A.可以
B.不可以
第1题
A. Each device on the Ethernet segment stops transmitting for a short time.
B. A jam signal informs all devices that a collision occurred.
C. When data transmission resumes, the devices that were involved in the collision have priority to transmit.
D. The devices that are involved in the collision stops transmitting for a short time.
E. The collision invokes a random back-off algorithm.
第2题
A.90milliseconds
B.120milliseconds
C.150milliseconds
D.240milliseconds
第4题
A.Mis-routedpackets
B.Excessjitter
C.Delayofcriticaltraffic
D.Packetlossduetocongestion
E.Datalinklayerbroadcaststorms
F.FTPconnectionsunsuccessful
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