Question

why we connect nodes with the server​

Answer 1

HERE IS YOUR ANSWER

In telecommunications networks, a node (Latin nodus, ‘knot’) is either a redistribution point or a communication endpoint. The definition of a node depends on the network and protocol layer referred to. A physical network node is an electronic device that is attached to a network, and is capable of creating, receiving, or transmitting information over a communications channel.[1] A passive distribution point such as a distribution frame or patch panel is consequently not a node.

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Answer 2

Answer:

The cell has three main parts:

the cell membrane

cytoplasm which contains smaller components called organelles, and

the nucleus.