A.240 B.224 C.248 D.250
A.access-list 2 deny 192.168.0.00.0.0.255 B.access-list 100 deny 192.168.0.00.0.0.255 C.access-list 101 deny 192.168.0.00.0.0.255 D.access-list 102 deny 192.168.0.00.0.0.255
A.數(shù)據(jù)幀 B.數(shù)據(jù)包 C.bit D.數(shù)據(jù)段