ccna640-802題庫v104.選擇題7月滿分版

1、 o o 查看系的軟和硬信息是 如果n邊O配的話將O配的 它的塊大小掩碼地址范圍 考點考查所在網(wǎng)段的范圍是網(wǎng) 考點考查l廣播地 考點使來檢測機的 考點使來檢測機的實 考點構(gòu)備使用交線，n端的需要在一個子網(wǎng)使用交線換有的直通線2l確修改掩碼O，l確錯誤，都O能使他們在一個子網(wǎng) 考點考查所在網(wǎng)段的范圍是默認網(wǎng)關(guān)O屬于個子網(wǎng)，錯默認網(wǎng)關(guān)是個子網(wǎng)的廣播地址，l個地址個地址是組播地址，錯誤 o o 保在保在 哪條命 調(diào)用了協(xié)議，而數(shù)據(jù)包封裝在包中 查看利用率 路由協(xié)議算最佳路由，串口的什N東西必被置l確？在接口Q，只有寬是配置的 路由協(xié)議算最佳路由，串口的什N東西必被置l確？在接口Q，只有寬是配置的 考

2、點當網(wǎng)中使會議發(fā)網(wǎng)非常慢，什N原因引起的 哪一層確定的接收程序的用層提 解網(wǎng)題，先確保網(wǎng)層通信 解網(wǎng)題，先確保網(wǎng)層通信 網(wǎng)層中什N提供了路徑選由路由協(xié)議提供2通過手或者動態(tài)學路由條目實 哪一個命顯示最一次被用來啟路由器的方法 哪O種封裝屬于鏈路的點到點協(xié)議，l思科缺省封裝格式，l確EQUESTION REQUESTION Rfer to the exhibit. W WAN protocol is being FramelAnswer: Section: Chapter 14: W Area Network 由圖中的紅線看到發(fā)接LMI信息2屬于FR的數(shù)據(jù)包QUESTION Wt is the

3、difference n a CSU/DSU and a ACSU/DSUog sigals frm a router to a leed line; a modem og gfrom a router to a le A CSU/DSU og ig from a router to a phone line; a modem converts digital igfrom a router to a le A CSU/DSU converts digital igfrom a router to a phone line; a modem converts f a router to a p

4、hone line.og igA CSU/DSU converts digital igfrom a router to a leeline; a modem converts digital igf a router to a phone line.Answer: Section: Chapter 14: W Area Network CSU/DSU一般是_線，MODEN是將模擬信P數(shù)_信QUESTION A network miir mut fi 200 witch ports to accept traffic f only the currently host v. Wt oldbet

5、hemot efficient waytocfMAC-level security onall these 用戶發(fā)郵認證再在交換機P配置，錯誤，O科學使用，l確錯誤，作量太大 講接口配置r，l確，封裝Q常 在網(wǎng)中，當超過時會發(fā)生什N情況 They eased lThey are idal for full-mesh oTheyThey eased lThey are idal for full-mesh oTheyrequiretheuseofNBMAoptionswhenuingAnswer: Section: Chapter 14: W Area Network ABCQUESTION R

6、fer to the exhibit. Addresses he range /24 are not bi tale to the range. Wd showsif/24areallowediidebug ip s-ipnattranslation ip nat sAnswer: Section: Chapter 8: 那條命看到/24是v在允許QUESTION Airelesnt cannot connect to an 802.11b/g BSS b/g ireless card. The nt section of sdoesnot list anyactiveWLANnts. W i

7、s sible reason for The irc ca is configred on the Thec The ntsIPaddressison thewrongns an irc pre-shared is configred incretly on the Answer: Section: Chapter 11: Wi戶端無法接到無限接入點，查看O到用的無線信2通常Ol確戶端無法接到無限接入點，查看O到用的無線信2通常Ol確的信道2錯戶端的地址配置錯配置Ol確 考點中增強哪n個更強的密算在的隱患要是依 考點哪n種無限密術(shù)依賴高密o暫時密鑰集r協(xié) 長度子網(wǎng)掩 長度子網(wǎng)掩碼，l采用廣播地

8、址更使用算法算路徑，錯誤 最長距離最長距離最長距離最長距離 考點周期性更新，l使用算法，錯 Answer: Section: Chapter 6: IP 路由查原最長掩碼QUESTION WAnswer: Section: Chapter 6: IP 路由查原最長掩碼QUESTION Wd showsif an slistisaigedtoshow ip show i ac show ipshow ip erface erface erface s-erface s-lists Answer: Section: Chapter 7: QUESTION Rfer to the exhibit.

