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The following is Engineer A ‘s understanding of LVS load balancing technology, which one is wrong?

The following is Engineer A ‘s understanding of LVS load balancing technology, which one is wrong?
A . The advantage of LVS/DR is that the server can run any operating system that supports TCP/IP, it only needs an IP address to be configured on the scheduler, and the server group can use a private IP address
B . LVS/NAT is the easiest way. All RealServers only need to point their gateway to the Director, and the Director can also be a RealServer.
C . In LVS/DR mode, the scheduler dynamically selects a server according to the load of each server without modifying or encapsulating IP packets, but instead changes the MAC address of the data frame to the HAC address of the selected server
D . In LVS/DR mode, Director and RealServer must be physically connected by a network card through an uninterrupted LAN

Answer: D

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