Which solution must the architect choose?

Refer to the exhibit.

An architect is designing a network for a customer supporting a Wake-on-LAN application.

Which solution must the architect choose?
A . IP directed-broadcasts on R1
B. spanning-tree uplinkfast on SW1
C. spanning-tree uplinkfast on SW2
D. IP directed-broadcasts on R2

View Answer

Answer: D

Explanation:

"IP directed broadcast" must be supported on the last router to the destination subnet. Since the sleeping PC’s dont have IP adresses, the machines must be calles awake by broadcast that behaves like an unicast untill they reach the destination network. There the directed broadcast is handled like a proper broadcast to wake all WOL machines.

https://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/91672-catl3-wol-vlans.html