9、W rule does the DHCP server use when there is an IP ?The address is removed fr the til is isTheaddresshetil Only theIP detectedby GratuitousARP isremovedfrm thelOnly the IP detected is removed f the lThe IP il be shown, even after isAnswer: Section: Chapter 5: Maaing Cisco show ip Answer: Section: C

10、hapter 5: Maaing Cisco show ip 命查看哪些ip地址在使用P有突E當突解，地址會被顯示2錯誤QUESTION Rfer to the exhibit. You are connected to the router as user Mike. Wd allows you to output from the OSPF A. terminal isAnswer: Section: Chapter 6: IP C查看會話信息D:查看啟用了ospf的接口的相關(guān)信息QUESTION frto the exhibit. If number 2 f a iv ectedfrom

11、thesetupscript, ppenswhenthe user runsSetup is aitive and any changes i be added to the cnfig Setup effectively starts the frti over as if the router was booted for iC. Setupwill notrunif aneC. Setupwill notrunif anelsecret passwordexitson theD. Setup i not run, because it is only vi when no fat exi

12、ts on the Answer: Section: Chapter roduction to Cisco 保A置和改動被保到配置腳B有效地新開始配置，如果路由器是第一次啟動的配置QUESTION Rfer to the exhibit. W (config-be advertised by d il al the network represented on erface redistributenetwork ethernet0 redistributenetwork Answer: Section: Chapter 6: IP 考點怎N才能讓接口通告RIP路由通告network網(wǎng)段實QU

13、ESTION Rferto the exhibit. W frt can be gathered from the One router is uOne router is ui RIP The network contains a Network is aAnswer: Section: Chapter 6: IP 由圖中看q地經(jīng)在條路由QUESTION Rfer to the exhibit. W type of connection old be supported by the cale diagram PC to router PC to itch servertorouter to

14、 Answer: Section: Chapter 圖中看是一條直通線2構(gòu)備使用交線，_構(gòu)備使用直通線B直通AC/D構(gòu)備使用交QUESTION Rfer to the exhibit. WQUESTION Rfer to the exhibit. W type of connection old be supported by the cale diagram PC to PC to iserverto iitch toAnswer: Section: Chapter QUESTION W to ements describe the Cisco mm ion of VLANs? (Choos

15、e VLAN 1 is the fl Ethernet CDP advertisements are olysent on VLAN 1002. By flt, the maemt VLAN is VLAN 1005. By flthe witchIP address is in VLAN 1005.VLAN 1002 through 1005 are automatically created and cannot be Answer: 考點考查vl知識點v，v，l vlvli網(wǎng)的vlv，vlv2v vl-vl2QUESTION Rfer to the exhibit. W can be t

16、rmi about the router from the console Nocofigrationfile wasfoundin NoNocofigrationfile wasfoundin No fgrti file wasfound in No cofigration file was hefiifile is normal and il lod in 15 Answer: Section: Chapter roduction to Cisco 啟動時缺省讀保在NVRAM面的配置文2提示模式，說明沒有保配置文QUESTION Rfer to the exhibit. W can be

17、trmi from the is locl to the router. is locl to the il age out in ln 1 me has aged out and is marked for dltiAnswer: Section: Chapter roduction to Cisco QUESTION Rfer to the exhibit. Wd old allow the tali to be created on the pool mynats 54 prefix-length outside mynats 54 prefix-length pool mynats 5

18、4 prefix-length 表示掩碼的長度2 表示掩碼 調(diào)用O通是網(wǎng)層的原因 Answer: Section: Chapter3: IP Adreingand-54面除了49外任意一個QUESTION Rferto the exhibit. The user at Wk ionB vi W ion B from eci Server t Server A cannot be reached. W The IP address for Server The IP address for Server A is a broadcast address. The IP address for W

19、k ion B is a subnet address. The gateway for Works ion B is not on the same subnet.The gateway for Server A is not on the same Answer: Section: Chapter 6: IP 4/27所在網(wǎng)范圍-31/272很明顯網(wǎng)關(guān)3O再范圍內(nèi)QUESTION Rfer to the exhibit. W does the (*) he Packet is tin for a lerface to the Packet was translated, but no re

