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Refer to the exhibit. The newly installed WAN link on interface Serial0/1 on Router R1 is not functioning properly. The network administrator located on PC1 which is far away from the router R1 needs to troubleshoot the issue. The administrator needs to determine the cable type that has been connected to the S0/1 interface. What is the most efficient way to verify the cable type connected to s0/1?

Examine the cable between DTE and DCE.

Telnet into router "R1" and execute the command "show controllers s0/1".

Telnet into router "R1" and execute the command "show running-config".

Connect through console port and execute the command "show running-config".

Telnet into router "R1" and execute the command "show interfaces s0/1".

Explanation

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