kano computer review

reliable transmission service, this makes the router in the network can do relatively simple, and inexpensive;* * If the communication between processes in the host (that is, the end system) needs to be reliable, then the transport layer in the network host is responsible (including error handling, traffic control, etc.);(3) Comparison of virtual circuit service and datagram service:* * Virtual Circuit services:① idea: Reliable communication should be ensured by the network;Establishment of a ②

to accept the frame, we can be very close to 1 of the probability that these frames in the transmission process did not produce errors. The above mentioned can be approximated as: "There is no error in the frame accepted by the data link layer of the receiving end".⑥ We do not now require the data link layer to provide a "reliable transmission" service to the network layer;* * The so-called "reliable transmission": what is sent at the sending end of the data link layer and what is received at t