单选题Which statement is true about logical units?（）ALogical units are similar to VLANs used by other vendors.BA logical unit is required for transit interfaces.CFrame Relay encapsulation supports one logical unit.DLink speed and duplex are configured in the logical unit properties.
单选题
Which statement is true about logical units?（）
A
Logical units are similar to VLANs used by other vendors.
B
A logical unit is required for transit interfaces.
C
Frame Relay encapsulation supports one logical unit.
D
Link speed and duplex are configured in the logical unit properties.
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