Answer / guest

Answer: B C

Frame identification (frame tagging) uniquely assigns a
user-defined ID

to each frame. This technique was chosen by the IEEE
standards group

because of its scalability.

In this approach, a unique user-defined identifier is placed
in the

header of each frame as it's forwarded throughout the switch
fabric. The

identifier is understood and examined by each switch prior
to any

broadcasts or transmissions to switch ports of other
switches, router,

or end-station devices. When the frame exits the switch
fabric, the

switch removes the identifier before the frame is
transmitted to the

target end-station.

The following points summarize frame tagging:

Used by Catalyst 3000 and 5000 series switches

Specifically developed for multi-VLAN, inter-switch
communication

Places a unique identifier in the header of each frame

Functions at layer 2

Requires little processing or administrative overhead

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