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Basic concepts of computer Networking
The document discusses different types of computer network topologies. It defines network topology as the physical configuration of cables, computers, and other devices on a network. The key network topologies covered are bus, ring, star, and mesh. Advantages and disadvantages of each topology are summarized.
Basic concepts of computer Networking
- 1. Basic Concepts ofComputer Networks and Communications Network Topology Presented by- Company Hassan Jan Habib LOGO BS (1st Semester)
- 2. Presentation Contents Definition of Computer Networks Different Network Methods LAN Network Topologies Summary
- 3. Computer Networks Definition: Computernetworking is the engineering decipline concerned with the communication between computer systems or devices. A computer network is any set of computers or devices connected to each other with the ability to exchange data.
- 4. Different Network Methods DifferentNetwork Methods are: Local area network (LAN), Metropolitan area network (MAN) Wide area network (WAN) Wireless LANs and WANs
- 5. Local Area Network(LAN) Local Area Network(LAN), which is usually a small network constrained to a small geographic area. An example of a LAN would be a computer network within a building.
- 6. DEFINITION What is a Topology ? The physical topology of a network refers to the configuration of cables, computers and other peripherals.
- 7. TYPES OF NETWORKTOPOLOGY Three commonly used network topologies are:- Bus Topology Ring Topology Star Topology
- 8. BUS TOPOLOGY All computersand devices connected to central cable or bus. Consists of a main run of cable with a terminator at each end. Popular on LANs because they are inexpensive and easy to install.
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- 10. RING TOPOLOGY Cable formsclosed ring or loop, with all computers and devices arranged along ring. Data travels from device to device around entire ring, in one direction. Primarily is used for LANs, but also is used in WANs.
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- 12. STAR TOPOLOGY All devicesconnect to a central device, called hub. All data transferred from one computer to another passes through hub.
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- 15. MESH TOPOLOGY In the mesh topology each computer are connected with each other by separate cable. Create point to point connection to every device on network. If one cable fail data always has alternative path to get to its destination. On a large scale, you can connect multiple LANs using mesh topology with leased line. This type topology generally use in military area.
- 16. DIFFERENTIATION BETWEEN THETHREE TYPES OF NETWORK TOPOLOGY WHAT ARE THE ADVANTAGES AND DISADVANTAGES OF THE THREE OF NETWORK TOPOLOGY?
- 17. SUMMARY BUS TOPOLOGY DEFINITION ADVANTAGE DISADVANTAGE •All computers •Easy to connect a •Entire network shuts and devices computer or down if connected to peripheral to a linear there is a break in the central cable bus. main cable. •Requires less cable •Terminators are length than required at both a star topology. ends of the backbone cable. •Difficult to identify the problem if the entire network shuts down.
- 18. SUMMARY RING TOPOLOGY ADVANTAGE DISADVANTAGE DEFINITION •Data is quickly •Cable forms •Data packets must pass transferred without a closed ring or through every computer ‘bottle neck’. loop, with all between the sender and computers and •The transmission of recipient therefore, this devices arranged data is relatively makes it slower. along ring. simple as packets travel in one direction •If any of the nodes fail only. then the ring is broken and data cannot be transmitted successfully. •It is difficult to troubleshoot the ring.
- 19. SUMMARY STAR TOPOLOGY DEFINITION ADVANTAGE DISADVANTAGE •Requires more cable •All devices •Easy to install and length connect to a wire. than a linear topology. central device, •Security can be If the hub or called hub. implemented concentrator fails, in the hub/switch. nodes attached are •Easy to detect faults disabled. and to More expensive than remove parts linear bus topologies because of the cost of the concentrators.
- 20. SUMMARY MESH TOPOLOGY DEFINITION ADVANTAGE DISADVANTAGE Require more cable •In the mesh •1.Provide redundant then other topology . topology each path between device.. computer are 1.Provide redundant path between device. connected with The network can be Complicated each other by expanded without implementations. separate cable.. disruption to current user..