67. Tracert is a useful command to display a possible route from source to destination. This command is implemented through which one of the following protocols?
(A) IGMP
(B) ICMP
(C) SIP
(D) LACP
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統計: A(4), B(29), C(4), D(6), E(0) #2927229
統計: A(4), B(29), C(4), D(6), E(0) #2927229