was limited to the physical location of the network.

VLANs introduced a way to logically segment a broadcast domain within a switch. Additionally, VLANs are not bound to a physical location. ...

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ISBN: 9780133410686Purchase book