1. [单选题]帧中继(frame relay)环境下，为了区分虚电路，应该使用的地址是（）
A. IP地址
B. MAC地址
C. DLCI
D. IPX地址
2. [单选题]Given that you have a class B IP address network range, which of the subnet masks below will allow for 100 subnets with 500 usable host addresses per subnet?
A. 255.255.0.0
B. 255.255.224.0
C. 255.255.254.0
D. 255.255.255.0
E. 255.255.255.224
3. [单选题]查看路由表的命令是：()
A. show interface
B. show run
C. show ip route
D. show table
4. [多选题]When you compare the differences between half-duplex and full-duplex Ethernet, which of the following characteristics are exclusive to half-duplex? (Select two answer choices)
A. Half-duplex Ethernet operates in a shared collision domain.
B. Half-duplex Ethernet operates in an exclusive broadcast domain.
C. Half-duplex Ethernet has efficient throughput.
D. Half-duplex Ethernet has lower effective throughput.
E. Half-duplex Ethernet operates in an exclusive collision domain.
5. [单选题]为了连接“帧中继(frame relay)”线路，网络中的路由器需要提供的端口类型为（）
A. FastEthernet
B. Serial
C. BRI
D. Ethernet
6. [多选题]Which of the following steps are necessary in order to add a new VLAN to the Ezonexam switched network? (Select all that apply)
A. Create the VLAN.
B. Name the VLAN.
C. Configure an IP address for the VLAN.
D. Add the desired ports to the new VLAN.
E. Add the VLAN to the VTP domain.
7. [多选题]You are bringing up a new Ezonexam switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?
A. Switch(config) switchport trunk encapsulation isl
B. Switch(config) switchport trunk encapsulation ietf
C. Switch(config-if) switchport trunk encapsulation isl
D. Switch(config-if) switchport trunk encapsulation ietf
E. Switch(config-if) switchport trunk encapsulation dot1q
8. [单选题]路由器上“水平分割”的功能是：()
A. 分离端口
B. 阻止路由环路
C. 简化配置
D. 方便故障处理
9. [单选题]基本IP访问权限表的表号范围是：()
A. 1—100
B. 1-99
C. 100-199
D. 800-899
10. [单选题]标准访问控制列表应被放置的最佳位置是在（）。
A. 越靠近数据包的源越好
B. 越靠近数据包的目的地越好
C. 无论放在什么位置都行
D. 入接口方向的任何位置
