思科網(wǎng)絡(luò)設(shè)備的互連第二部分(ICND2)復(fù)習(xí)題（第七單元）-

1、1. Which of the following is used to describe a set of networks subject to translationusing NAT? Static NAT Dynamic NAT Inside network Inside global IP address1. 以下哪項(xiàng)是用來描述一組受制于轉(zhuǎn)換,并使用NAT的網(wǎng)絡(luò)?靜態(tài)NAT動(dòng)態(tài)NAT 內(nèi)部網(wǎng)絡(luò)內(nèi)部全球IP地址2. Which Cisco IOS command would you use to define a pool of global addresses to bealloc

2、ated as needed? ip nat pool ip nat inside pool ip nat outside pool ip nat inside source static2. 使用以下哪條Cisco IOS指令來定義一池按需分配的全球地址? ip nat poolip nat inside poolip nat outside poolip nat inside source static3. What does the ip nat inside source static command configure? selects the insidestatic interf

3、ace marks the interface as connected to the outside creates a pool of global addresses to be allocated as needed establishes permanent translationbetween an inside local address and an inside global address3.在源靜態(tài)指令內(nèi)的ip nat配置的是什么?選擇內(nèi)部靜態(tài)接口標(biāo)記接口為外部鏈接創(chuàng)建一池按需分配的全局地址 在內(nèi)部本地地址和內(nèi)部全局地址間建立永久轉(zhuǎn)換4. Which of the fol

4、lowing commands used for NAT overloading marks an interface as0.0.0.255 ip nat inside source list 1 pool nat-pool overload ip nat pool nat-pool192.1.1.17 192.1.1.20 netmask 255.255.255.2404.以下哪條NAT過載使用的指令標(biāo)記一個(gè)接口為內(nèi)部鏈接? ip nat insideip nat outsideip nat inside source list 1 pool nat-pool overload5. Whi

5、ch command clears a specific extended dynamic translation entry from the NATtranslation table? clear ip nat translation * clear ip nat translation inside clear ip nat translation outside =clear ip nat translation protocol inside5.哪條指令從NAT轉(zhuǎn)換表中清除一個(gè)特定的擴(kuò)展動(dòng)態(tài)轉(zhuǎn)換入口?clear ip nat translation *clear ip nat tra

6、nslation insideclear ip nat translation outside =clear ip nat translation protocol inside6. The output of which command displays the active translations for a NAT translationtable? show ip nat statistics show ip nat translations clear ip nat translation * clear ip nat translation outside6. 哪條指令的輸出結(jié)果

7、顯示了一個(gè)NAT轉(zhuǎn)換表的有效轉(zhuǎn)換?show ip nat statistics show ip nat translationsclear ip nat translation *clear ip nat translation outside7. You are troubleshooting a NAT connectivity problem on a Cisco router. Youdetermine that the appropriate translation is not installed in the translation table.Which three actio

8、ns should you take? (Choose three. Determine if there areenough addresses in the NAT pool. Run debug ip nat detailed to determine thesource of the problem. Use the show ip route command to verify that the selected route exists. Verify that the router interfaces are appropriately defined as NAT insid

9、e or NAT outside. Verify that the ACL referenced by the NAT command is permitting all necessary inside local IPv4 addresses.7. 你正在一臺(tái)思科路由器上對(duì)一個(gè)NAT連接性問題進(jìn)行差錯(cuò)排除,你要確定最合適的轉(zhuǎn)換并沒有放置在轉(zhuǎn)換表內(nèi),那么你應(yīng)該做的三個(gè)步驟是? 確定NAT池是否有足夠的地址運(yùn)行debug ip nat detailed來確定問題的源頭使用show ip route指令來核實(shí)選擇的路徑是否存在 核實(shí)路由器接口已經(jīng)正確定義為NAT內(nèi)部或NAT外部 核實(shí)NAT指令涉

10、及的ACL允許所有必要的內(nèi)部本地IPv4地址8. The output of which command provides information about certain errors orexceptional conditions, such as the failure to allocate a global address? debug ip nat debug ip nat detailed show ip nat statistics show ip nat translations8.以下哪條指令提供了某個(gè)錯(cuò)誤或例外情況的信息,例如全局地址分配失敗?debug ip nat

