Which SNMP operation retrieves the next data item in a table?

Which SNMP operation retrieves the next data item in a table?

• A. GetRequest
• B. SetRequest
• C. GetNextRequest
• D. GetResponse

Answer: (C)

The concept being tested is how to walk through a table in SNMP to retrieve successive data items. To fetch the next entry in a table, you use the operation that requests the next OID after the one you’ve seen. The agent replies with that next OID and its value, allowing you to continue by issuing another request for the next item. This chaining is what enables walking a table step by step. Getting a specific OID’s value requires a GetRequest, which asks for exactly one known OID. Setting a value uses SetRequest, which writes data to a device. GetResponse is the reply message to any request, not the method used to move to the next item. (Note: GetBulkRequest can fetch many items at once for efficiency, but the operation that specifically retrieves the next data item is GetNextRequest.)

The concept being tested is how to walk through a table in SNMP to retrieve successive data items. To fetch the next entry in a table, you use the operation that requests the next OID after the one you’ve seen. The agent replies with that next OID and its value, allowing you to continue by issuing another request for the next item. This chaining is what enables walking a table step by step.

Getting a specific OID’s value requires a GetRequest, which asks for exactly one known OID. Setting a value uses SetRequest, which writes data to a device. GetResponse is the reply message to any request, not the method used to move to the next item. (Note: GetBulkRequest can fetch many items at once for efficiency, but the operation that specifically retrieves the next data item is GetNextRequest.)