Spanning Tree

Question 1

defines how often the root bridge originates Hello BPDUs

Answer 1

Hello Time
Default setting: 2 seconds

Question 2

is the length of the listening and learning port stages, with a default of 15 seconds for each individual stage

Answer 2

Forward delay
default 15 seconds for each stage

Question 3

Compare WPA, WPA2, WPA

Answer 3