Final answer:
The default maximum time for a switch to retain LLDP information is 120 seconds. LLDP is used for network management and operates by refreshing data as it receives frames from its neighbors. The correct option is C.
Step-by-step explanation:
The default maximum amount of time the switch will retain LLDP (Link Layer Discovery Protocol) information before discarding is 120 seconds, which is equivalent to 2 minutes. LLDP is a network protocol used by devices to advertise their identity, capabilities, and neighbors on a local area network.
The default maximum amount of time that a switch will retain LLDP (Link Layer Discovery Protocol) information before discarding it is 120 seconds. LLDP is a protocol used by network devices for advertising their identities, capabilities, and neighbors on an IEEE 802 local area network, principally for the purpose of network management.
LLDP information is held in a device's MIB (Management Information Base), and the information is refreshed each time an LLDP frame is received from a neighbor. If the LLDP information is not refreshed within the aging time, which is the 120-second default, the information is discarded as it may no longer be relevant or accurate.