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'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