Layer 7, Aplication
nv c
Application Layer 7
For network devices, in most cases yes. Operating systems do not need to rely on SNMP, and in the case of Microsoft, it's recommended against for security reasons.
SNMP is the most widely used protocol for network monitoring
SNMP
HTTP SNMP Telnet
*HTTP*SNMP*Telnet
Simply Managing a Network through a protocol.
Simple Network Management Protocol (SNMP)
Brute force
SNMP