OID

Which of the following is an object held within an MIB?

A.

OUI

B.

OTDR

C.

OID

D.

SNMP host

E.

SNMP agent

F.

SNMP trap.

C.

MIB stands for Management Information Base, which is a database used by network management systems (NMS) to store information about the devices on a network. The MIB stores this information in the form of objects, which are identified by unique object identifiers (OIDs). These objects contain information about various aspects of network devices, such as their configuration settings, performance statistics, and operational status.

The answer to the question is C. OID, which stands for Object Identifier. An OID is a unique identifier used to identify a specific object within the MIB. OIDs are arranged in a hierarchical structure, with each level of the hierarchy representing a different organization, device, or feature.

Option A, OUI (Organizationally Unique Identifier), is a unique identifier assigned by the Institute of Electrical and Electronics Engineers (IEEE) to identify the manufacturer of a network interface card (NIC). Option B, OTDR (Optical Time Domain Reflectometer), is a device used to test the quality of fiber optic cables. Option D, SNMP host, is a device that is managed by an SNMP (Simple Network Management Protocol) system. Option E, SNMP agent, is software that runs on a managed device and communicates with an SNMP system. Option F, SNMP trap, is a message sent by a managed device to an SNMP system to alert it of an event or error. None of these options are objects held within an MIB.