Tuesday, 8 May 2012

9th May 2012

Well, at last its our group to present our presentation today~
Tiny little bit nervous but luckily we still manage to present our findings without any unexpectedness:))
As usual, Dr Dayang will continue on her teaching syllabus first before we start our presentation.

Dr. Dayang continued her topic on the wifi technology which she taught us about bluetooth, broadband, and infrared.

 Infrared Wifi Camera

Bluetooth was created basically to solve simple problem: replacing the cables used on mobile devices with radio frequency wave. This technology includes a simple low-cost and low-power global radio system.
   Bluetooth works everywhere as long as it has the hardware that compiles with Bluetooth wireless specification to ensure communication compatible worldwide. This tech allows users bring connectivity with them anywhere they go such as Europe, Asia, America or other parts of the world.

So, how BLUETOOTH works?!
It utilizes a radio-based that does not require a line of sight connection in order to communicate. Hence, to establish a connection, 2 bluetooth equipped devices simply have to come within 10 meter range of each other. A device must request a connection either to accept or reject before communication can happen.
All Bluetooth devices can operate as both client and server. This happened due to the concept of the focus on point-to-point and point-to-multiple connection with small network called piconets. Each piconets hold up 8 active units.

Moreover, Dr. Dayang would like us to find about the future development of bluetooth technology. Hence, I found an article in the website of http://www.informit.com/articles/article.aspx?p=24243, the writer or the author mentioned that as Bluetooth wireless technology is incorporated in more personal mobile devices, it enables new uses for those devices. One such use is that of a mobile device as a method of payment for goods and services.
Any terminal that is used for retail transactions could incorporate Bluetooth wireless technology and thus connect to other Bluetooth devices to complete retail transactions. For example, a mobile phone could connect to a soda machine over a Bluetooth link to pay for a soda, or link to a kiosk at which you could buy a theater ticket. Similarly, a mobile phone, PDA, or other device could be used to pay for goods and services using Bluetooth communication links with a cash register. Indeed, through the use of Bluetooth access points, entire shopping malls, arenas, grocery stores, restaurants, and other retail areas could allow customers to perform financial transactions throughout the building. Along with electronic payment, related transactions could occur, including such things as special discounts, electronic coupons, customer loyalty benefits and so on.
Future Bluetooth Appliance

Besides that, that particular website also had stated that bluetooth technology will be more advanced in the field of medical, travel and home networking.

After Dr. Dayang finish her topic, it's our turn to present our presentation on the topic of "Forum And Chatting". Hereby, I would like to share a video about how to create a massage box, drop box and chat room. ENJOY~:))) 

Love, Alison

Friday, 4 May 2012

2nd May 2012

Time flies~
It's already the 11th week of this semester~ :DDD
unlike the days like usual, Dr. Dayang managed to teach us two topics in todays class~
Wow!!!it's sure very fast :)))
look!!'m fast!!!!XDDD

The topic for today were Wireless Technology and Unbounded Media. Let's have a brief look on it <3<3

Wireless technology is generally used for mobile IT equipment. It encompasses cellular telephones, personal digital assistants (PDA's), and wireless networking.

Wireless Communication involves:

  •       radio frequency communication.
  •        microwave communication, for example long-range line-of-sight via highly directional antennas, or short-range communication.
  •        infrared (IR) short-range communication, for example from remote controls or via IRDA.

Types of Wireless Network:

Wireless Wide Area Network(WWANs)

Wireless Metropolitan Area Network(WMANs)

Wireless Personal Area Network(WPANs)

Wireless Local Area Network(WLANs)
         Besides that, we were also get to know that broadband wireless access is a technology aimed at providing high-speed wireless access over a wide area from devices such as personal computers to data networks. According to the 802.16-2004 standard, broadband means 'having instantaneous bandwidth greater than around 1 MHz and supporting data rates greater than about 1.5 Mbit/s'.

Moreover, Media transport electromagnetic wave without physical conductor. Signals are broadcasting through air or water and therefore available to anyone who has a device capable of receiving them.

