| Exam 300-115 | Question id=1352 | Layer 2 Technologies | 
        In a Cisco switch, what is the default period of time after which a MAC address ages out and is discarded?
      
| A. | 100 seconds | |
| B. | 180 seconds | |
| C. | 300 seconds | |
| D. | 600 seconds | 
To configure the aging time for all MAC addresses, perform this task:
          