多项选择题
Which two of these key fields are used to identify a flow in a traditional NetFlow implementation？（）
A. source port
B. output interface
C. next-hop IP address
D. source MAC address
E. destination IP address
F. next-hop MAC address
多项选择题 TheSchuylerandLivingstonIronWorkshasbeenworkingongettingitsnetworksecurityundercontrol.IthassetupVPNwithIPSeclinkstoitssuppliers.Ithasinstallednetworkvulnerabilityscannerstoproactivelyidentifyareasofweakness，anditmonitorsandrespondstosecurityeventsastheyoccur.Italsoemploysextensiveaccesscontrollists，statefulfirewall implementations，anddedicatedfirewallappliances.Thecompanyhasbeengrowingveryfastlatelyandwantstomakesureitisuptodateonsecuritymeasures.Whichtwoareasofsecuritywouldyouadvisethecompanytostrengthen？（）
单项选择题 YouarethenetworkconsultantfromCisco.com.Yourcustomerhaseightsitesandwilladdinthefuture.Branchsitetobranchsitetrafficisapproaching30percent.Thecustomer’sgoalsaretomakeiteasiertoaddbranchsitesinthefutureandtoreducetrafficthroughthehub.WhichVPNtopology shouldyourecommend？（）
单项选择题 ABCCompanyhas1500manageddevicesand15，000endusersonacampusnetwork.LANManagementSolution（LMS）isbeingdeployedasthenetworkmanagementapplication.Whatis the recommendednumberofnetworkmanagementserver（s）？（）