单项选择题

At which of the following layers does the TCP protocol operate?（）

A.Layer 1
B.Layer 4
C.Layer 6
D.Layer 7

点击查看答案

上一题目录下一题

相关考题

单项选择题

A user on a network cannot access any network resources. The link light on the computer showsthat a connection is present. Which of the following is the MOST likely cause of the problem?（）

A. The wrong cable type has been used.
.B. IDS has shut down the computer's switch port.
C. The port on the switch is configured incorrectly
D. Spanning tree protocol was implemented.

单项选择题

A company wants to secure access to its internal wireless network. The company wants to use themost secure means to access the network. Which of the following is the BEST choice for wireless security in this situation?（）

A. WEP encryption
B. Channel rotation
C. Disable SSID
D. WPA encryption

单项选择题

Which of the following WAN technologies modulates 24 channels into a 1 5Mbps signal?（）

A.ISDN
B.PSTN
C.OC-2
D.T1