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多项选择题Which two subnetworks would be included in the summarized address of 172.31.80.0 /20? （）

A、172.31.17.4/30

B、172.31.51.16/30

C、172.31.64.0/18

D、172.31.80.0/22

E、172.31.92.0/22

F、172.31.192.0/18

  • D,E

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