CompTIA Network+ N10-006 Q107

A network technician has detected a personal computer that has been physically connected to the corporate network. Which of the following commands would the network technician use to locate this unauthorized computer and determine the interface it is connected to?

A. nbtstat –a
B. show mac address-table
C. show interface status
D. show ip access-list
E. nslookup hostname

Correct Answer: B
Section: Troubleshooting

Explanation:
The show mac address-table command is used to view the ageing timer, and also the unicast and multicast MAC addresses stored in the MAC address table by the switch. Furthermore, you can view all of the addresses in the table or only the addresses learned or specified on a particular port or VLAN.