Of course that’s not all: Next, you could also connect your printer, smartphone or TV to the router so that these devices are also connected to the Internet. Now you have connected different devices to each other via a central access point and created your own network.
The dots represent the nodes in the various topologies, and the lines represent the communication links. Network topologies include the following types:
Type “netstat -a” in the command prompt and press ‘Enter’, this lists all the ports being used.
Firewalls: Devices or software that monitor and control incoming and outgoing network traffic based on security rules.
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Service provider networks. These are network providers that lease network capacity and functionality to customers. Providers typically consist of telecommunication companies, data carriers, Net service providers and cable television providers.
The various devices in your home are wirelessly connected to the router, which acts as a central node (server) for the household. The router itself is connected to a much larger network: the Internet.
Computer networks are ideal for the quick exchange of information and the efficient use of resources.
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Resource sharing. Enterprises of all sizes can use a computer network to share resources and critical assets. Resources for sharing can include printers, files, scanners and photocopy machines.
Application layer. Security protocols, such as Transport Layer Security, operate at this layer and play an integral part in ensuring network security. This is the abstraction layer that communicates directly with applications and defines how high-level apps should access the network to start a data transfer.
The working of Computer Networks can be simply defined as rules or protocols which help in sending and receiving data via the links which allow Computer networks to communicate. Each device has an IP Address, that helps in identifying a device.
Before the advent of modern networks, communication between different computers and devices was very complicated. Computers were connected using a LAN cable.