20、sponse was received from the distant evice.Packet was not translated, because no aditioalports are vlPacket wastalt andfast itchetotheAnswer: Section: Chapter 8: 由圖中提示信息看，源經(jīng)有個一個轉(zhuǎn)換，所續(xù)的數(shù)據(jù)包快轉(zhuǎn)發(fā)QUESTION Rfer to the exhibit. Wd sequence will enable PAT from the iid to otid vvvvill not bevvvvill not be ale

21、 to net or i be ale to use SSH, but i be ale to net, but not will be ale to net and Answer: Section: Chapter 7: 題目考查的是ACL用法，首先s要控v的是172網(wǎng)段 _就是F0/0 是i方U f0/1 是out方U_就是到右的數(shù)據(jù)通過m圖 s們看list 100 fa0/0的in方而list101 是f0/1的i方U 所對172網(wǎng)段O生效的是list s們只要看list 100 就選而20格式Ol確，將eq放在目的地址面才會起作用2所SSH但是OQUESTION Wt are thre

22、e advantages of VLANs? (Choose sinitchedVLANs utilize packet filtering to enhance network VLANs v a method of rv IP addresses in lare VLANsrviealo-ernetworkingalternativetoroutedVLANs l VLANs can s to network vbased on department, not phyical loctioyimlifyain mvi, or chninghostsontheAnswer: 在交換網(wǎng)中建立廣

23、播域，l利用的數(shù) 在交換網(wǎng)中建立廣播域，l利用的數(shù)提供P延互聯(lián)網(wǎng)路由網(wǎng)2錯 要想程管理，1交換機配置，1路由達 考查|有地址的范圍除了P面的外都是|有 考查的特增突域的大小，錯增強網(wǎng)安全，l確2OO能直接通信當減少突域時增廣播域的大小2錯簡化交換機管理2答非所 查看是v有路 oAnswer: Answer: Section: Chapter 2: 在太網(wǎng)尋址的時候，依靠的MA地址，每一個網(wǎng)段都需要尋到自的Q一條gateway自MAC作source gateway的mac作tintiMAC作source gateway的mac作tintio封裝Frame，然將Frame轉(zhuǎn)發(fā)去 ，但是數(shù)據(jù)包是O會

24、QUESTION Wtolieareuingthecorrect typeof titpair al (ChooseAnswer: Section: Chapter 線纜題，使用線的備2相備用crossoverO備用cut-thought線纜2console使用的rollor纜QUESTION W of the fll are true rearing bridges and ith (Choose Bridges are n itce because they have fA sitch is a ml Bridges and ichl MAC addresses by xmi the so

25、urce MAC address of each frame v 考查網(wǎng)橋和交換機的|網(wǎng)橋比交換機更快，因他們有更少的端口2錯通過檢查數(shù)據(jù)包的學地址，l網(wǎng)橋轉(zhuǎn)發(fā)廣播包，但交換機O轉(zhuǎn)發(fā)2錯網(wǎng)橋和交換機增突域的大小，錯誤 路由器的格一般比交換機少2增路由器減少延2錯誤 交換機基于軟，網(wǎng)橋基于硬，錯誤2都是基于硬網(wǎng)橋比交換機快2錯誤的端口，l確 W characteristics are ive of a link-e routing W characteristics are ive of a link-e routing rol (Choose prvidscommonvofentiretopl

26、oyexchanges routing tli neighbors calculates shortest pathutilizes event-triggered utilizes frequent periodic Answer: Section: Chapter 6: IP A:提供查看，l確2show pf BCDQUESTION W of the fll ements describe the network he gric (Choose Therearetwobroadcast There are four broadcast Therearesixbroadcast There

27、 are four colli There are v colliThereare seven shenetwork. henetwork. henetwork. henetwork. he network.heAnswer: Section: Chapter 交換機一個端口一個集線器一個突域2邊是集線器，右邊是交換機QUESTION Use the output from the router he grpic above to deri which of the fl are 由圖中幾處畫紅線的地方知只有發(fā)和接路由信息 只有個子每個子網(wǎng)只有個用 所屬網(wǎng)段的范圍是 了 O個端口的流量，哪些流

