多项选择题
A. The receiver acknowledges the final packet in each communications stream.
B. The receiver adds sequencing numbers to the packets received.
C. The sender adds sequencing numbers to the packets it sends.
D. The receiver acknowledges each packet it receives from the sending device.
多项选择题 A user opens a webpage that requires the transmission of packets from the Web server to the clients browser. The packets transmitted from the Web server to the client exceed the smallest MTU value on the communications path. Which two protocol functions allow this type of communication?（）
单项选择题 Why is IPv6 packet processing more effective than IPv4 packet processing?（）
单项选择题 Which layer in the TCP/IP model is responsible for delivering packets to their destination?（）