Think of a topology as a network\'s virtual shape or structure. This shape does

Question

Think of a topology as a network's virtual shape or structure. This shape does not necessarily correspond to the actual physical layout of the devices on the network. For example, the computers on a home LAN may be arranged in a circle in a family room, but it would be highly unlikely to find a ring topology there.

What are the advantages and disadvantages of the processor network topologies? Identify the different applications and environments that are suitable for each physical topology. Is there a relationship between the computer network topologies and processor network topologies? Explain.

Explanation / Answer

Topology is the simplest of network topologies. In this type of topology, all the nodes (computers as well as servers) are connected to the single cable (called bus), by the help of interface connectors. This central cable is the backbone of the network and is known as Bus (thus the name). Every workstation communicates with the other device through this Bus.

A signal from the source is broadcasted and it travels to all workstations connected to bus cable. Although the message is broadcasted but only the intended recipient, whose MAC address or IP address matches, accepts it. If the MAC /IP address of machine doesn’t match with the intended address, machine discards the signal.


Advantages (benefits) of Topology:-

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1)  It is easy to set-up and extend bus network.
2)  Cable length required for this topology is the least compared to other networks.
3)  Bus topology costs very less.
4) Linear Bus network is mostly used in small networks. Good for LAN.

Disadvantages (Drawbacks) of Topology:-

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1)  There is a limit on central cable length and number of nodes that can be connected.
2)  Dependency on central cable in this topology has its disadvantages.If the main cable (i.e. bus ) encounters some problem, whole network breaks down.
3)  Proper termination is required to dump signals. Use of terminators is must.
4)  It is difficult to detect and troubleshoot fault at individual station.
5)  Maintenance costs can get higher with time.
6)  Efficiency of Bus network reduces, as the number of devices connected to it increases.
7)  It is not suitable for networks with heavy traffic.
8)  Security is very low because all the computers receive the sent signal from the source.

Physical Topology:-

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Physical topology refers to the interconnected structure of a local area network (LAN). The method employed to connect the physical devices on the network with the cables, and the type of cabling used, all constitute the physical topology. This contrasts with logical topology, which describes a network's media signal performance and how it exchanges divice data.

Types of physical topologies include:-

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Linear Bus Topology: A single cable to which all network nodes are directly connected. The cable has terminators at each end to prevent the loss of signal.

Star Topology: A topology with a single access point or a switch at the center of the topology; all the other nodes are connected directly to this point.

Tree (Extended Star) Topology: A combination of both the star and the linear bus topologies. This topology has multiple access points connected to the linear bus, while the nodes are connected to their respective access points.

relationship between the computer network topologies and processor network topologies:-

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The Topology Processor Calculates the Topology Model for the Real-time Conditions .A computer network or data network is a telecommunications network which allows computers to exchangedata. In computer networks, networked computing devices exchange data with each other using a data link. The connections between nodes are established using either cable media or wireless media.

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