28、量會 端端 端 端 端端 有O種方式建立鏈 有O種方式建立鏈 每個|域是骨|域，lV層的網(wǎng)O需要多|域，錯誤2就是依賴多|域V層 o 鏈路狀態(tài)路由協(xié)議如何撲數(shù)據(jù)確通過w他路由器的，l確點到點鏈路接收，錯誤ww他路由器接收路由表，錯誤2相互間O直接發(fā)路由表 It supports It isusedtoroutenautonomousIt It supports It isusedtoroutenautonomousIt confinsnetwork instability to oneareaof theIt incraes erhead on the It llxenivcontrol of

29、 routing It is im to cfinRIP Answer: Section: Chapter 6: IP A支持VLSM，lE QUESTION The icehe rm Core and Cre, are both l 2950s. The adreing scheme each company site isasRouter Ethernet port - 1st al Core - 2nd uale Core2 - 3rd ual For this network, which of the fldsmut beconfigredon Core2to allowit to

30、be y f any subnet on the network? (Choose erfaceCore2(config-if)# ip address 0 48 erface vlan 1Core2(config-if)# ip address 1 48 Core2(config)# line con 0Core2(config-line)# password Core2(config)# line vty 0 4 Core2(config-line)#passwordciscoCore2(config)# ip default-gateway Core2(config)#iprouteAn

31、swer: Section: Chapter 10: 實程管理，需要給交換機配置管理IP，需要路由v 配置缺省網(wǎng)關(guān) 配置缺省網(wǎng)關(guān) 無法在交換機P添的原因 o 的范圍是 iiicogtion lod lciAnswer: Section: Chapter 2: QUESTION Whchdetintinaddressesillbeusedbyo send o Ht C?(Choose the IP address of tc1 theMACaddressofitch1 the IP address of HotC the MAC address of HtCthe IP address of t

32、he routers the MAC address of the routers Answer: Section: Chapter 6: IP 數(shù)據(jù)包在轉(zhuǎn)發(fā)的過程中，源目IPO，源目MAC會化QUESTION Wt can be trmi from the lie of show ip route output he exhibit? (Choose The next routingupdateThe next routingupdate canbeexpected in35seconds. The IP address is cofigredon S0/1.The IP address i

33、s cofigredon S0/1. This route is uingthe flmivdistance.The network is to hops away from this Answer: Section: Chapter 6: IP 考點考查RIP的路由條目2通過RIP學到一條到達的路由，Q一跳是，0B QUESTION Rfer to the exhibit. All of the he network are configred it the ip subnet-W network addresses should be used for Link A and Network

34、 A? (Choose Network A - 8/26 NetworkA-28/25 NetworkA-92/26 Link A - /30 Link A - 0/30LinkA-Answer: Section: Chapter3: IP Adreingand配置了ip subnet-zero，使用全0網(wǎng)段BO2CO Dl確2因使用了ip subnet-zeo2 錯誤，包換在網(wǎng)段中 錯誤，包換在網(wǎng)段中 網(wǎng)段所在的范圍是 考點 Router R2 will not fRouter R2 will not f a neighbor relationship it Router R2 i obta

35、in a full routing tl including a fl route, f R2i obtain OSPF updatesfrom R1, but il not obtain afl route from R2 i ve a route for the directly connected serial network, but all other directly networks will be present, as well as the to Ethernet networks connected to Answer: Section: Chapter 6: IP 雖然

36、默認路由口錯誤但是鄰居然回收到 lQUESTION W three IP addresses can be asiged to hosts if the subnet mask is /27 and subnet zero is (Choose Answer: Section: Chapter3: IP Adreingand掩碼27，所一個子網(wǎng)有32個IP，用的30A-31/27，lD2-63/27,lEFQUESTION Rferto the exhibit. A packet source IP address of and a einti IP address arrives at th

37、e HokesB router. tion does the router forwards the received packet out theforwards the received packet out the forwards a packet containing an EIGRP vim out the Serial0/1 forwards a packet containing an ICMP message out the forwards a packet containing an ARP request out the Answer: Section: Chapter

38、 6: IP 路由器中沒有去目的地的路由，返回一個ICMP錯去源IP的路由Q一跳是f0/0，所選QUESTION Rferto the exhibit. From RouterA, a network miit is able the erface of heexhibit, but uable anyof thesubnetsattachedtoRouterB.Basedonthe partial cold be the olmEIGRPdoesnotsupportThe EIGRPEIGRPdoesnotsupportThe EIGRP network ements are incrrec

