TOPOLOGY – defines the structure of the network. There are two parts to the topology definition: the physical topology which is the actual layout of the wire (media) and the logical topology which defines how the media is accessed by the hosts. It refers also to how computers are being connected with each other.

The types of topologies:

1. BUS topology – uses a single backbone segment (length of cable) that all the hosts connect to directly. The idea is that is just like riding a bus. It has only one driver and many passengers who are riding.

2. RING topology – connects one host to the next and the last host to the first. This creates a physical ring of cable.

3. STAR topology – connects all cables to a central point of concentration. This point is usually a hub or switch. It has a focal point where all the resources are there.

4. EXTENDED STAR topology – uses the star topology to be created. It links individual stars together by linking the hubs/ switches. This will extend the length of the network

5. HIERARCHICAL topology - is created similar to an extended star but instead of linking the hubs/ switches together, the system is linked to a computer that controls the traffic on the topology

6. MESH topology – is used when there can be absolutely no break in communications. So as you can see in the graphic, each host has its connections to all other hosts. This also reflects the design of the internet which has multiple paths to any one location.

HOSTS – devices that connect directly to a network segment. These hosts include computers, both clients and servers, printers, scanners and many other devices. These devices provide the users with connection to the network, with which the users share, create and obtain information.

Network Interface Card (NIC) – is a printed circuit board that fits into the expansion slot of a bus on a computer’s motherboard or peripheral device. It is considered to be found in Layer 2 devices because each individual NIC throughout the world carries a unique code, called the Media Access Control (MAC) address.

You can build computer networks with many different media types. Each media has advantages and disadvantages. What is an advantage for one media (category 5 cost) might be a disadvantage for another (fiber optic cost). Some of the advantages and disadvantages are:

  • Cost
  • Ease of installation
  • Cable length

REPEATER - is an electronic device that receives a signal and retransmits it at a higher level and/or higher power, or onto the other side of an obstruction, so that the signal can cover longer distances. It is used when the type of cable (CAT5 UTP) is long. CAT5 UTP has a maximum length of 100 meters (approximately 333 feet). The purpose of a repeater is regenerate and retimes network signals at the bit level to allow them to travel a longer distance on the media.

HUB - is a device for connecting multiple twisted pair or fiber optic Ethernet devices together and thus making them act as a single network segment

There are different classifications of hubs in networking:

1. The first classification is active or passive. Most modern hubs are active; they take energy from a power supply to regenerate network signals. Some hubs are passive devices because they merely split signal for multiple users, like using a “Y” cord on a CD player to use more than one set of headphones.

2. Another classification of hubs is intelligent or dumb. Intelligent hubs have console ports, which mean they can be programmed to manage traffic in the network. Dumb hubs simply take an incoming networking signal and repeat it to every port without the ability to do any management.

BRIDGE – refers to a device which has just two parts. It filters the frames and how this is actually accomplished.

SWITCH – is to concentrate connectivity, while making data transmission more efficient. A device that is able to combine the connectivity of a hub with the traffic regulation of a bridge on each port.

ROUTER – the first device that you will work with that us at the OSI’s network layer, or other known as Layer 3. The purpose of a router is to examine incoming packets, choose the best path for them in a network and then switch them to the proper outgoing port

Comments 63 comments

mockon 6 years ago


54524 6 years ago


6 years ago

very bad ......... nothing is there.......... dude.......

andrew totong 6 years ago


lot of help

.. 5 years ago

what a crap.

.,,,,,,,,,, 5 years ago



chandan kumar divedi 5 years ago

thanks for such a good information.

gfgff 4 years ago


okia 4 years ago


asdasd 4 years ago


mai2x 4 years ago

thanks for the help us here to solve our homework..here...thanks and god bless

wala lang 4 years ago


nestor 4 years ago


darnell 4 years ago

thnk a lot

britney 4 years ago

Thanks 4 making elewa this things

xubi 4 years ago

i want network topologies advantages in business??

Arjun kumar 4 years ago

Thanks fr the help us....thanku thanku thanku thanku thanku thanku thanku

rocky 4 years ago

this was amazing and i would also like to thank you very much for this ueful info.

akshay kumar 4 years ago

A very useful Information thank you very much.

I was asked to do answer a type of question that is depending on network topologies in the Bollywood so I revised It from this website. Thanks Bollywood actor Akshay Kumar.

alenor 4 years ago

u did a gud job..............................................................

Semwal.ashu2010@gmail.com 4 years ago

Thankx guizzsss...

reid'21 4 years ago

thank you for the help... God bless..

bens 4 years ago


harpreet singh 4 years ago

all are good

cassandra 4 years ago


gian marwha 4 years ago

niceeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee! frind

:P 4 years ago

helooo :P

,nskjmhsa 4 years ago

soooooooo bad and not for use

prashant 4 years ago


felix 4 years ago

dhldutyuiga; opif0ui a

MICHAEL 4 years ago


shivam sharma 4 years ago

there is nothing in this site,,,,,,It is just for waisting ur timeeeeeeeeee.......................so please update the site with a lot of information\

shruti 4 years ago

waste of timeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee.............. dude dnt c dis dis again

nabeel 4 years ago


alan 4 years ago



amar 4 years ago

thks u all who serve this netwrk for giving advantage of our assingment .

vinay chanchalani 4 years ago

kuch to bhi

salman khan 4 years ago

ye vinay pagal he kya yar?

vinaychanchalani 4 years ago

salman teri maa ki chuchi

maezieh 4 years ago

thanks for being jerk



suicise blink 3 years ago

tank you barry match

nicks 3 years ago

this gives a proper information

nivek 3 years ago

thank you so much..! :)

from: kely24

jara 3 years ago

I think that, really its so help full for everyone! Thanks

Abdurakhmon 3 years ago

uneducuate information here. site must be reorganized with usefull informations

john 3 years ago

awesome piece of info will help me soo much ..............................i think

John's Father 3 years ago

This will not help you now go to the kitchen and make me a sandwich im tired of procrastibating

john 3 years ago

no dad , me and carl are busy in the room right now "studying" male reprodtive organs

Carl 3 years ago

I cant find The 'D'

Carl 3 years ago


gocchi 3 years ago


jordon ul haq 3 years ago

kya bakwas chap de tumne zara sambhal ke chapa kaaro nahi to band ho jayega

Saroj shah 3 years ago


vfjmrcfgn 2 years ago

this was very good to understand the topologies

kayode 2 years ago

good job, well done

MELDS 2 years ago


kapil 2 years ago

thank u

kkkkkk 2 years ago


sachin 2 years ago

how is saying good about information................

ninja tartar 2 years ago

amen hahaha

palappopoy 2 years ago

what is their functions

thnksss 14 months ago

Thanks u did a fantastic job.........niccc.....

    Sign in or sign up and post using a HubPages Network account.

    0 of 8192 characters used
    Post Comment

    No HTML is allowed in comments, but URLs will be hyperlinked. Comments are not for promoting your articles or other sites.

    Click to Rate This Article