多项选择题
A user opens a webpage that requires the transmission of packets from the Web server to the client's 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?（）
A. packet segmentation
B. serialized checking
C. packet sequencing
D. parallel checking
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单项选择题
Why is IPv6 packet processing more effective than IPv4 packet processing?（）
A. fixed header size
B. smaller header size
C. fewer header fields
D. variable header size -
单项选择题
Which layer in the TCP/IP model is responsible for delivering packets to their destination?（）
A. Application Layer
B. Transport Layer
C. Internet Layer
D. Network Access Layer -
单项选择题
Which layer in the OSI model is responsible for translating frames into bits?（）
A. Application Layer
B. Presentation Layer
C. Data Link Layer
D. Physical Layer
