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1. [单选题]下列对RIP的配置中，合法的命令是（）
A. router rip 100 network 10.12.0.0
B. router rip 100 network 10.0.0.0
C. router rip network 10.12.0.0
D. router rip 100 network 10.0.0.0
2. [单选题]OSI第二层(the second layer)数据封装完成后的名称是：()
A. 比特
B. 包
C. 帧
D. 段
3. [多选题]In which Spanning-Tree states does a switch port learn MAC addresses? (Select two)
A. Blocking
B. Listening
C. Forwarding
D. Learning
E. Relaying
4. [单选题]While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?
A. The data link layer
B. The application layer
C. The access layer
D. The session layer
E. The network layer
5. [单选题]Ezonexam has implemented the use of the Virtual Trunking Protocol (VTP). Which statement below accurately describes a benefit of doing this?
A. VTP will allow physically redundant links while preventing switching loops
B. VTP will allow switches to share VLAN configuration information
C. VTP will allow a single port to carry information to more than one VLAN
D. VTP will allow for routing between VLANs
E. None of the above
6. [单选题]扩展IP访问权限表的表号范围是：()
A. 1—100
B. 1-99
C. 100-199
D. 800-899
7. [单选题]“ipaccess-group”命令在接口上缺省的应用方向是什么"（）。
A. in
B. 具体取决于接口应用哪个访问控制列表
C. out
D. 无缺省值
8. [单选题]查看E0端口配置信息的命令是：()
A. show access-list
B. show ip route
C. show version
D. show interfacee0
9. [单选题]Your network uses the172.12.0.0 class B address. You need to support 459 hosts per subnet, while accommodating the maximum number of subnets. Which mask would you use?
A. 255.255.0.0.
B. 255.255.128.0.
C. 255.255.224.0.
D. 255.255.254.0.
E. None of the above
10. [单选题]当配置一个CISCO的路由器时，缺省的DR和BDR优先级是（）。
B. 1
C. 16
D. 255