There are two types of antennas and they are:
Parabolic Dish Antenna
Horn Antenna

 Hereby, I would like to share the history of solar stirling plant technology (Parabolic Dish)~

love, Alison

Friday, 27 April 2012

25th April 2012

Due to some reasons, Dr. Dayang could not attend our class last week and hence this is our first networking class after the midsem break...Honestly, I'm still in holiday mood~So..can I extend my holiday personally?! I guess not...

   So..our topic for this week is all about cable and cabling. Cable is the medium through which information usually moves from one network device to another . There are several types of cable are commonly used with LANs. In some cases, a network will utilize only one type of cable, other networks will use a variety of cable types.

Type of Cables:
Coaxial Cable
Fiber Optic Cable

Wireless LANs

Summary for Ethernet Cabling:
10 Base T: Unsheilded Twisted Pair  :  100 meters
10 Base 2: Thin Coaxial  :  185 meters
10 Base 5: Thick Coaxial  :  500 meters
10 Base F: Fiber Optic  :  2000 meters

Cable and Topology:
Linear Bus : Coax, twisted pair, Fiber : Ethernet, Local Talk
Star : Twisted pair, Fier : Ethernet, Local talk
Star-Wired Ring : Twisted pair : Token Ring
Tree : Coax, Twisted Pair, Fiber ; Ethernet

After Dr. Dayang's teaching, there were two groups of our friends presented their group presentation tasks about creating a blog and search engine~

Hereby, I would like to introduce 2 videos which are about a tutorial on how to create our own blog and also an introduction to search engine~~


Sunday, 15 April 2012

4th April 2012

hmmmm...it's already 14th April and i'm now posting the post that I supposed to do so on the 4th of April....
  Well, today is the last day for our midsem break and honestly i'm still in holiday mood...:(
okay!back to our topic...the class during 4th of April is our last telecommunication and networking class before midsem break. time really flies
No doubt, I learnt new information and knowledge about networking before our midsem break.

Basically, computer network is classified into 3 categories that are topology, protocol and architecture.

Topology is the study of arrangement or mapping of the elements (links, nodes etc) of a network, especially the physical and logical interconnections between nodes.
·         Physical Topology (LAN)
The physical layout of devices on a network and how they communicate with each other.

·         Logical Topology (LAN)
·        The mappig of the flow of data between the nodes in the network determines the logical topology of the network.

    Types of Physical Topology:
    Linear Bus Topology

    What is Protocol?
    A set of rules that governs the communications between computers on a network.
    These rules include guidelines that regulate the following characteristics of a network such as:
               - access method
               - allowed physical topologies
               - types of cabling
               - speed of data transfer
    There are protocols for Ethernet, Localtalk, Token Ring and FDDI.

    Here by, i would like to share a video that explains about what network architecture is~ <3

    love Alison

    Thursday, 22 March 2012

    21st Mac 2012

    Time flies and it's our 3rd tutorial for this course~
    Dr. Dayang announced that we'll having our mid term test on the 31st Mac and this really alarmed me that it's the time that I should be started to focus more on my study!!!
    it's time!!!

    Okay,back to our topic,today's class lesson is "The Introduction to Networking".
    For your information, the idea of networking is as old as telecommunication~(wow!!)
    Computer networking is connecting a computer with another computer or other devices to enable them to communicate with each other. A collection of computer and other hardware devices that are connected together to share hardware, software, and data as well as to communicate with one another.
    Computer networking can be categorized into:

    There are several types of LAN based on the geographic coverage,such as
    Wireless Standard Primer
    • LAN (Local Area Network)
    • WAN (Wide Area Network)
    • MAN (Metropolitan Area Network)
    • PAN (Personal Area Network)

    Besides that, according to what Dr. Dayang taught, the network are usually categorized and classified by using 3 properties, which are
    • Topology (geometric arrangement of network)
    • Protocol (common set of rules and signals the computer on the network use to communicate)
    • Architecture (peer to peer/ client/ server)

    At the end of Dr. Dayang's lesson, she had instructed us to find the differences of Bridge, Router, Switche, and Hub. Hereby, I would like to share my results after searching the information via internet.

    In an internet network there are 4 devices that from the outside look very similar.
    A bridge goes one step up on a hub in that it looks at the destination of the packet before sending. If the destination address is not on the other side of the bridge it will not transmit the data. A bridge only has one incoming and one outgoing port.

