Change Cable on Interface ge-2/1/3

C

The interface name "ge-2/1/3" indicates that the interface is a Gigabit Ethernet (ge) interface, located on FPC (Flexible PIC Concentrator) 2, slot 1, and port 3. Therefore, option C is the correct answer.

Each FPC contains multiple slots, and each slot has multiple ports. In this case, we are looking for the cable on FPC 2, slot 1, and port 3. The first digit in the interface name (2 in this case) corresponds to the FPC number, the second digit (1) corresponds to the slot number, and the third digit (3) corresponds to the port number.

Option A is incorrect because it specifies slot 3 instead of slot 1. Option B is incorrect because it specifies FPC 3 instead of FPC 2. Option D is incorrect because it specifies slot 2 instead of slot 1.

To change the cable on interface ge-2/1/3, one would physically locate the FPC, slot, and port corresponding to the interface and replace the cable connected to that port.