单选题A network technician is concerned about the environmental effects of power consumption and heat from network resources Limited space is also a concern. Which of the following technologies should be implemented?（）ACircuit switchingBNetwork address translationCPower over EthernetDVirtual servers
单选题
A network technician is concerned about the environmental effects of power consumption and heat from network resources Limited space is also a concern. Which of the following technologies should be implemented?（）
A
Circuit switching
B
Network address translation
C
Power over Ethernet
D
Virtual servers
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