Which protocol is used to retrieve data stored in a Management Information Base (MIB)?

Which protocol is used to retrieve data stored in a Management Information Base (MIB)?

• A. SNMPv3
• B. DSCP
• C. TLV
• D. CDP

Answer: (A)

Retrieving data from a MIB is done with SNMP, the protocol designed for asking devices about their management information. The MIB is a structured set of objects with unique identifiers (OIDs) that describe attributes of a device. An SNMP manager queries these objects using operations like GET and GET-NEXT to read values, or SET to modify them (if allowed). SNMPv3 specifically adds strong security features—authentication, privacy, and access control—making it the preferred choice for securely obtaining MIB data in modern networks. The other options don’t fit this purpose: DSCP marks packets for QoS, TLV is a flexible encoding mechanism used in various protocols, and CDP is a neighbor discovery protocol.

Retrieving data from a MIB is done with SNMP, the protocol designed for asking devices about their management information. The MIB is a structured set of objects with unique identifiers (OIDs) that describe attributes of a device. An SNMP manager queries these objects using operations like GET and GET-NEXT to read values, or SET to modify them (if allowed). SNMPv3 specifically adds strong security features—authentication, privacy, and access control—making it the preferred choice for securely obtaining MIB data in modern networks. The other options don’t fit this purpose: DSCP marks packets for QoS, TLV is a flexible encoding mechanism used in various protocols, and CDP is a neighbor discovery protocol.