39、tly iThe IP adring on the erface of RouterA is iTheroutingprotocolmmarizedontheclassful EIGRP has been fig n ivalid autonomous system mr.Answer: Section: Chapter 6: IP QUESTION Wt are three characteristics of the OSPF routing rocl (Choose It converges OSPF is a classful routing It uses cost to tri t

40、he best It uses the DUAL algorithm to em the best OSPF routers send the complete routing tl to all directly attached routers. OSPF routers discover nigbr before exnin routing ifAnswer: Section: Chapter 6: IP 考查OSPFAB:有Section: Chapter 6: IP 考查OSPFAB:有類路由，l EQUESTION Rfer to the exhibit. SW1 and SW2

41、have dfalt figi Wt il happen if host 1 sends Hosts 2, 3, and 4 il receive the Hosts 1, 2, 3, and 4 il receive the Hot 2andtheerface of R1 il receive the Hosts 1, 2 and the erface of R1 il receive the Hosts 1, 2, 3, 4 erface Fa0/0 of R1 il receive the Hosts2, 3, 4, Fa0/0 and Fa0/1 of R1 il receive th

42、e Answer: Section: Chapter 6: IP 考查路由器的能綜P所述，選QUESTION A router haslernd from EIGRP andhasasible t cold beused to reach a ii network. Oneroute itemof 20514560. Anotherrouteisf OSPF mof782. heroutingThe last is fo RIPv2 and has a m of 4. W route or routes ill the router install the OSPF route the EIG

43、RP route the RIPv2 route all threeroutesthe OSPF and RIPv2 考點考查路由條目入路由表的原最 考點考查路由條目入路由表的原最優(yōu)路由才能入2去一目的的多條路由，先比較值值小者優(yōu)先值一直比較值 |別層和O層，錯誤確定備的優(yōu)先，錯誤2沒有個能 廣域網(wǎng)封裝改，l確2如數(shù)據(jù)格式模擬型r數(shù)據(jù)信，錯誤，物理層的信方式化O會影響層數(shù)據(jù)格式錯誤原蜜改，l確 W to ements are true rearing EIGRP? (Choose W to ements are true rearing EIGRP? (Choose Pasive routes

44、 hesof being calculated by EIGRP supports VLSM, route mmi and routingupdate EIGRP exchanges full routing l for it neighboring routers i every Ifthefsibesuc primary route.sor hasahigher advertisednthesorroute, it becomesA query s is used to discover a replacmet for a failed route if a feible sor is f

45、 fr the current routing ifAnswer: Section: Chapter 6: IP C每次更新都發(fā)全部的路由信息，錯誤，增量更新QUESTION Rfer to the heomt n host 1 and host 2 over the -to-WAN, protocol or technology is represented by dashed lie IEEE Answer: Section: Chapter 14: W Area Network AB1CPi QUESTION Rfer to the exhibit. The ihe riQUESTION

46、 Rfer to the exhibit. The ihe ri has a efl ofgrt and the MAC a is plae In iti this network is operating properly. The graphic ected fr in a f lvig host A. W can be concluded from this ifThe MAC addressof host A The router ill forward the .his f to The itch il only forward thisf to the attached All v

47、his LAN except host A ill pass the packet to Layer Answer: Section: Chapter 9: QUESTION Wt is an appropriate use of a fl to v routing to a locl web to ov routingfrom an ISP to a stub to ov t il override the ofige mi routing to ovrouting to a dtiitisnotpcfhe routingalandwhich isidthe Answer: Section:

48、 Chapter 6: IP 考點B提供ISP到p節(jié)網(wǎng)的路由，錯QUESTION Rfer to the exhibit. A ji network engineer has prepared the exhibited ofat file. W sements are true of the planned ofgrt erface fa0/1? (Choose The two ill qir The two ill qir NAT f on two oti .Address tltion fa0/1 is not rqifor DMZ vto acThe fa0/1 IP address

49、overlaps ith the space used by s0/0.The fa0/1 IP address is iv for the IP subnet on which it reernet hosts may not initiate connections to DMZ vthrough the ofgrtt is Answer: Section: Chapter 8: QUESTION Rfer to the exhibit. Two routers have just been f by a new n. are However, the routers are not sh

50、aring their routing tle W is the A. Split horizon is pvei Router2 fr vi routing ifr fo B. Router1 is configred for RIP 2, and Router2 is configred for RIP 水V割 保接收路由信息2錯誤配置，配置l使用了了的和之間的物理鏈路有題2錯誤使用了認證，沒有2錯 o Is n t is connected to the Is n t is connected to the root network mItisrunigRSTPhiletheelecte

