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When a router is connected to a Frame Relay WAN link...

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

Answer & Solution
Correct 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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