單項(xiàng)選擇題

下列哪個(gè)命令可以實(shí)現(xiàn)將Ievel-2區(qū)域路由滲漏到Ievel-1區(qū)域()

A.import isis Ievel-2 into Ievel-1
B.import-route isis level-2 into level-1
C.adVertise isis Ievel-2 into lavel-1
D.export isis Ievel-2into level-1

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