IGMP

(I)nternet (G)roup (M)ulticast (P)rotocol AKA: Internet Group Management Protocol.

The acronym "IGMP" stands for Internet Group Management Protocol. Put simply, it is an application which allows membership of online groups, such as gaming sites.

The Network Layer in the TCP/IP model is responsible for routing data packets between different networks. It determines the best path for data to travel from the source to the destination through various interconnected networks. The Internet Protocol (IP) is the main protocol used at this layer to address and forward packets.

Simple Network Management Protocol (SNMP) is a popular protocol for network management. It is used for collecting information from, and configuring, network devices, such as servers, printers, hubs, switches, and routers on an Internet Protocol (IP) network.

A port for this ^.

Google is your friend.

Management cadre is a career management program and or or group of employees strategizing/ learning the management protocol. Done with individuals that are likely to become a manager.