STP timers values （hello， forward delay， max age） are included in each BPDU.
A switch is not concerned about its local configuration of the STP timers values. It will only consider the value of the STP timers contained in the BPDU it is receiving.
To successfully exchange BPDUs between two switches， their STP timers value （hello， forward delay， max age） must be the same.
If any STP timer value （hello， forward delay， max age） needs to be changed， it should at least be changed on the root bridge and backup root bridge.
On a switched network with a small network diameter， the STP hello timer can be tuned to a lower value to decrease the load on the switch CPU.
The root bridge passes the timer information in BPDUs to all routers in the Layer 3 configuration.
第1题：
Which two statements are true about IS -IS routing?（）
第2题：
Which three statements about Label-Switched Paths （LSPs） are true？ （）
第3题：
A. RSTP significantly reduces topology reconverging time after a link failure.
B. RSTP expends the STP port roles by adding the alternate and backup roles.
C. RSTP port atates are blocking,discarding,learing,or forwarding.
D. RSTP also uses the STP proprsal-agreement sequence.
E. RSTP use the same timer-baseed process as STP on point-to-point links.
F. RSTP provides a faster transition to the forwarding state on point-to-point links than STP does.
第4题：
Which three statements about RSTP aretrue?（）
第5题：
Which three statements about performance analysis by SQL Performance Analyzer are true? （）(Choose three.)
第6题：
Which of these statements is true about ssids configured in cisco adu？（）
第7题：
Which three statements are true about terms in a policy?（）
第8题：
Which two statements about spanning tree path cost are true？（）
第9题：
Which three statements are true about terms in a policy?（）
第10题：
Which three statements are true about policing？ （）