While reviewing the result of scanning run against a target network you come across the following: Which among the following can be used to get this output?

Bo2k (Back Orifice 2000) is a remote access trojan used for unauthorized system control, not a network enumeration or scanning tool.

An nmap IP protocol scan (-sO) identifies which IP protocols a host supports, not the structured MIB object data produced by SNMP enumeration.

A network sniffer passively captures raw packets off the wire and does not actively query devices to generate structured SNMP MIB enumeration output.

An SNMP walk queries a target device using the SNMP GetNext or GetBulk operation to traverse all OIDs in the Management Information Base (MIB), producing hierarchical output that includes system names, interface descriptions, and network statistics. This type of structured enumeration - distinct from a port scan or packet capture - is the signature output of tools like snmpwalk or snmp-check. It reveals detailed device configuration and network topology information that an attacker can use for reconnaissance.