The Access Layer
distribution
UPNP Universal Plug and Play - Device discovery . It goes by many names as the industry has not settled on one.
distribution
prevents collisions on a local network.
Group of devices connected together forms a Network & structure (design) in which they interconnect is called Topology.
In a Cisco borderless switched network design, the layer with more switches deployed than other layers is the Access layer. This layer connects end devices, such as computers and phones, to the network and typically requires a larger number of switches to accommodate the greater number of users and devices in a large organization.
Answering "What are the advantages and disadvantages of OSI model?"
A hierarchical network design includes the following three layers:The backbone (core) layer that provides optimal transport between sitesThe distribution layer that provides policy-based connectivityThe local-access layer that provides workgroup/user access to the networkhttp://docwiki.cisco.com/wiki/Internetwork_Design_Guide_--_Internetworking_Design_Basics#Function_of_the_Access_Layer
Network Design Helper
Yes there are many different devices that can be connected to the PS3 USB port, just not to provide internet connection because the PS3 design does not allow a USB internet connection
It allows vendors to design products following the model, so different devices from different manufacturers will work together.
Each IP address must be unique within the local network.