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 switchingB Network address tra

A.NAT

B.Subnetting

C.DHCP

D.DNS

Astute service providers realize that the continued support of legacy X.25 and asynchronous network elements using separate operations networks is cost(71). For example, the maintenance of multiple networks can require additional staff. Often, this staff must be trained on multiple vendor technologies, sometimes requiring parallel groups specializing in each(72)Hence, additional maintenance procedures must be maintained and administrative records are(73). The duplication of transport facilities to carry(74)network traffic is an inefficient use of resources. And, not surprisingly, more technologies installed in a central office mean the necessity for more physical space, and an increase in power connections and power consumption. Migration of these(75)network elements to IP-based DCNs is a logical strategy.

A．prohibitive

B．feasible

C．connective

D．special

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

An administrator is setting up a network and would like to prevent users from having the ability toplug their PC into the network to receive an IP address.Which of the following addressing schemes should the technician use?（）

A.NAT

B.Dynamic

C.Subnetting

D.Static

A. Remove network connections

B. Remove the RAM

C. Self ground on the computer case

D. Disconnect power to PC