Refertotheexhibit.Inthediagram,theswitchesarerunningIEEE802.1wRSPT.Onwhichportsshouldrootguardbeenabledinordertofacilitatedeterministicrootbridgeelectionundernormalandfailurescenarios?()A.GE-3/1，GE-3/2B.FE-2/1，FE-3/2C.GE-1/1，GE-1/2D.GE-4/1，GE-4/2E.GE-2/1，
题目
Refertotheexhibit.Inthediagram,theswitchesarerunningIEEE802.1wRSPT.Onwhichportsshouldrootguardbeenabledinordertofacilitatedeterministicrootbridgeelectionundernormalandfailurescenarios?()
A.GE-3/1，GE-3/2
B.FE-2/1，FE-3/2
C.GE-1/1，GE-1/2
D.GE-4/1，GE-4/2
E.GE-2/1，GE-2/2
F.GE-3/1，GE-3/2，GE-4/1，GE-4/2，FE-2/1，FE-3/2