Question
While troubleshooting a VoIP handset connection, a technician's laptop is able to successfully connect to network resources using the same port. The technician needs to identify the port on the switch. Which of the following should the technician use to determine the switch and port?
- A. LLDP Correct
- B. IKE
- C. VLAN
- D. netstat
Explanation
LLDP (IEEE 802.1AB) is a vendor-neutral discovery protocol in which the switch advertises its system name and port details, so a laptop running an LLDP client on that wall jack can read exactly which switch and port it is connected to. IKE negotiates IPsec security associations, a VLAN is a broadcast domain rather than a discovery tool, and netstat shows the host's own connections and ports, not the upstream switch port.
