单项选择题
A.It is supplied by the CSU/DSU.
B.It is supplied by the far end router.
C.It is determined by the clock rate command.
D.It is supplied by the Layer 1 bit stream timing.
多项选择题 Refer to the diagram. Which three statements describe the router port configuration and the switch port configuration as shown in the topology? （）
多项选择题 Refer to the diagram. All hosts have connectivity with one another. Which statements describe the addressing scheme that is in use in the network?（）
多项选择题 The network administrator must complete the connection between the RTA of the XYZ Company and the service provider. To accomplish this task, which two devices could be installed at the customer site to provide a connection through the local loop to the central office of the provider (Choose two.)（）。