Networking - Wide Area Networks - Discussion

Discussion :: Wide Area Networks - Wide Area Networks (Q.No.14)


When a router is connected to a Frame Relay WAN link using a serial DTE interface, how is the clock rate determined?

[A]. Supplied by the CSU/DSU
[B]. By the far end router
[C]. By the clock rate command
[D]. By the Physical layer bit stream timing

Answer: Option A


Clocking on a serial interface is always provided by the CSU/DSU (DCE device). However, if you do not have a CSU/DSU in your nonproduction test environment, then you need to supply clocking with the clock rate command on the serial interface of the router with the DCE cable attached.

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