The ubiquitous access approach allows all users to transmit and receive data from users to transmit and receive data from all areas of the network across a shared device or medium.

One example of ubiquitous access shown below, in which a single intelligent Layer 2 or 3 switch or router provides WAN access for entire buildings.

Any user or any LAN can pass data through hub or routing device as well as access any other device in the network.

This style of access is good for organization that are spread out and non-structured in nature.

It provides one-dimensional flat network and used with smaller network.

Performances with performance degradation are easily diagnosed and the network can be more difficult to manage.

It offers a very large single point of failure that can take every user down at one time.