Which of the following is the abbreviation of the ICMP protocol?
Answer(s): D
Which of the following protocols gives users a way to log in to a remote server over the network?
Answer(s): A
The protocol of the link layer encapsulation on the point-to-point connection line mainly includes PPP and HDLC.However, the HDLC protocol only supports the synchronous mode, and the PPP protocol supports both the synchronous and asynchronous transmission modes.
The firewall must log the traffic logs that pass, but there can be no records for the rejected traffic.
Answer(s): B
Which layer is responsible for converting unreliable transmission channels into reliable transmission channels, transmitting data frames with parity, and using error control and frame sequential control functions?
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