Cisco Prime LAN Management Solution

D.

Cisco Prime LMS 4.1 uses TCP port 43440.

The Cisco Prime LAN Management Solution (LMS) application is a network management tool used to monitor and configure network devices. Cisco EnergyWise is a Cisco technology that enables the management of power consumption of network devices and helps reduce energy costs. Cisco Prime LMS can be used to manage Cisco EnergyWise domain members.

When Cisco Prime LMS communicates with Cisco EnergyWise domain members, it uses the UDP multicast protocol. UDP (User Datagram Protocol) is a connectionless protocol that does not establish a connection before sending data. Multicast is a communication method that allows a single packet to be sent to multiple recipients at the same time. The multicast address used by Cisco EnergyWise is 239.255.250.250.

The use of UDP multicast allows Cisco Prime LMS to efficiently send EnergyWise commands and collect data from multiple devices simultaneously. This approach is particularly useful when managing large numbers of devices in a network.

Option A, UDP broadcast, is not correct because broadcast sends packets to all devices on a network segment, which is not an efficient way to communicate with EnergyWise domain members.

Option B, Cisco Discovery Protocol (CDP), is not used by Cisco Prime LMS to communicate with EnergyWise domain members. CDP is a proprietary protocol used by Cisco devices to share information about connected devices.

Option C, UDP unicast, is not used because unicast packets are sent to a single recipient, which would not be efficient for managing multiple EnergyWise domain members.

Option D, TCP, is not used because TCP (Transmission Control Protocol) is a connection-oriented protocol that requires a connection to be established before sending data. This would not be efficient for managing EnergyWise domain members.

Therefore, the correct answer is E, multicast, as it is the protocol used by Cisco Prime LMS to communicate with Cisco EnergyWise domain members.