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In the actual working process, the state of the switch is easily disturbed by the outside world
For those users who have not yet connected to fixed broadband
In the data link layer, the host in the local area network is found by the MAC address.
We noticed the TIME_WAIT state, the connection is not terminated immediately after the client sends the last ACK segment
The reason why TCP needs 3 handshakes is because both sides of the TCP communication are full-duplex
Private 4G and 5G networks are already largely used
RTK technology has become more and more mature after years of accumulation
The role of the application layer is responsible for data communication between applications.
Home networking wants to achieve whole-house WiFi coverage
At present, the digital economy is entering a new stage of development.