[单选题]The Ezonexam network administrator has issued the "VTP password ezonexam" command on a Cisco device. What is the purpose of this command?

正确答案 ：D

It is used to validate the sources of VTP advertisements sent between switches

[多选题]There are 2 switches in the Ezonexam LAN, with no routers. Ports 1, 2 & 3 are assigned to VLAN 1 in switch 1 and 2 and ports 4, 5 & 6 are assigned to VLAN 2 in both switches. These two switches are connected together via a trunked link. Which of the conditions below would verify trunk and VLAN operation? (Select all valid answers)

正确答案 ：ADE

Host 1 on VLAN 1 can ping Host 2 on VLAN 1

Host 4 on VLAN 2 can not ping Host 1 on VLAN 1

Host 4 on VLAN 2 can ping Host 2 on VLAN 2

解析：解析：Explanation:

[单选题]对于使用链路状态路由协议的路由器如何选择最佳路线到达子网，下列哪项是正确的（）

正确答案 ：B

通过针对链路状态数据库中的信息运行SPF算法，路由器会计算出最佳路由

[多选题]What are two results of entering the VESwitch(config)# vtp mode client command on a Catalyst switch in the Ezonexam LAN? (Choose two.)

正确答案 ：BC

The switch will forward VTP summary advertisements

The switch will process VTP summary advertisements

解析：解析：Explanation:Servermode:VTPservershavefullcontroloverVLANcreationandmodificationfortheirdomains.AllVTPinformationisadvertisedtootherswitchesinthedomain,whileallreceivedVTPinformationissynchronizedwiththeotherswitches.Bydefault,aswitchisinVTPservermode.NotethateachVTPdomainmusthaveatleastoneserversothatVLANscanbecreated,modified,ordeleted,andVLANinformationcanbepropagated.Clientmode:VTPclientsdonotallowtheadministratortocreate,change,ordeleteanyVLANs.Instead,theylistentoVTPadvertisementsfromotherswitchesandmodifytheirVLANconfigurationsaccordingly.Ineffect,thisisapassivelisteningmode.ReceivedVTPinformationisforwardedouttrunklinkstoneighboringswitchesinthedomain,sotheswitchalsoactsasaVTPrelay.Transparentmode:VTPtransparentswitchesdonotparticipateinVTP.Whileintransparentmode,aswitchdoesnotadvertiseitsownVLANconfiguration,andaswitchdoesnotsynchronizeitsVLANdatabasewithreceivedadvertisements.InVTPversion1,atransparent-modeswitchdoesnotevenrelayVTPinformationitreceivestootherswitches,unlessitsVTPdomainnamesandVTPversionnumbersmatchthoseoftheotherswitches.InVTPversion2,transparentswitchesdoforwardreceivedVTPadvertisementsoutoftheirtrunkports,actingasVTPrelays.ThisoccursregardlessoftheVTPdomainnamesetting.

[单选题]路由器上，清空路由表的命令是（）

正确答案 ：D

clearip route*

[单选题]During the boot sequence, a Ezonexam 2800 series router needs to locate and load an operating system. What is the default order the router uses to find an operating system?

正确答案 ：B

Flash, TFTP server, ROM

解析：解析：Explanation:BootinguptheRouter:CiscorouterscanbootCiscoIOSsoftwarefromtheselocations:1.Flashmemory2.TFTPserver3.ROM(notfullCiscoIOS)Multiplesourceoptionsprovideflexibilityandfallbackalternatives.

[单选题]如果网络中的路由器都是cisco路由器，则优先选择哪一个路由协议（）

正确答案 ：B

EIGRP

[多选题]Ezonexam is migrating to a private IP addressing scheme. Which of the following describe the use of private IP addresses? (Choose two)

正确答案 ：BD

Addresses that cannot be routed through the public Internet.

A scheme to conserve public addresses.

解析：解析：Explanation:

[单选题]路由器上，命令“show int s0”的显示结果为：Serial0 is up,line protocol is down出现该结果的可能原因是（）

正确答案 ：C

两端设备协议不一致

[多选题]You need to configure a default route on a Ezonexam router. Which command will configure a default route on a router?

正确答案 ：ABCD

VE1(config) ip route 0.0.0.0 10.1.1.0 10.1.1.1

VE1(config) ip default-route 10.1.1.0

VE1(config) ip default-gateway 10.1.1.0

VE1(config) ip route 0.0.0.0 0.0.0.0 10.1.1.1

解析：解析：Explanation:Thecommand"IProute0.0.0.00.0.0.0quot;$commandisusedtoconfigureadefaultrouteonarouter.Inthiscase,adefaultroutewithanexthopIPaddressof10.1.1.1wasconfigured.IncorrectAnswers:A.Thiswillbeaninvalidroute,sincethe"10.1.1.0"valuewillspecifythenetworkmask,whichinthiscaseisinvalid.B,C.Thesecommandsareinvalid.Thecommand"ipdefault-network"couldbeused,butnot"ipdefault-route"or"ipdefault-gateway".IPdefault-gatewayisusedonswitches,notrouters.

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