单项选择题
A. Application Layer B. Presentation Layer C. Data Link Layer D. Physical Layer
What are three characteristics of UDP?（）A. UDP is faste...
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
Which simplified IPv6 address is the same as the IP add...
单项选择题Which simplified IPv6 address is the same as the IP address 2001:0000:1000:0000:0000:cbff:0020:0001/64?（）
A. 2001::1::cbff:2:0001/64 B. 2001::1000::cbff:20:1/64 C. 2001:0:1000::cbff:20:1/64 D. 2001:0:1:0:0:cbff:2:1/64
What is a valid IPv6 address?（）A. 00:05:85:23:45:67B. 1...
单项选择题What is a valid IPv6 address?（）
A. 00:05:85:23:45:67 B. 127.0.0.1 C. 2001:0db8:3000:2215:0000:0000:aaaa:1111 D. 49.0001.0192.0168.1001.00
