常用计算机应用软件操作

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1、常用计算机应用软件操作Thefollowing()descriptionofthefunctionalityofthePCfirewallisincorrect・AfirewallcanchecktrafficinandoutoftheIntranet・FirewallBcanapplythegatewaytechnologyapplicationlayertoestablishprotocolfilteringandforwardingfunctions・TheCfirewallcanusefilteringtechnologytoselect

2、packetsatthenetworklayerAfirewallcanblockinternalthreatsandattacksAnswer:DThemainfunctionoftheARPprotocolis().AparsestheIPaddresstothephysicaladdressBparsesthephysicaladdresstoIPCparsesthehostnametotheIPaddressDparsestheIPaddresstothehostnameAnswer:A,PPPOEcontains()and()phase

3、s.AsendandreceiveBPPPvalidationandtransmissionCfindsandPPPsessionsDsessionandtransferAnswer:CItemtype:singleitemchoiceExamscore:2Itemdifficulty:2Question:3TheIPaddressofAgivencomputerAis132.121.100.1,andthesubnetmaskis〃255.255.0.0",andthecomputerbelongsto()・AclassAnetworkBcla

4、ssBnetworkCclassCnetworkClassDnetworkExamscore:2Itemdifficulty:2Question:3ThefirewalTssecuritycontroldoesnotworkonwhichpartofthenextsection()A.thetransportlayerB.thenetworklayerThedatalinklayerD.thephysicalAnswer:DItemtype:singleitemchoiceExamscore:2Itemdifficulty:2Question:3

5、Transparentbridgeiswherethemainworkisinthenetworkprotoco1.Layer1A.B.layer2C.layer3Layer4D.Answer:BItemtype:singleitemchoiceTestscores:1.Itemdifficulty:2Question:3TheaverageusercurrentlyUSEStheInternetineitherway.AmypolumboPPOEdialB.WLANThefiberisdirectlyinthedoor,derocketedin

6、toModemTestscores:1.Itemdifficulty:2Question:3IfaclassCnetwork,maskfor255.255.255.248,validhostaddressespersubnetnumberis(),asktheCnetwork,canprovide()ahostaddress・8224A.4252B.6192C.16240D.Answer:CItemtype:singleitemchoiceExamscore:2Thedifficultyofthequestions:3Question:3TheP

7、PPauthenticationmethodhas()・ACHECKBCHAPCRAPDPAPAnswer:theBDItemtype:multiplechoicequestionsExamscore:2Itemdifficulty:2Question:3Firewallsecuritycontroltechniquesmainlyincludethefollowing:A.packetfilterB.theagentC.statedetectionA.safetycertificationItemtype:multiplechoicequest

8、ionsExamscore:2Itemdifficulty:2Question:3Themainworkpatternsoffirewa