Answer:

In wireless networking, the hidden node drawback or hidden terminal drawback happens once a node will communicate with a wireless access purpose (AP), however cannot directly communicate with different nodes that are communication therewith AP.

-The hidden node drawback happens once a node is detectable from Access Point and not detectable to different nodes that communicate therewith Access purpose.

The 3 sending nodes are often arranged out at the vertices of equiangular triangle, with the receiving node within the centre.

Alternately, with resistant obstructions the subsequent arrangement works:

                                                                sender1

                                                           ???????????

receiver                                                    sender2

                                                           ???????????

                                                                   sender1