Network Topology
Network topology is refers to the layout of the computers and devices in a communications network
Type of network topology :-
- Bus Network Topology
- Ring network Topology
- Star Network Topology
Bus Network Topology Ring Network Topology Star Network Topology
Bus Network Topology
Definition:-
1- A bus network consists of a single central cable (backbone), to which
all computers and other devices connect (node).
2- Those signals are sent as electrical pulses that travel along the length
of the cable in both directions.
Bus Network Topology
1- A bus network consists of a single central cable (backbone), to which
all computers and other devices connect (node).
2- Those signals are sent as electrical pulses that travel along the length
of the cable in both directions.
Bus Network Topology
- Each devices is connected to the single bus cable through T-Connector
- A terminator is required at each end of the bus cable to prevent the single
from bouncing back and forth on the bus cable.
Ring Network Topology
Definition :-
1- A cable forms a closed loop (ring) with all computers and devices
arranged along the ring.
2- Data transmitted on a ring network travels from device to device
around the entire ring, in one direction (clockwise or counterclockwise).
Ring Network Topology
3- Token passing is one method for sending data around a ring.
4- Each devices takes a turn sending and receiving information
through the use for a token.
1- A cable forms a closed loop (ring) with all computers and devices
arranged along the ring.
2- Data transmitted on a ring network travels from device to device
around the entire ring, in one direction (clockwise or counterclockwise).
Ring Network Topology
3- Token passing is one method for sending data around a ring.
4- Each devices takes a turn sending and receiving information
through the use for a token.
Star Network Topology
Definition :-
1- All computers and other devices on the network connect
to a central devices (hub/switch), thus forming a star.
2- Provide a common central connection point to all the
other devices on the network are a hub and a switch.
Star Network Topology
3-Hub will sent data to all node and switch sent all data to the intended recepient. The data will accept, all the rest is rejected.
1- All computers and other devices on the network connect
to a central devices (hub/switch), thus forming a star.
2- Provide a common central connection point to all the
other devices on the network are a hub and a switch.
Star Network Topology
3-Hub will sent data to all node and switch sent all data to the intended recepient. The data will accept, all the rest is rejected.
| Type Of Network topology | Advantages | Disadvantages |
| Bus Network Topology | -Bus networks are inexpensive and easy to install. -Failure of one devices usually does not effect the rest of the bus network. | -A break in the cable will prevent all systems fro accessing the network. -It is difficult to identify the problem if the entire network shut down. |
| Ring Network Topology | - Cable faults are easily located, making troubleshooting easier. -the uses of token passing enbles all devices in a ring topology to share the network resources fairly. | - If one device fails, only that device is affected. - Easy to troubleshoot and isolate problem. |