Which ports are associated with the Simple Network Management Protocol (SNMP)?

The Simple Network Management Protocol (SNMP) primarily uses ports 161 and 162. Port 161 is utilized for sending and receiving SNMP messages, which include requests for data from network devices, as well as responses to those requests. This port is crucial for the management of network devices, allowing administrators to monitor and control devices on a network.

Port 162, on the other hand, is designated for SNMP traps, which are notifications sent from network devices to management stations to report significant events or changes in status. These traps are essential for proactive network management and alerting.

In contrast, the other options refer to different protocols. For instance, ports 20 and 21 are associated with the File Transfer Protocol (FTP), port 22 is used for Secure Shell (SSH), and ports 989 and 990 are related to FTPS (FTP Secure). Thus, the identification of ports 161 and 162 as the ones associated with SNMP aligns perfectly with the standard usage of this network management protocol.