Networking

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Networking

Name:- Karanjeet Singh

Class:- XIISec:- BRoll No. :-16

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INDEX

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Types Of Network

Presented by:Karanjeet Singh

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A network consists of two or more computers

that are linked in order to share resources, exchange files, or allow electronic communications.

The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams

Computer Network:

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File sharing

Resource sharing

Communication and collaboration   Remote access

Data protection

Need of Computer Network:

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Routers Gateways Repeaters Bridges Hub Modem

Devices Use To Connect Network:

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Local Area Network Wide Area Network Metropolitan Area Network

Types Of Network:

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A local area network (LAN) is a group of

computers and associated devices that share a common communications line or wireless link.

Typically, connected devices share the resources of a single processor or server within a small geographic area .

. A local area network may serve as few as two or three users or as many as thousands of users.

Local Area Network:

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The WAN is a communications network that

makes use of existing technology to connect local computer networks into a larger working network that may cover both national and international locations.

Wide Area Network:

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A metropolitan area network (MAN) is a network that

interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network but smaller than the area covered by a wide area network (WAN).

It is also used to mean the interconnection of several local area networks by bridging them with backbone lines

Metropolitan Area Network (MAN):

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Network Topologies

Network Topology – Maps of how the physical or logical paths of network devices connect. The three major topologies are star, ring, and bus.

Star Topology – Most common Ethernet network topology where each device connects to a central hub or switch.

Hub – A device used with the Universal Serial Bus or in a star network topology that allows multiple device connections.

Switch – In star networks, a Layer 2 central controlling device. A switch looks at each data frame as it comes through each port.

Ring Topology – Network that is physically wired like a star network but, logically in a ring; passes control from one device to the next in a continuous fashion using a special data packet called a token. Used in Token Ring networks.

Bus Topology – Network wherein all devices connect to a single cable. If the cable fails, the network is down.

Mesh Topology – Network where all devices connect to each other by cabling to provide link redundancy for maximum fault tolerance. Most likely in WANs.

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Network TopologiesHub/Switch

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Network Topologies

Star Topology

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Network Topologies

Logical Ring Topology

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Network Topologies

Bus Topology

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Network Topologies

Differentiate between the three types of computer networks

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