题目内容（请给出正确答案）

[单选题]

WhichcodecausesonlyaLevel2adjacencytobeformedundertheSONETinterfaceso-2/2/2withFrameRelayencapsulation？（）

A.so-2/2/2{unit0{disablefamilyiso}}

B.isis{level1disable；interfaceso-2/2/2.0{disable}interfaceall；

C.so-2/2/2{unit0{disablelevel1；familyiso}}

D.isis{level1disable；interfaceall；}

提问人：网友koalaoo 发布时间：2022-01-07

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ABCD

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