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单项选择题 Refer to the exhibit. Which statement is true regarding the topology?（）

A、An IPSec tunnel cannot be established between Router A and Router B

B、The Linksys Firewall router does not support PPPoE

C、Destination addresses defined in RFC 1918 are not supported within an IPSec tunnel

D、The phone and PC behind Router A will not be able to connect to a host on 192.168.1.0/24

  • D

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