Which of the three services provided by the data link layer to the network layer has the lowest quality of service and can be used to transmit information with high real-time requirements in occasions with low line bit error rate?
A、Connectivity-orientedservicewithconfirmation;
B、Connectivity-freeservicewithoutconfirmation;
C、ConfirmedConnectionlessService;
D、ConfirmedConnectionlessService
发布时间：2024-09-19 22:17:53
