Into which two types of areas would an area border router (ABR) inject a default route?（）
- A、stub
- B、the autonomous system of an exte rior gateway protocol (EGP)
- C、NSSA
- D、totally stubby
- E、the autonomous system of a different interior gateway protocol (IGP)
- F、area 0
正确答案:A,D
答案解析:有
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