1.2 Network Topologies
logical bus topology
A network topology in which all nodes receive the data transmission at the same time, regardless of the physical wiring layout of the network.
ring topology facts
Installation requires careful planning to create a continuous ring. Isolating problems can require going to several physical locations along the ring. A malfunctioning node or cable break can prevent signals from reaching nodes further along on the ring.
Bus Topology
Network configuration wherein all computers connect to the network via a central bus cable.
logical ring topology
Network topology in which each node receives data only from its upstream neighbor and re transmits data only two it's downstream neighbor, regardless of the physical layout of the network.
logical star topology
Network topology where a central device polls each node to see if it needs to transmit data. The central device also controls how long a node has access to the cable.
Ring Topology
Network topology which connects one computer to another in a continuous loop
bus topology facts
Signals travel from one node to all other nodes. A device called a terminator is placed at both ends of the trunk cable. Terminators absorb signals and prevent them from reflecting repeatedly back and forth on the cable. It can be difficult to isolate cabling problems.
Physical topology
The way a network is physically wired. (road)
Logical Topology
The way data is transferred on the network (traffic laws)
Star Topology
network topology in which all host machines are connected to a central hub or switch
bus topology terminator
absorb signals on bus network and prevent them from reflecting repeatedly back and forth on cable.
mesh topology facts
are created using point-to-point connections. This increases the network's fault tolerance because alternate paths can be used when one path fails. Two variations of mesh typologies exist: Partial —Some redundant paths exist. Full —Every node has a point-to-point connection
Network Topology
categorizes networks based on the physical and logical relationship among devices.
Partial Mesh Topology
consists of at least two machines with redundant connections. a physical connection between devices to every other device is not required
Mesh Networking Topology
each device on the network has a point-to-point connection to every other device on the network . (Possible with Wireless networks)
star topology facts
most popular type of topology for a LAN. With a star: All network connections are located in a single place, which makes it easy to troubleshoot and reconfigure. Nodes can be added to or removed from the network easily. Cabling problems usually affect only one node.