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Bus Linear Topology (Commonly Known As Bus Topology) :: It Is The Simplest Method of

Bus topology is the simplest networking method where all devices connect to a single cable acting as a shared communication channel. Messages are broadcast along the cable and each system examines the destination address to determine if it is the intended recipient. Only one computer can transmit at a time to avoid collisions. While cheap to install, it has disadvantages like the entire network failing if the backbone cable breaks and difficulty identifying problems.

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31 views3 pages

Bus Linear Topology (Commonly Known As Bus Topology) :: It Is The Simplest Method of

Bus topology is the simplest networking method where all devices connect to a single cable acting as a shared communication channel. Messages are broadcast along the cable and each system examines the destination address to determine if it is the intended recipient. Only one computer can transmit at a time to avoid collisions. While cheap to install, it has disadvantages like the entire network failing if the backbone cable breaks and difficulty identifying problems.

Uploaded by

nano0206
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Bus Linear Topology (commonly known as Bus Topology):

It is the simplest method of

networking computers. It consists of a single cable which is use as common backbone to connect

all devices in the network, this is also known as a common communication channel. Signal that

is transmitted over the channel makes up the messages. As the message passes along the

backbone each system receives it, after receiving the message each system examine the

destination address contained in the message.

If the destination address tells a particular system that the message is addressed to it, that

system accepts and process the message, if the message address tells the computer that the

message is intended for another system, that computer will ignore the message. At the end of the

cable, there is what’s called the cable terminator which is used to prevent the message send by a

computer to bounce back and forth along the cable. In this type of topology, only one computer

can send data at a time which can make data transmission a bit slower. Cost of installation is

very cheap compare to others; however, maintenance costs may be higher in the long run.
Advantages of Bus linear topology:

 Easy expand by connecting additional devices.

 Requires less cable length than most topologies.

 Its simplicity makes it very cheap to install.

 There is no chance of data collision since one computer transmits at a time.

Disadvantages of Bus topology:

 Entire network would shut down if there is a break in the main cable (backbone.)

 Difficulty in identifying a problem if the network shut off.

 Not a good option for a network greater than 5 devices.

 Terminators are required to eliminate data from bouncing back.

Ring Topology:

In Ring topology each device is connected to form circle type network. The data passes

from one node to the next node one until it reached its destination. A token is use as receiver to

incorporates the incoming signal and a transmitter to send the data on to the next device in the

ring. Ring topology might be structured so that there are a number of information frames or slot

in construct circulation. The device wishing to transmit first detects the arrival of an empty slot
then inserts the data it wishes to send, and mark the frame as full. The receiving node takes the

data and then marks the frame as empty. In other words one particular node has the responsibility

for generating the token or slot when the network is first constituted. This type of topology is

commonly seen in small businesses. This is not a good option for home networking.

Advantages of Ring Topology

 The ability to achieve transmission rates of the order of 10 million bits per second.

 Provision of local communication via a single channel.

 Unlike Star topology, this topology has no central server which reduces the cost of

establishing the ring topology.

 The transmission of data is relatively simple as packets travel in one direction only.

Disadvantages

 Failure of one node result into entire network failure      

 Detection of fault is very difficult in ring topology

 Isolation of fault is not easy in this topology

 Data packets must pass through every computer between the sender and recipient

therefore this makes it slower.

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