Free CompTIA Network+ N10-008 Practice Question

An Object Identifier (OID) is a string that uniquely identifies a managed object in an MIB. SNMP managers use OIDs to refer to device attributes and operations on the network. Although other options like 'Trap' and 'Log' are related to SNMP or network device management, they do not serve the same purpose as OIDs. 'Trap' refers to notifications sent from a device, 'Log' is a record of events, and 'Sensor' is a hardware device or a software routine that collects and outputs data, rather than a unique string identifier used in SNMP.