51、d rootbridge isrunig802.1dpningIIsa higherMACntheelectedroot s a higher bridge n the elected root Answer: Section: Chapter 9: 考點考查原，RID小者優(yōu)先2由提示知根橋的QUESTION Rfer to the exhibit. the dicaring of an RSTP election s, which s layr itch port il SSitch3,portfa0/1 Sitch3,portfa0/12 Sitch4,portfa0/11 Sitch4,

52、portfa0/2 Sitch3, port Sitch3, port Answer: Section: Chapter 9: SW3跟橋，SW4會選一個端口作根端口，一個堵塞2在n個端口cost相的情況Q，選端口的跟端口，端口大的堵塞QUESTION Rfer to the exhibit. How many paths can the EIGRP routing HQ_Router to a igb s use to forward packets two ulcost paths two ulcost paths two ueual-cost paths three equal-cost

53、 paths three unequal-cost paths four equal-cost paths Answer: Section: Chapter 6: IP 考點考查EIGRP負載均衡2根據(jù)提示條QUESTION Select the t results fr xi ifiif)# itchprt port-ifiif)# itpr port-security mac-address A ml lernd MAC address is saved A ml lernd MAC address is AmallerndMAC addressishe startup-fiai file

54、. he running-fiai he VLAN he startup-cfii file if fm Sically fe MAC addresses are taddress are vE. ically configred MAC addresses are he running-fiE. ically configred MAC addresses are he running-fii file if frams taddress are vAnswer: Section: Chapter 9: 考點考查交換機端口安全關(guān)鍵_使靜態(tài)配置和動態(tài)學的mac方式優(yōu)CvlfQUESTION R

55、ferto the exhibit. The fllds are executed erfacefa0/1of chifiif)# icpr port-ifiif)# itpr port-security mac-address ifiif)# itp port-um The Ethernet ft is shown arrives erface fa0/1. W two functions will occur when this fmeisreceivedby 290Sitch? (Choose The MAC address tale ilnow have an aditioalentr

56、y o Only host A ill be allowed to tamifmon fa0/1.Thisfil bediscardedwhen it isreceivedbyh.Allfmesrivigon25Sitchidetitin of 0000.00aa.aaaa ill be forwarded out Hosts B and C may forward framsout fa0/1 but framsiv from other itcei not be forwarded out fa0/1.F. Only framsfrom source 0000.00bb.bbbb, the

57、 forwarded out fa0/1.lernd MAC addressF. Only framsfrom source 0000.00bb.bbbb, the forwarded out fa0/1.lernd MAC address of 9itch il Answer: Section: Chapter 9: 考點考查交換機端口安全A添到mac地址表，錯誤2是個arp文，把數(shù)據(jù)包源mac添到macB 25itch/F僅有源0.00b.bb，25i第一個學到的mac地址才有f0/1轉(zhuǎn)發(fā)2錯誤QUESTION Rfer to the exhibit. Some 2950 series i

58、tce are connected to the conference area of the headquartersnetwork. The itchespvie to to three jcsper conference room to host ltopconnectionsforemployeeswhovisit theheadquartersoffice.Whenlegroupsof employeescomefrmother lcti the network minia often ft hubshave been connected to wall jconference ar

59、ea although the ports on the ac s layr itce were ended to support mltion could the network miit take to prevent sby ml lthrough a inlitch port and still lv the witch functional for ended CnfigreicheiAC addressal to itherange of addresses used visitingmCnfigre an ACL to allow only a inl MAC address t

60、o connect to the sitch at one iUsethemac-address-table1globalofiuion dto liit each port to one source 考點考查交換機端口安全2題目想實限v一個端口只接入一備配置靜態(tài)地址表2錯誤2無法達到限v效果在所有端口使用限v一個端口允許一個地址，l確部署 和 命，錯誤，無法實在所有端口使用 限v一個端口允許一個，錯誤，一個Q面接多 考點考查和共時使用和時稱p路由 考點考查的過度機v2要有O種隧道站內(nèi)自動隧道尋址機 在 O能放最，是特殊情況，記 考點那種協(xié)議用于建立安全的程接_2，明文傳輸 線密術(shù) ，簡單