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Networking

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Networking
Computer network
Types of network
Personal Area Networks (PANs)
Local Area Networks (LANs)
Metropolitan Area Networks (MANs)
Wide Area Networks (WANs)
Classification of Network Architecture
Client-server architecture
Peer-to-peer architecture
Hybrid architecture
Network topology
Bus Topology
Star Topology
Ring Topology
Mesh Topology
Tree Topology
Hybrid Topology

Published in: Education, Technology

Networking

  1. 1. COMPUTERNETWORKCREATED BY:-PALASH SACHAN
  2. 2. CONTENTSINTRODUCTIONCOMPUTER NETWORKTYPES OF NETWORKCLASSIFICATION OF NETWORK ARCHITECTURENETWORK TOPOLOGY
  3. 3. INTRODUCTION A computer network is a telecommunications network that allowscomputers to exchange data. The physical connection between networked computing devices isestablished using either cable media or wireless media. The best-known computer network is the internet.
  4. 4. COMPUTER NETWORK A collection of computing devices that are connected in various waysin order to communicate and share resources. Usually, the connections between computers in a network are madeusing physical wires or cables. However, some connections are wireless, using radio waves orinfrared signals.
  5. 5. TYPES OF NETWORK Based on the size and the coverage area, networksare categorized into the following types:Personal Area Networks (PANs)Local Area Networks (LANs)Metropolitan Area Networks (MANs)Wide Area Networks (WANs)
  6. 6. PERSONAL AREA NETWORKS (PANs) A personal area network (PAN) is a computer network used for communicationamong computer and different information technological devices close to oneperson. Is a small network established for communication between differentdevices, such as laptops, computers, mobiles, and PDAs. A pan may include wired and wireless devices. The reach of a pan typically extends to 10 meters.
  7. 7. LOCAL AREA NETWORK(LANs) A local area network (LAN) is a network that connects computersand devices in a limited geographical area such as a home, school,office building, or closely positioned group of buildings. Each computer or device on the network is a node. Wired LANs are most likely based on Ethernet technology.
  8. 8. (WAN)It is relatively larger than LAN and extends across a city or ametropolitan.It is created by connecting two or more LANs located atdifferent locations in a city.
  9. 9. WIDE AREA NETWORK(WANs) A wide area network (WAN) is a computer network that covers a largegeographic area such as a city, country, or spans even intercontinentaldistances. A WAN uses a communications channel that combines many types of mediasuch as telephone lines, cables, and air waves. A WAN often makes use of transmission facilitiesprovided by common carriers, such as telephonecompanies. One of the most prominent examples of theexisting wans is the Internet.
  10. 10. CLASSIFICATION OF NETWORKARCHITECTUREThe architecture of a network is a logical design thatdetermines how the devices in the network communicate.The commonly used architectures for computer networks are: Client-server architecture Peer-to-peer architecture Hybrid architecture
  11. 11. CLIENT-SERVER ARCHITECTURE On a network built using the client-server architecture, thedevices communicate to other devices through a centralcomputer referred to as a server. The server is a terminal with high processing power, whichprovides services for the other computers on the network. The client is a terminal that accesses the resources availableon a server.
  12. 12. PEER-TO-PEER ARCHITECTURE On a network built using the peer-to-peer architecture, no specificdistinction exists between a client and a server. Any node can provide a service as well as send a request for aservice from another node on the network. The peer-to-peer network architecture allows sharing of resources,data, and users. Each node on the network has full control over the networkresources.
  13. 13. HYBRID ARCHITECTURE A hybrid, in general, is a composition of two different types ofelements. A hybrid network architecture is created to get the benefits ofboth, the peer-to-peer and the client-server architectures, in anetwork.
  14. 14. NETWORK TOPOLOGY The pattern of interconnection of nodes in a network is called the Topology. This layout also determines the manner in which information is exchangedwithin the network. The different types of network topologies that can be used to set up anetwork are:Bus TopologyStar TopologyRing TopologyMesh TopologyTree TopologyHybrid Topology
  15. 15. BUS TOPOLOGY Popular topology for data network. Single transmission medium onto which various nodes areattached. Normally coaxial cable is used. Terminators at both end of BUS absorb signal, removing itfrom BUS.
  16. 16. STAR TOPOLOGY The star topology connects nodes over a network using a central control unit called thehub. You can easily add nodes to a star-based network by attaching the required nodes to thehub. Setting up a star topology requires a lot of cabling because allthe nodes have to connect to the hub.
  17. 17. RING TOPOLOGY The ring topology connects the nodes on a network through a point-to-point connection. Data is accepted from one neighboring node transmitted to other. Data travels in one direction. If one of the nodes on the networkstops, the entire network stops functioning.
  18. 18. MESH TOPOLOGY Each node is connected to more than one node. This provide an alternate route mechanism. Excellent for long distance networking. Supports back-up and rerouting. Used in large internetworking environments with stars, rings andbuses as nodes .
  19. 19. TREE TOPOLOGY The tree topology is created where the nodes are connected in ahierarchical manner. In tree topology, the device at the root is referred to as the parentfor all the other nodes or devices in the network. The nodes below a parent node are referredto as child nodes.
  20. 20. HYBRID TOPOLOGY The hybrid topology can be a combination of two or more basictopologies, such as bus, ring, star, mesh, or tree. Hybrid networks combine more than two topologies, which, inturn, enable you to get advantages of the constituent topologies.

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