What Are Hierarchical Topology And Logical Topology?

Hierarchical Topology :A hierarchical topology  is created similar  to an extended star topology. The primary difference is that it does not use a central node. Instead, it uses ad trunk node from which it branches to another nodes.

Logical Topology :A networks logical  topology is how  the hosts communication  across  the medium . The two most common types of logical  topology  are broadcast and token   passing broadcast  topology  simply means  that each host address its data to a particular NIC to  a multicast address,  or to a broadcast address  on the network  medium. There is no order that the stations  must follow  to use  the network . It is first  serve  Ethernet  also  work  this ways, as explained later in this course. The  second  logical  topology  is  token passing.

Token passing  controls  network access  by passing an electronic  token  passing. Token passing  control network access by passing  an electronic  token sequentially to  each  host. When  a host  received the token, if can  send data on the network ,If the  host has no data to send it passes  the token to the nest host, and the process  repeats  it self. Two examples of networks that use token  passing are token Ring and FDDI , both  of which  are example  of  token passing  on a physical ring topology.