COMPUTER NETWORKING

What are the different hardware components of a network?

NODES

A physical network node is an active electronic device that is attached to a network and is capable of creating, receiving, or transmitting information over a communications channel.

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SERVER

A network server is a powerful computer connected to your network. Network servers have many functions. They are usually used for shared file storage and to run centralised applications, such as your customer database.

A network can have more than one servers.Each server has a unique name.

Types of SERVErs

1.NON dedicated SERVERS

In a network ,if a workstation also acts as a server it is called a non-dedicated server.It is not completely dedicated to serving.

These are slower and needs more memory.
Networks having non-dedicated servers are called PEER TO PEER networks.

2.DEDicated servers

A computer is reserved as a server whose sole purpose is to help nodes access data, software and other resources.This is a called a dedicated server.

Networks using such a server is called MASTER -SLAVE networks.

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TYPES OF SERVERS

FILE SERVEr

• A file server is a computer attached to a network that has the primary purpose of providing a location for shared disk access, i.e. shared storage of computer files (such as photographs, movies, images, databases, etc.) that can be accessed by the workstations.

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PRINT SERVER

• A print server is a software application, network device or computer that manages print requests and makes printer queue status information available to end users and network administrators.

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MODEM SERVER

• It helps a group of network users use a modem to transit long distance messages.

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NETWORK INTERFACE UNIT(NIC)

It is an interpreter that helps establish communication between the server and workstations.Each NIU has a unique number known as node address.It is also called TAP and NIC.Each NIC has a unique physical address known as MAC address.

The NIC contains the electronic circuitry required to communicate using a wired connection (e.g., Ethernet) or a wireless connection (e.g., WiFi). A network interface card is also known as a network interface controller, network adapter, or Local Area Network (LAN) adapter.

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SWITCHING TECHNIqUES

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