單項(xiàng)選擇題

In which of the following layers of the OSI model does the TCP protocol operate?（）

A.Session
B.Network
C.Data link
D.Transport

你可能感興趣的試題

單項(xiàng)選擇題

Which of the following ports does POP3 services use, by default?（）

A.25
B.110
C.143
D.443

單項(xiàng)選擇題

A user took a laptop on vacation and made changes to the configuration in order to use the device at the hotel. The user can reach the Internet, but cannot access any internal network resources.
Which of the following is the MOST likely reason?（）

A. Incorrect DNS
B. Incorrect subnet mask
C. Duplicate IP address
D. Incorrect SSID