How does the cut-through switching technique work?

A.) By using broadcast address as source addresses

B.) The switch waits only for the header to be received
before it checks

the destination address and starts forwarding the packets

C.) The LAN switch copies the entire frame into its onboard
buffers and

then looks up the destination address in its forwarding, or
switching,

table and determines the outgoing interface

D.) By using a Class I repeater in a collision domain

Answer Posted / guest

Answer: B

Cut-Through switching copies only the destination address
which is the

first 6 bytes after the frame preamble into its buffer. The
LAN switch

then looks up the destination address in its switching table and

determines the outgoing interface. The frame is then sent to the

interface. A cut-through switch provides reduced latency
because it

begins to forward the frame as soon as it read the
destination address

and determines the outgoing interface.

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