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單項選擇題X．25協(xié)議是哪兩種設備進行交互的規(guī)程？（）

A.PSE、PSN
B.DCE、DTE
C.DCE、PSE
D.DTE、PSE

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1.單項選擇題A host on the LAN is accessing an FTP server across the Internet. Which of the following addresses could appear as a source address for the packets forwarded by the router to the destination server（）。

A.10.10.0.1
B.10.10.0.2
C.199.99.9.33
D.199.99.9.57
E.200.2.2.17
F.200.2.2.18

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2.單項選擇題 Refer to the exhibit. What command sequence will enable PAT from the inside to outside network?（）

A.(config) ip nat pool isp-net 1.2.4.2 netmask 255.255.255.0 overload
B.(config-if) ip nat outside overload
C.(config) ip nat inside source list 1 interface ethernet1 overload
D.(config-if) ip nat inside overload

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3.單項選擇題在配置華為路由器和思科路由器搭建的幀中繼網絡時，你應該怎樣配置華為路由器的鏈路封裝格式？（假定思科采用默認封裝格式）（）

A.arpa
B.ansi
C.ietf
D.nonstandard
E.Q.933a
F.Cisco

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4.單項選擇題為了查看Quidway路由器搭建的幀中繼網絡的封裝類型，應啟用什么命令？（）

A.display fr map-info（顯示映射表）
B.display fr pvc-info（PVC統(tǒng)計信息）
C.display fr lmi-info
D.display interface

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5.單項選擇題 Refer to the exhibit. What does the (*) represent in the output?（）

A.Packet is destined for a local interface to the router.
B.Packet was translated, but no response was received from the distant device.
C.Packet was not translated, because no additional ports are available.
D.Packet was translated and fast switched to the destination.

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