Week 3 - Networking

Ehem2, Assalamualaikum & wassup everyone!!!

In my latest class, I had learnt that the networking exist from the stone aged already. I was wondering on how people of stone aged practice the networking in their lives. And then Dr Dayang shows us some example.

Then I started to understand how was networking is in the ancient time. It was very difficult to communicate in that time. So they need the networking to help them can communicate between two person that lives so far away.

Gratefully we can communicate easily now with the help of technology of networking. So be thankful to live in this era please…. J

Say hello to NETWORKING!!!!

What is network??? It is the collection of connected intelligent computing devices by cabling that is the basic network.

These are 4 types of networks:

LAN (Local  Area Network) - The computers are connected close together in the same building or room.

WAN (Wide Area Network) - The computers are connected far apart and are connected by telephone lines or radio waves within the wide area such as within Malaysia or World.

MAN (Metropolitan Area Network) – The network that connect computers within the large area such as UTM Skudai but not as wide as WAN.

PAN (Personal Area Network) – The network that connects computers within the range of 10 meters using the wifi routers or broadbands modems. For example streamyx , Celcom Broadband , P1Wimax, etc.

NETWORKING DEVICES

ROUTERS - is a computer networking devices that forwards data packets to their destinations, based on their addresses that is known as IP address.

HUBS – is a networking component which acts as a convergence point of a network, allowing the transfer of data packets.

BRIDGES - is a hardware device used to create a connection between two separate computer networks or to divide one network into two. Usually use the same internet protocol.

GATEWAYS – is a network point that can connect two different networks that use two different protocols.

I found that this week lecture was quite interesting. There are some terms that I never heard before that makes me want to know more about it.

Ok that’s all for this week..

See you soon…………

Week 2 - Data Communication

Assalamualaikum & wassup..

We meet again in my blog.. Well this is my second post. This week we had learnt about DATA COMMUNICATION. Do you know what data communication is??? For me, when I hear the words itself what I had understand from it is the communication that use devices to communicate between at least two person. The devices used in data communication usually the computer and other devices that connect with the internet. First of all, I would like to mentioned about two types of data transmission.

They are:
1)  analog transmission
2)  digital transmission

type of transmission

What is analog transmission?

It's a transmission that uses signal that are exact replicas of a sound wave or image. There are carrier waves whereby the added frequency of electromagnetic current will help to produce a continuous electric wave.

eg: Standard phones, fax machines and modem.

What is digital transmission then?

It is a type of transmission where the signals are converted into a binary digit, which consists of two elements. Where do we usually see digital transmission? Normally, it can be found in the electronic communication.

Next, I would like to talk about bandwidth. BANDWIDTH. I never heard the word before. Bandwidth is the amount of data that can be transferred in a fixed amount of time. There are books that mentioned that bandwidth are defined as the speed of the data transferred. But according to the notes in class, it is about the amount of data, so we stick to that.

The bandwidth are measured by bps (bit per second), Mbps (Megabits per second). It is an advantage to have a higher bandwidth as the data will be transferred faster and efficiently.

Lastly, we will discuss on the directions of data transmission. There are two types:

1) simplex
2) duplex
  - half duplex
  - full duplex

SIMPLEX

It is a one way communication. Data usually travels in single direction. Eg: door bell. However it is very uncommon to be used in computer communication.

HALF DUPLEX

Data can travel in either direction but can only travel in one direction at a time.
eg: USB

That's all for now. I'll see you in my next entry! XD Leave your comment please.. (^_^)

WEEK 1 : INTRODUCTION TO TELECOMMUNICATION

Assalamualaikum & wassup everyone!!!

Actually I am not so common with these writing.. This is my first time doing it.. So it quite difficult for me to do it.. Gratefully my friends help me a lot when I am writing this blog.. Thanks bro..

Introduction to Telecommunication


What is communication??
What I understand about communication is it is a two way interaction that involve at least two persons. Communication is occur when both of them that are the listener and speaker understand and get the message that the speaker want to deliver.

What about telecommunication???
The word tele itself mean a far away distance. So, telecommunication is the interaction between at least two person using devices between a far distance. The telephone is invented because of this purpose. To make people able to communicate each other in the far distance.

The other thing we learnt in the introduction is about history of the computer. I think the history is the boring part of this telecommunication subject.. But its not our lecturer fault.. For me, the history itself is boring.

Ok enough for the nonsense. Do you know that the computer actually is originated from the tools that call abascus??? Abascus is a tool used by Chinese to calculate. That the same concept that computer today used. The computers used the calculation to operate. This is an abascus :

We used to have this in primary school right?? It is the interesting tool to use but unfortunately I had forgotten on how to use it now..

Beside of these things we had learnt, we also learnt about the elements of computer and communication. There are 6 of them that are :

- people

- procedure

- data

- hardware

- software.

ok thats all about this week post.. I hope we will see again in next post...
have a nice day k...