What is SNMP used for in network management?

• A. Simple Network Management Protocol used to monitor and manage network devices.
• B. Secure Network Management Protocol used to encrypt data at rest.
• C. Simple Network Messaging Protocol used to send emails.
• D. Serial Network Management Protocol used for console access.

Answer: (A)

SNMP is used to monitor and manage network devices from a centralized management system. It works with an agent running on each device (like routers, switches, or servers) that exposes management data stored in a MIB. A central manager polls this data to monitor status and performance, and can also be configured to send alerts (traps) when certain conditions occur. This lets admins view metrics such as interface status, CPU and memory usage, uptime, and error counts, and even change certain settings remotely where allowed. Different versions provide security options: older versions rely on simple community strings, while newer SNMPv3 adds authentication and encryption for safer access. It’s specifically for monitoring and managing devices, not for encrypting data at rest, sending emails, or providing console access.