单项选择题
A. The address is a Class A address.
B. The address is a Class B address.
C. The address is a Class C address.
D. The address is a Class D address.
单项选择题 Which of the following cable speeds would provide the GREATEST theoretical bandwidth?（）
多项选择题 Which of the following network topologies BEST describes a VPN? （）(Select TWO)
单项选择题 A technician who separated two departments using VLANs now discovers that the VLANs cannot communicate with each other. Which of the following does the technician need to enable communication between the VLANs?（）