フリー問題

問題文

An administrator must decide which transport a small status probe should use on a FreeBSD host. Which description of the two common transports is correct?

選択肢

1. A transport that keeps state for each session numbers every byte so that a loss can be retransmitted while a datagram transport leaves that responsibility to the application and offers only a connection that covers the payload.
2. A transport that keeps state for each session numbers every byte so that a loss can be reordered while a datagram transport leaves that responsibility to the application and offers only a connection that covers the payload.
3. A transport that keeps state for each session numbers every byte so that a loss can be retransmitted while a datagram transport leaves that responsibility to the application and offers only a checksum that covers the payload.
4. A transport that keeps state for each session numbers every byte so that a loss can be reordered while a datagram transport leaves that responsibility to the application and offers only a checksum that covers the payload.