11、 debug ip nat detailedshow ip nat statisticsshow ip nat translations9. Which of the following is NOT an advantage of IPv6 compared to IPv4? largeraddress space shorter header simpler header support for IPsec on every link9.以下哪條不是IPv6相對(duì)于IPv4的優(yōu)勢?更大的地址空間 更短的header更簡單的header在每個(gè)鏈路上都支持IPsec10. W hy is NAT

12、 not a requirement for IPv6? NAT is not available with IPv6. IPv6addresses do not have a private address space. IPv6 allows all users in anenterprise to have a global address. Hexadecimal addresses cannot betranslated.10. 為什么IPv6不需要NAT?IPv6不能獲得NATIPv6地址沒有專用地址空間 IPv6允許所有在一個(gè)企業(yè)內(nèi)的用戶擁有全局地址無法轉(zhuǎn)換十六進(jìn)制的地址11.

13、H ow does IPv6 enable smaller routing tables in Internet routers? definedaggregation points in the address space a new routing protocol autoconfiguration site local address11. IPv6如何在因特網(wǎng)路由器上啟用更小的路由選擇表? 在地址空間內(nèi)有已定義的聚集點(diǎn)使用一個(gè)新的路由選擇協(xié)議自動(dòng)配置站點(diǎn)的本地地址12. H ow can you condense consecutive chunks of zeros in an I

14、Pv6 address? with the":" symbol =by eliminating leading zeros by replacing each four consecutive zeros with a single zero =with the ":" symbol12. 如何壓縮IPv6地址中連續(xù)的一串0?使用":" 符號(hào)去掉最前面的0使用一個(gè)0代替每四個(gè)連0 使用":"符號(hào)13. W hich type of IPv6 address is a global unicast address a

15、ssigned to more than oneinterface? anycast unicast multicast broadcast13.哪種IPv6地址是一個(gè)分配給超過一個(gè)接口的全局單播地址? 選播單播組播廣播14. W hich address type from IPv4 was eliminated inIPv6? unicast multicast broadcast everycast14. IPv6中去除掉了IPv4中的哪種地址類型?單播組播 廣播everycast15. W hich statement is true about the EUI-64 address

16、format of the system ID forstateless autoconfiguration used by Cisco? It is the MAC address plus theSite-Level Aggregator. It is the MAC address plus the ISO OUI. It expands the 48-bitMAC address to 64 bits by inserting FFFE into the middle 16 bits. It does not follow IEEE standards for uniqueness o

17、f the address. It is only used by Cisco.15.對(duì)于思科所使用的無狀態(tài)自動(dòng)配置系統(tǒng)ID的EUI-64地址格式,哪項(xiàng)描述是正確的?它是MAC地址加上Site-Level Aggregator它是MAC地址加上ISO OUI 它通過將FFFE插入中間的16比特,把48比特MAC地址擴(kuò)充為64比特它不符合IEEE標(biāo)準(zhǔn)下的地址唯一性它僅僅被思科所使用16. W hat is it called when an IPv6 router is involved in providing an IPv6 address to arequesting host? auto

18、addressing link local IPv6 NAT standard statelessautoconfiguration DHCP autoconfiguration16.當(dāng)IPv6路由器向要求的主機(jī)提供IPv6地址時(shí),以下哪項(xiàng)將被呼叫?自動(dòng)尋址link localIPv6 NAT 標(biāo)準(zhǔn)無狀態(tài)自動(dòng)配置DHCP自動(dòng)配置17. W hich two of the following are NOT IPv6 routing protocols? (Choosetwo. IGRP6 OSPFv3 EIGRP for IPv6 RIPng ODR MP-BGP417.以下哪兩個(gè)不是IPv6路由選擇協(xié)議? IGRP6OSPFv3EIGRP for IPv6RIPng ODRMP-BGP418. W hat are the two most common IPv4-to-IPv6 transition techniques? (Choosetwo. IPv6 NAT dual stack 6to4 tunnels IPv6 mobile18.哪兩個(gè)是最常見的IPv4-to-IPv6轉(zhuǎn)換技術(shù)?IPv6 NAT dual stack 6to4 tunnelsIPv6 mobile19. W hich command is the global command that enabl