Which components are required for Simple Network Management Protocol (SNMP)?

The correct answer identifies the essential components needed for the operation of the Simple Network Management Protocol (SNMP). SNMP is designed to manage and monitor devices on a network, and it operates through a few key elements.

Managed devices are the hardware components, such as routers, switches, and servers, that are monitored and managed using SNMP. These devices run an SNMP agent that collects and sends management data to a Network Management System (NMS).

Agents are software components that reside on the managed devices and are responsible for gathering information about the device’s status and sending this data to the NMS, which is crucial for effective monitoring and management.

Network Management Systems are applications that retrieve, display, and analyze the data collected by the SNMP agents, providing a centralized interface for network monitoring and management.

The combination of managed devices, agents, and network management systems allows SNMP to function effectively, simplifying the overseeing of network health, performance, and operational status. This synergy is what makes answer B the correct choice, showcasing all critical elements necessary for utilizing SNMP in network management.