CMS专题
多选题Which three statements about STP timers are true？（）ASTP timers values （hello， forward delay， max age） are included in each BPDU.BA switch is not concerned about its local configuration of the STP timers values. It will only consider the value of the ST
题目
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.
参考答案和解析
相似问题和答案
第1题：
Which two statements are true about IS -IS routing?（）
- A、Based on the default timers, OSPF d etects a failure faster than IS - IS does.
- B、OSPF default timers permit more tuning than IS - IS does.
- C、IS - IS is more efficient than OSPF in the use of CPU resources.
- D、OSPF is more scalable than IS - IS because of its ability to identify normal, stub, an d NSSA areas.
- E、IS - IS and OSPF are both Open Standard, link - state routing protocols which support VLSM.
正确答案:C,E
第2题：
Which three statements about Label-Switched Paths （LSPs） are true？ （）
- A、 LSPs are bidirectional.
- B、 LSPs are unidirectional.
- C、 LSPs can be signaled by CAC.
- D、 LSPs can be configured explicitly.
- E、 LSPs can be configured dynamically.
正确答案:B,D,E
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?（）
- 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 portatates are blocking,discarding,learing,orforwarding.
- 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.
正确答案:A,B,F
第5题：
Which three statements about performance analysis by SQL Performance Analyzer are true? （）(Choose three.)
- A、It detects changes in SQL execution plans.
- B、It produces results that can be used to create the SQL plan baseline.
- C、The importance of SQL statements is based on the size of the objects accessed.
- D、It generates recommendations to run SQL Tuning Advisor to tune regressed SQLs.
- E、It shows only the overall impact on workload and not the net SQL impact on workload.
正确答案:A,B,D
第6题：
Which of these statements is true about ssids configured in cisco adu？（）
- A、ssids are not case-sensitive.
- B、ssids must be listed in the same order in the adu as they are in the access point.
- C、a maximum of three ssids may be configured.
- D、ssids may have a maximum of 16 characters.
正确答案:C
第7题：
Which three statements are true about terms in a policy?（）
- A、The order of the terms in a policy is irrelevant
- B、The action is specified in a then statement
- C、Ters are optional in a policy
- D、The match condition can be identified with a from statement
- E、Every policy must contain at least one term
正确答案:B,D,E
第8题：
Which two statements about spanning tree path cost are true？（）
- A、The path cost can be changed for an interface using the spanning-tree cost command
- B、The path cost can be changed for an interface using the stp path-cost command
- C、The SPT default path cost depends on the interface speed
- D、The STP default path cost is similar for all interface
正确答案:A,C
第9题：
Which three statements are true about terms in a policy?（）
- A、The order of the terms in a policy is irrelevant.
- B、The action is specified in a then statement.
- C、Terms are optional in a policy.
- D、The match condition can be identified with a from statement.
- E、A from statement is mandatory in a term.
正确答案:B,C,D
第10题：
Which three statements are true about policing？ （）
- A、Out-of-profile packets are queued.
- B、It causes TCP retransmits.
- C、Marking and remarking are not supported.
- D、It does not respond to BECN and foresight messages.
- E、It uses a single- and two-bucket mechanism for metering.
正确答案:B,D,E