皮皮学，免费搜题
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【单选题】
在某园区网中，路由器R1的CE0/1（212．112．8．5/30）与路由器R2的CEO/1（212．112．8．6/30相连，R2的GE0/2（212．112．8．9/30）与R3的GEO/1（212．112．8．10/30）相连，R3的GEO/2（212．112．8．13/30）直接与Internet上的路由器相连，路由器R1缺省路由的正确配置是（ ）。A.
ip route 0．0．0．0 0．0．0．0 212．112．8．6
B.
ip route 0．0．0．0 0．0．0．0 212．112．8．9
C.
ip route 0．0．0．0 0．0．0．0 212．112．8．10
D.
ip route 0．0．0．0 0．0．0．0 212．112．8．13
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举一反三
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A.
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