题目内容
（请给出正确答案）
[主观题]
In the following essay, each blank has four choices. Choose the most suitable one from the
four choices and write down in the answer sheet.The key to SNMP(76)is its simplicity. It has a small command set that does a good job of collecting information from(77)any network device. In a SNMP environment,(78)of the work is handled by the network management system. Devices that are being managed are not(79)with processing(80)that might affect their performance.
A．popularity
B．function
C．efficiency
D．power
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