- A. Ensure that the serial cable is correctly plugged in to the interfaces.
- B. Apply the clock rate 56000 configuration command to the serial0/1 interface of R1.
- C. Configure the serial0/1 interfaces on R1 and R2 with the no shutdown command.
- D. Change the address of the serial0/1 interface of R1 to 22.214.171.124.
- E. Change the subnet masks of both interfaces to 255.255.255.240.
Answer: Option A.
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