    A router is similar in a switch in that it forwards packets based on address. But, instead of the MAC address that a switch uses, a router can use the IP address. This allows the network to go across different protocols.The most common home use for routers is to share a broadband internet connection. The router has a public IP address and that address is shared with the network. When data comes through the router it is forwarded to the correct computer.This comparison to email gets a little off base. This would be similar to the router being able to receive a packet as email and sending it to the user as a fax.
    A switch steps up on a bridge in that it has multiple ports. When a packet comes through a switch it is read to determine which computer to send the data to. This leads to increased efficiency in that packets are not going to computers that do not require them. Now the email analogy has multiple people able to send email to multiple users. The switch can decide where to send the mail based on the address. Most large networks use switches rather than hubs to connect computers within the same subnet.
    A hub is the simplest of these devices. Any data packet coming from one port is sent to all other ports. It is then up to the receiving computer to decide if the packet is for it. Imagine packets going through a hub as messages going into a mailing list. The mail is sent out to everyone and it is up to the receiving party to decide if it is of interest. The biggest problem with hubs is their simplicity. Since every packet is sent out to every computer on the network, there is a lot of wasted transmission. This means that the network can easily become bogged down. Hubs are typically used on small networks where the amount of data going across the network is never very high.

    After the lesson, it's the time that the first presentation group to present their slides on the topic of "Email Application". I personally quite familiar with all the procedures that our friends presented since I'm already a hotmail user when I was in primary school.

    Lastly, I would like to share a video about the ways to master online career networking

    love Alison

    Wednesday, 7 March 2012

    7th March 2012

    Time really flies and it's already another brand new week to post our reflections~
    Well, before we began our class this morning, we had a shock that Dr. Dayang announced that we should start our class presentation by today and this really frightened me up (although i'm in the last group =p).

    Well, since all of us didn't prepare anything and everyone was in the confusing mode on, we were given another 1 week to prepare the presentation (hoooray!!!).


    Okay, back to our topic, in today's lesson, we got to know what actually DATA COMMUNICATION is.

    Well, Data Communication is the collection and distribution of the electronic representation of information from and to remote facilities by means of electrical transmission system such as telephone lines, satellites or coaxial cable.

    Computers nowadays play an important role in life that it's a must for everyone to have their own computer or laptop. Computers are now used in every walk of life either at home, schools, and universities.

    Besides that, we also learnt about the types of signals which are the info typed data that needs to be converted into signals. There are 2 types of signal and they are:

    Moreover, we also learnt about what is Binary Digital, Synchronous Transmission, Asynchronous Transmission, Data FLOW, Simplex, Half-Duplex, Full Duplex, and lastly of course Multiplexing.

    Among all of these sub-topic, I personally get more interested with the Half-Duplex that although it can deliver messages in 2 directions but NEVER at the same time!!!! One of the most representative example is Walkie-Talkie~


    Lastly, I would like to present....
    A video that talks about the comparisons between Full Duplex and Half-Duplex......
    Hope you enjoy the show~~

    IT'S SHOWTIME!!!!!!!

    Love, Alison

    Wednesday, 29 February 2012

    29th Feb 2012

    I guess..
    This is the first time I write a blog (blush)...
    I might never write a blog if my lecturer din ask us to create our own blog to write some reflections in it...(thought's speaking)hehehe..
    Hmmmm...It's quite special to write my first blog post on the 29th Feb, after all I have to wait for another 4 years to meet up 29/02 again T.T
    Well, we have our second networking and telecommunication class today and I personally love Dr. Dayang's sense of humor (laugh)

    Anyway back to our topic, today we learnt something new about the 'Introduction to Telecommunications', that it explains and defines the word 'telecommunication'. Besides that, we also get to know about Communication Model and the Elements of Computer & Communication.

    Owhhh.. Before I forgot, Dr. Dayang had also explain the format of how we should create our own blog and the format of Group Project about the critical analysis report of networking setup of a school @ organisation.

    Hope that we'll do well in this course and of course GANBATTE KUDASAI everyone!!!! (finger crossed)

    Love, Alison