Which two options does Cisco PfR use to control the entrance link selection with inbound  optimization？（）

多项选择题Whichtwoareeffectsofconnectinganetworksegmentthatisrunning802.1Dtoanetworksegmentthatisrunning802.1w？（）

A.the entire network switches to 802.1D and generates BPDUs to determine root bridfe status.
B.A migration delay of three seconds occurs when the port that is connected to the 802.1D bridge comes up
C.The entire network reconverges and a unique root briddge for the 802.1D segment， and a root bridge for the 802.1W segment， is chosen
D.the first hop 802.1w switch that is connected to the 802.1D runs entirely in 802.1DCompatibility mode and converts the BPDUs to either 802.1D or 802.1W segments of the network
E.Classic 802.1D timers， Such as forward Delay and Max-age， will only be used as a backup， and will not be necessary if point-to-point links and edge prots are properly identified and set by the administrator.

多项选择题Whichtwostatementsaretrueabouttrafficshaping？（）

A.Out-of-profile packets are queued.
B.It causes TCP retransmits.
C.Marking/remarking is not supported.
D.It does not respond to BECN and ForeSight Messages.
E.It uses a single/two-bucket mechanism for metering.

多项选择题Whenyouaretroubleshootingduplexmismatches，whichtwoerrorsaretypicallyseenonthefullduplexend？（）

A.runts
B.FCS errors
C.interface resets
D.late collisions

单项选择题AnewBackupConnectionisbeingdeployedonaremotesiterouter.thestabilityoftheconnectionhasbeenaconcern.inordertoprovidemoreinformationtoEIGRPRegardingthisinterface，Youwishtoincorporatethe Reliability costmetricintheEIGRPCalculationwiththecommandmetricweights10101.WhatimpactwillthismodificationontheremotesiterouterhaveforotherexistingEIGRPneighborshipsfromthesameEIGRPDomain？（）

A.Existing Neighbors will immediately begin using the new metric.
B.Existing Neighbors will use the new metric after clearing the EIGRP Neighbors.
C.Existing Neighbors will resync， maintaining the neighbor relationship
D.All ecisting neighbor relationships will go down

单项选择题AbranchrouterisconfiguredwithanegressQoSpolicythatwasdesignedforatotalnumberof10concurrentVOIPCalls.DuetoExpansion，15VOIPCallsarenowrunningoverthelink，butafterthe14thcallwasestablished，allcallswereaffectedandthevoicequalitywasdramaticallydegraded.Assumingthatthereisenoughbandwidthonthelinkforallofthistraffic，whichpartoftheQOSconfigurationshouldbeupdatedduetothenewtrafficprofile？（）

A.Increase the shaping rate for the priority queue.
B.Remove the policer applied on the priority queue.
C.Remove the shaper applied on the preiority queue.
D.Increase the policing rate for the priority queue.