Network Topology

Made By-Gaurav YadavClass - X - D

Network Topology Physical topology refers to the

placement of the network's various components, including device location and cable installation, while logical topology shows how data flows within a network, regardless of its physical design

Types Of Physical Topology

Bus Topology Star Topology Ring Topology Tree Topology Mesh Topology

Bus Topology A linear bus topology consists of a

main run of cable with a terminator at each end. All servers workstations and peripherals are connected to the linear cable

Advantages –

Easy to install and use. Cables are less used then star or ring

topology.

Disadvantages-

Disorder in any node may lead to failure of entire data transmission.

It is difficult to add a new node to the structure.

Bus Topology

Star Topology A star network is designed with

each node (file server, workstation, peripheral) connected directly to a central network hub or server.

Advantages – An advantage of the star topology is

the simplicity of adding additional nodes.

Good option for modern networks Low startup costs Easy to manage

Disadvantages- Hub is a single point of failure Requires more cable than the bus

Star Topology

Ring Topology A ring network is one where all

workstations and other devices are connected in a continuous loop. There is no central server. A network topology that is set up in a circular fashion in which data travels around the ring in one direction and each device on the ring acts as a repeater to keep the signal strong as it travels

Advantages-

Easier to manage; easier to locate a defective node or cable problem

Handles high-volume network traffic Enables reliable communication

Disadvantage-

Expensive Requires more cable and network

equipment at the start

Ring Topology

Tree Topology This particular type of network

topology is based on a hierarchy of nodes. The highest level of any tree network consists of a single, 'root' node, this node connected either a single (or, more commonly, multiple) node(s) in the level below by (a) point-to-point link(s)

Advantages – It is scalable. Secondary nodes allow more

devices to be connected to a central node. Point to point connection of devices. Having different levels of the network makes

it more manageable hence easier fault identification and isolation.

Disadvantages- Maintenance of the network may be an issue

when the network spans a great area. Since it is a variation of bus topology, if the

backbone fails, the entire network is crippled.

Tree Topology

Mesh Topology It is also known as graph topology. In this topology each

node is connected in another node “Directly". So there is a mesh in the network as there are so many wires that are connected to each and every node.

Fully Connected- A fully connected network is a communication network in which each of the nodes is connected to each other. A fully connected network doesn't need to use switching nor broadcasting.

Partially Connected- The type of network topology in which some of the nodes of the network are connected to more than one other node in the network with a point-to-point link.

Mesh Topology Fully Partially

M.C.Q Physical topology have _____ no. of

topologies? (a)Five (b)Two Ans. (a)Five

In case of failure of one node in ring topology the whole system crashes

(a)True (b)False Ans. (b)False

If hub fails then whole network fails. a)True (b)False Ans. (a)True

Mesh topology is of _______ types. (a)three (b)two Ans. (b)two

Bus topology is _____________ (a)Expensive

(b)cheap Ans. (b)Cheap

_______ topology require more cable than Bus topology

(a)Star (b)Ring Ans. (a)Star

In ______topology each node is connected to a single cable?

(a)Bus (b)Ring Ans.(a)Bus

Token passing is used in ________ topology? (a)Star (b)Ring Ans.(b)Ring

Topology is divide in _____ types in accordance with the transmission method

(a)three (b)two Ans. (b)two

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