here it goes... ehem ehem...
TOPOLOGY IS DIVIDED INTO 2 PART ==> physical topology
==> logical topology
Before we go further, topology is an arrangement or mapping of the element of a network, especially the physical (real) and logical (virtual) interconnections between nodes.
Physical topology :The physical layout of devices on a network or the way that the devices on a network are arranged and how they communicate with each other
Logical topology :the mapping of the flow of data between the nodes in the network determines the logical topology of the network.
LETS TAKE A LOOK ON MOST COMMON OF PHYSICAL TOPOLOGY:
LINEAR BUS
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- Linear refers to line and linear bus is a network configuration in which each computer is connected to the text in a straight line. The straight line also known as backbone cable.
- The important characteristic of linear bus is it has a beginning and an end. When it reaches the end, it can bounce back (called as signal bounce) interfering with network communications. Thus, terminators are put at the end of the bus.
RING TOPOLOGY
- In a ring network, every device has exactly two neighbors for communication purposes. All messages travel through a ring in the same direction (either "clockwise" or "counterclockwise"). A failure in any cable or device breaks the loop and can take down the entire network.
- To implement a ring network, one typically uses FDDI, SONET, or TOKEN RING technology. Ring topologies are found in some office buildings or school campuses.
STAR TOPOLOGY
- Alternatively referred to as a star network, a star topology is one of the most common network setups where each of the devices and computers on a network connect to a central HUB. A major disadvantage of this network topology is that if the central hub fails, all computers connected to that hub would be disconnected. Below is a visual example of a simple computer setup on a network using the star topology.
THESE ARE THE 3 MOST COMMON PHYSICAL TOPOLOGY.. à bientôt
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