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多項選擇題 The switches shown in the diagram, Core and Core2, are both Catalyst 2950s. The addressing scheme for each company site is as follows:Router Ethernet port - 1st usable addressCore - 2nd usable addressCore2 - 3rd usable addressFor this network, which of the following commands must be configured on Core2 to allow it to be managed remotely from any subnet on the network? （）

A.Core2(config)# interface f0/0 Core2(config-if)# ip address 192.168.1.10 255.255.255.248
B.Core2(config)# interface vlan 1 Core2(config-if)# ip address 192.168.1.11 255.255.255.248
C.Core2(config)# line con 0 Core2(config-line)# password cisco
D.Core2(config)# line vty 0 4 Core2(config-line)# password cisco
E.Core2(config)# ip default-gateway 192.168.1.9
F.Core2(config)# ip route 0.0.0.0 0.0.0.0 192.168.1.8

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1.單項選擇題Which type of EIGRP route entry describes a fesible successor？（）

A.a primary route，stored in the routing table
B.a backup route，stored in the routingt able
C.a backup route，stored in the topology table
D.A primary route，stored in the topology table

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2.單項選擇題無類路由協(xié)議路由表表目為三維組，其中不包括（）。

A.子網(wǎng)掩碼
B.源網(wǎng)絡(luò)地址
C.目的網(wǎng)絡(luò)地址
D.下一跳地址

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3.單項選擇題VLAN tag在OSI參考模型的哪一層？（）

A.應(yīng)用層
B.表示層
C.會話層
D.傳輸層
E.網(wǎng)絡(luò)層
F.鏈路層
G.物理層

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4.判斷題RIP協(xié)議引入路由保持機(jī)制的作用是防止路由形成環(huán)路。

參考答案：正確

5.單項選擇題While troubleshooting a network connectivity problem, a technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However, when the ping command is issued from the workstation, the output message "Request timed out." is displayed. At which layer of the OSI model does the problem most likely exist（）。

A.the session layer
B.the protocol layer
C.the data link layer
D.the access layer
E.the network layer
F.the application layer

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