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多項(xiàng)選擇題What can a network administrator utilize by using PPP Layer 2 encapsulation (Choose three.) （）。

A.VLAN support
B.compression
C.authentication
D.sliding windows
E.multilink support
F.quality of service

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1.單項(xiàng)選擇題 網(wǎng)絡(luò)管理員在交換機(jī)1上創(chuàng)建一個(gè)新VLAN并且將主機(jī)C和主機(jī)D加入到此VLAN中。管理員配置交換機(jī)接口FastEthernet0/13到FastEthernet0/24成為新VLAN成員.但是網(wǎng)絡(luò)管理員完成配置以后，主機(jī)A可以和主機(jī)B通信，但是主機(jī)A不能和主機(jī)C或者主機(jī)D通信。哪個(gè)命令可以用來(lái)解決這個(gè)問(wèn)題？（）

A.
B.
C.
D.

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2.單項(xiàng)選擇題What is the effect of using the service password-encryption command?（）

A.Only passwords configured after the command has been entered will beencrypted.
B.Only the enable password will be encrypted.
C.Only the enable secret password will beencrypted
D.It will encrypt the secret password and remove the enable secret password from the configuration.
E.It will encrypt all current and future passwords.

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3.多項(xiàng)選擇題Which two are advantages of static routing when compared to dynamic routing？（）

A.Security increases because only the network administrator may change the routing tables.
B.Configuration complexity decreases as network size increases.
C.Routing updates are automatically sent to neighbors.
D.Route summarization is compued automatically by the router.
E.Routing traffic load is reduced when used in stub network links.
F.An efficient algorithm is used to build routing tables，using automatic updates.
G.Routing tables adapt automatically to topology changes.

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4.多項(xiàng)選擇題以下兩個(gè)選項(xiàng)是工作在OSI模型的應(yīng)用層的？（）

A.ping
B.Telnet
C.FTP
D.TCP
E.IP

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5.單項(xiàng)選擇題A router has two FastEthernet interfaces and needs to connect to four vlans in the local network.How can you accomplish this task，using the fewest physical interfaces and without decreasing networkper formance？（）

A.Add two more FastEthernet interfaces.
B.Add a second router to handle the vlan traffic.
C.Use a hub to connect the four vlans with a FastEthernet interface on router.
D.Implement a router-on-a-stick configuration.

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