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

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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

多项选择题

What are three characteristics of UDP?（）

A. UDP is faster than TCP
B. UDP operates at the Transport Layer
C. UDP is connection-oriented
D. UDP data is sent best-effort
E. UDP is more reliable than TCP