题目
A. Some quer y or reply packets are lost between the routers.
B. The neighboring router starts receiving route updates from this router.
C. A failure causes traffic on a link between two neighboring routers to flow in only one direction(unidirectional link).
D. Th e neighboring router stops receiving ACK packets from this router.
第5题
A.condition: @while
B.@while():condition
C.@WHILE(CONDITION: )
D.@while{condition}()
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