Which protocol is commonly used to manage and monitor network devices?

Which protocol is commonly used to manage and monitor network devices?

• A. Simple Network Management Protocol
• B. Lightweight Directory Access Protocol
• C. Session Initiation Protocol
• D. Dynamic Host Configuration Protocol

Answer: (A)

Managing and monitoring network devices revolves around collecting performance data, status information, and configurations across many devices, often from a central point. The protocol designed for that purpose is SNMP. It uses a manager that queries agents running on devices, with the data organized in Management Information Bases (MIBs). This setup lets you regularly poll for metrics like CPU load, interface status, and memory usage, and it also supports asynchronous alerts called traps, which notify you when something goes wrong. SNMP v3 even adds authentication and encryption for secure, scalable management in larger networks. The other protocols don’t fit this role as cleanly. LDAP is about accessing and modifying directory services (like user accounts and credentials), not about device health or configuration management. SIP focuses on signaling for establishing, modifying, and tearing down communication sessions (such as voice calls). DHCP assigns IP addresses to hosts on a network, rather than providing ongoing monitoring or centralized management data. So SNMP is the standard choice for managing and monitoring network devices.

Managing and monitoring network devices revolves around collecting performance data, status information, and configurations across many devices, often from a central point. The protocol designed for that purpose is SNMP. It uses a manager that queries agents running on devices, with the data organized in Management Information Bases (MIBs). This setup lets you regularly poll for metrics like CPU load, interface status, and memory usage, and it also supports asynchronous alerts called traps, which notify you when something goes wrong. SNMP v3 even adds authentication and encryption for secure, scalable management in larger networks.

The other protocols don’t fit this role as cleanly. LDAP is about accessing and modifying directory services (like user accounts and credentials), not about device health or configuration management. SIP focuses on signaling for establishing, modifying, and tearing down communication sessions (such as voice calls). DHCP assigns IP addresses to hosts on a network, rather than providing ongoing monitoring or centralized management data. So SNMP is the standard choice for managing and monitoring network devices.