某局域网采用SNMP进行网络管理，所有被管设备在15分钟内轮询一次，网络没有明显拥塞，单个轮询时间为0.4s，则该管理站最多可支持（）个设备。
A．18000
B．3600
C．2250
D．90000
参考答案：C
解析：
管理站支持的设备数N与轮询间隔T、单个轮询需要的时间Δ之间的关系为
。
本题中，T=15x60，Δ=0.4，可得：N≤2250，因此管理站最多可支持的设备个数为2250。
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