单选题 The Simple Network Management Protocol (SNMP)is an (66) protocol that facilitates the exchange of management information between (67) . It is part of the Transmission Control Protocol/Internet Protocol(TCP/IP) protocol suite. SNMP enables network (68) to manage network performance, find and sole network problems, and plan for (69) An SNMP -managed network consists of three key components: managed devices , (70) ,and network -management systems .

A、 Physical Layer
B、 Link Layer
C、 Network Layer
D、 Transport Layer

【正确答案】 D

【答案解析】[解析] Transport Layer：传输层

A、 network stations
B、 network clients
C、 network devices
D、 network servers

【正确答案】 C

【答案解析】[解析] network devices：网络设备

A、 servers
B、 administrators
C、 computers
D、 routers

【正确答案】 B

【答案解析】[解析] administrators：管理员

A、 network growth
B、 network structure
C、 network architecture
D、 network servers

【正确答案】 A

【答案解析】[解析] network growth：网络增长

A、 administrators
B、 agents
C、 managers
D、 servers

【正确答案】 B

【答案解析】[解析] agents：代理