- Computer Network is a set of connected many computers in various ways for communication to each other.
- Networks may be classified according to a wide variety of characteristics.
- Computer Networking has existed for about 50 years, with the first computer network developed in the 1960s.
Types of Computer Networks:
Personal Area Network (PAN)
Local Area Network(LAN)
LAN is the most used computer network and is typically a computer network covering a small area, such as a home, or business. These typically come in wired form (Ethernet) or wireless.
Campus Area Network (CAN)
LAN is the most used computer network and is typically a computer network covering a small area, such as a home, or business. These typically come in wired form (Ethernet) or wireless.
Wide Area Network (WAN)
LAN is the most used computer network and is typically a computer network covering a small area, such as a home, or business. These typically come in wired form (Ethernet) or wireless.
Virtual Private Network(VPN)
LAN is the most used computer network and is typically a computer network covering a small area, such as a home, or business. These typically come in wired form (Ethernet) or wireless.
Types of Network Topologies:
- A network topology is the arrangement of a network, including its nodes and connecting lines.
- There are two types of network topologies: physical and logical.
- This two topologies can be categorized in some model.
Bus Topology:
LAN is the most used computer network and is typically a computer network covering a small area, such as a home, or business. These typically come in wired form (Ethernet) or wireless.
Advantages of Bus topology:
- Small work for a smart network of the bus topology.
- Few requirements of cable in the bus topology.
- Many computers can be easily connected in this bus topology.
Advantages of Bus topology:
- No fine for the big network.
- If the main cable damage then the network cannot work.
- When any problem created in the network then very difficult to find this problem in the bus topology.
Star Topology:
Advantages of Bus topology:
- In the star topology, new nodes can be added easily without affecting rest of the network. Similarly, components can also be removed easily.
- If any one computer has network failure then another computer cannot stop work.
Disadvantages of Star Topology:
- If central device network down the all connected device goes down.
- More cables are required to be connected because each computer individually connects to the central server.
Ring Topology:
Advantages of Ring topology:
- All data direction flow in the ring, reducing the chance of packet collisions.
- All information can transfer between the connected device at high speed.
- Every computer has equal access to resources.
Disadvantages of Ring topology:
- If anyone workstation or port goes down, then entire networks get affected.
- Every group of data must pass through all the computers between the source and destination
- When any network impacted than anyone network shutdown.
Tree Topology:
LAN is the most used computer network and is typically a computer network covering a small area, such as a home, or business. These typically come in wired form (Ethernet) or wireless.
Advantages of Tree topology:
- Error and that find are easy to maintain.
- If one device is damaged than other devices not affected.
- Expansion network and add new device are easily available.
Disadvantages of Tree topology:
- Maintenance has become very high.
- Cable is very long to needed.
Mesh Topology:
In this mesh topology, every network node, computer, and other devices are internally connected to the one another. All nodes not only sends its own signals but also relays data from the other nodes.
Advantages of Mesh topology:
- Any changes can do to disturb without other devices.
- Data can be sent to the different devices of one by one system.
- This topology can handle high amount data.
Disadvantages of Mesh topology:
- This topology cost is very high as compared other topology.
- This topology built and maintain is difficult and very difficult to time-consuming.
Characteristics of a Computer Network:
- Share data of the resources from one computer to another computer.
- Any file creates and copy other data into the one computer, access this all data from the other connected the computers.
- Any machine or printer are connected to the one computer then used all another computer over the network.