We have been given a task to build a physical network model
based on architecture, topology and classification of network. The picture
showed the model that we have made:
Star topology model |
Model of the network topology |
Before I explain about the architecture, I would like to
explain a meaning of network architecture.
Network
architecture:
The configuration of a computers, devices, and media on a network.
2 types of network architecture: 1. Peer-to-peer network
2. Client/server network
The above model is using a client/server network. A
client/server network in which one or more computers act as a server, and the
other computer on the network (clients) request services from the server.
Server: Control
access to the hardware, software, and other resources on the network and
provides centralized storage area from programs, data, and information.
Clients: Other
computers and mobile devices on the network that rely on the server for its
resources
Advantages as it works with any size of networks and does
not tend to slow down with heavy use. The security also is more advanced than a
peer-to-peer network, as you can have passwords to own individual profiles so
that nobody can access anything when they want. It still have disadvantages
when using the client/server network as complex and costly to set up, need to
purchase the server, network operating system and requires an expert to maintain the network . Another disadvantage
is if the server goes down it effects all the computers in the network.
The topology in the model is a star topology. Star topology
can describe as it uses a central device (hub, switch) where all the nodes are
connected to it using cables. In star topology, all data that transfer from one
node to another passes through the hub or switch until it reaches the
destination node.
Advantages:
- Adding or removing a node does not affect the rest of the star network.
- Failure of one node usually does not affect the rest of the star network.
Disadvantages:
- If the central device (hub/switch) fails, the entire star network fails.
- It is more expensive to setup because of the cost of the hub/switch.Advantages:
- Allow users on the network to share resources, such as printers, large hard drives, data, programs, in a limited geographical area.
- Reduce cost because the hardware can be shared.
- Area covered is limited.
- As data is shared there is a greater need for security - Exposed to viruses and unauthorized access
The place that represents the network model is at lecture cubicle.
Work as a team to made the network model
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