1. [单选题]The 201.145.32.0 network is subnetted using a /26 mask. How many networks and IP hosts per network exists using this subnet mask?
A. 4 networks and 64 hosts
B. 64 networks and 4 hosts
C. 4 networks and 62 hosts
D. 62 networks and 2 hosts
E. 6 network and 30 hosts
2. [单选题]为了连接“帧中继”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
