Which term best matches the following definition: Structure defining management information in SNMP.

• A. Management Information Base (MIB)
• B. Object Identifier (OID)
• C. Domain Definition Table (DDT)
• D. Access Control Matrix

Answer: (C)

In SNMP, the term that defines what management information is available and how it’s organized is the Management Information Base. The MIB is a formal schema that describes the set of objects that can be managed on a device, including each object's name, data type, access permissions, and a description. It creates a hierarchical structure (a tree) of management objects, so managers know what data can be retrieved or modified and how to interpret it.

Each object within the MIB is identified by an Object Identifier, which is the numeric path to that specific object within the MIB tree. So the MIB provides the overall structure and definitions, while an OID points to a particular object defined within that structure.

The other terms listed aren’t the standard way to describe this concept in SNMP. A Domain Definition Table isn’t a recognized SNMP term, and an Access Control Matrix is a general security concept not specific to SNMP’s management information definitions.

For example, a MIB module might define objects related to network interfaces, such as interface description, status, and counters. These definitions tell SNMP managers what data exists, what type it is (string, integer, counter, etc.), and how to interpret it, enabling reliable monitoring and management.