Answer: The entrance facility is the place where the connection to a WAN is located. It is the point where the LAN equipment ends and a third-party provider's equipment and cabling begins. The another name for this point is demarcation point.
Explanation:
Demarcation means separation of two things. It means the boundary or the border. If we talk about networking then the demarcation point means a point where two networks are separated from others. It means a point where the public network is provided by a telecommunication company ends and the customer's network begins i.e his private network.
WAN means wide area networks that connect the large number of LAN i.e Large area networks. The Demarcation point ends our connection with WAN which spreads over large areas and joins our connection with third party's equipment.
