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單項(xiàng)選擇題

Which of the following regulates the amount of network traffic a single node receives in a servercluster?（）

A. Load balancer
B. Proxy server
C. Content filter
D. Quality of service

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單項(xiàng)選擇題

A standard installation for wireless will use which of the following antenna types?（）

A.Sector
B.Patch
C.Yagi
D.Omni-Directional

單項(xiàng)選擇題

Which of the following protocols requests membership to a multicast group?（）

A.IGMP
B.SNMP
C.SMTP
D.ICMP

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