1. [单选题]以下特殊区域中哪一个没有自动下发缺省路由（）
A. 末梢区域
B. 完全末梢区域
C. NSSA区域
D. 完全NSSA区域
2. [单选题]交换机转发数据到目的地(destination)依靠()
A. 路由表
B. MAC地址表
C. 访问权限表
D. 静态列表
3. [单选题]工作在OSI第三层(layer 3)的设备是：()
A. 网卡
B. 路由器
C. 交换机
D. 集线器
4. [多选题]在路由器上，可以使用的命令有：()
A. ping
B. show interfaces
C. show ip route
D. ipconfig
E. wincfg
5. [多选题]交换机的三大功能为（）
A. 地址学习
B. 转发过滤
C. 消除回路
D. 发送数据包
6. [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
7. [单选题]对路由器的描述，正确的是（）
A. 单广播域，单冲突域的设备
B. 单广播域，多冲突域的设备
C. 多广播域，单冲突域的设备
D. 多广播域，多冲突域的设备
8. [单选题]Which one of the following characteristics is true regarding the use of hubs and switches?
A. Hubs can have their ports be configured with VLANs
B. Using hubs is costly with regard to bandwidth availability.
C. Switches can not forward broadcasts.
D. Switches are more efficient than hubs in processing frames.
E. Switches increase the number of collision domains in the network.
9. [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
10. [多选题]You need to describe the various types of flow control to your co-workers. Which of the following are types of flow control that can be used in a network? (Choose three)
A. Congestion avoidance
B. Windowing
C. Cut-through
D. Buffering
E. Load Balacing
F. F. Fast Forward
