1. Element Management System (EMS) : Element Management System (EMS), as name suggests, is a software tool that is generally used to manage all network elements. Here element represent node i.e. device such as computer, router, etc.
2. Network Management System (NMS) : Network Management System (NMS), as name suggest, is a software tool that is generally used to manage and control network i.e. interconnected nodes.
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NMS vs EMS | ems and nms difference | what is nms and ems in telecom | DWDM | OTN
What is the difference between a hub, a switch, and a router?
A hub is a small, simple, low-priced device that joins multiple computers together. A switch is a small hardware device that joins multiple computers together within one local area network (LAN) and they operate at layer 2 of the OSI model. Routers are the physical devices that join multiple wired or wireless networks together and they operate at layer 3 of OSI model.
The Internet Control Message Protocol or ICMP is belonging to the TCP/IP set and has the role of testing the notifications transmissions of hosts and gateways and manages the messages of error and control.
How is UDP different from TCP?
While TCP is a network protocol that is based on connection, UDP is not connection-based. Connection means that the transfer of data between two points on a network is made with the acknowledgment of the success of the process. TCP is used if we want to transfer data and receive confirmation that the data was really sent, no matter in what time period it was made. For example, UDP is used when a movie is streamed and we need continuous frame play without interruptions.
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A system can operate exclusively as either an NMS or an agent, or it can perform the functions of both. When a system operates as both an NMS and an agent, another NMS might require that the system query manage devices and provide a summary of the information learned, or that it reports locally stored management information. Interview Questions:
NMS executes applications that monitor and control managed devices. One or more NMSs must exist on any managed network.
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FAQ
How does NMS differ from EMS?
Which protocol is used in NMS?
What is NMS in telecom?
SNMP is most suitable for facilitating the exchange of management information within a network management system (NMS), between the management applications and agents within a network.
