Wednesday, 25 April 2012

Fifth Footmark on 25 April

Introduction to Cabling

* Joke *

A wife was making a breakfast of fried eggs for her husband. Suddenly, her husband burst into the kitchen. 'Careful,' he said, 'CAREFUL! Put in some more butter! Oh my gosh! You're cooking too many at once. TOO MANY! Turn them! TURN THEM NOW! We need more butter. Oh my gosh! WHERE are we going to get MORE BUTTER? They're going to STICK! Careful. CAREFUL! I said be CAREFUL! You NEVER listen to me when you're cooking! Never! Turn them! Hurry up! Are you CRAZY? Have you LOST your mind? Don't forget to salt them. You know you always forget to salt them. Use the! Salt. USE THE SALT! THE SALT!' The wife stared at him. 'What in the world is wrong with you?You think I don't know how to fry a couple of eggs?' The husband calmly replied, 'I just wanted to show you what it feels like when I'm driving.'


* Funny Picture *

* Enjoy it *


How Do I Feel....

Today I felt quite good because lecturer taught us more information about cabling... actually this type of question was come out in our test... now, we more understand about it...

My friends also presented their slides... Thanks for them because we gained benefit from the presentation...especially the...DOGPILE...and the introduction to blog setting...

you may try ...

“In three words I can sum up everything I've learned about life: it goes on.”
Robert Frost

The lesson I attended today....
1. LAN Techonology Cabling :

    a) Cable is the medium through which information usually moves from one network device to another.
    b) Several types of cable are commonly used with LANs.
    c) In some cases,a network will utilize only one type of cable, other networks will use a variety of cable    types.

2. Types of Cables :
    Unshielded Twiested Pair (UTP) cable 
    Shielded Twisted Pair (STP) cable
    Coaxial Cable
    Fiber Optic Cable
    Wireless LANs

3. Unshielded Twisted Pair (UTP) cable

- Four pairs of wires inside the jacket
- each pair is twisted
- help tp eliminate interfereance from adjacent pairs and other electrical devices

4. Category 1 : Voice 9wayar Telefon)
    Category 2 : Data to 4 Mbps (Local Talk)
    Category 3 : Data to 10 Mbps (Ethernet)
    Category 4 : Data to 20 Mbps (16 Mbps Token Ring)
    Catogory 5 : Data to 100 mbps (Fast Ethernet)

5. The standard connector for unshielded twisted pair cabling is an RJ-45 connector

6. Shielded Twisted Pair (STP) cable

- is a type of cable wrapped in a foil shielding
- to help provide a more reliable data communication
- using TOKEN RING topology

7. Coaxial cable

- a single copper conductor at its center
- a plastic layer provides insulation
- the metal shield helps to block interference
- Bayone-Neill-Concelman (BNC) connector
- T-connector, barrer connector, terminator

8. Fibre Optics

- consists of a center glass core surrounded by several layers
- transmit light rather than electronic signals
- eliminate the problem of electrical interference
- transmit signals over much longer distances than coaxial and twisted pair

9. 10BaseT : Unshielded Twisted Pair : 100 meters
    10Base2 : Thin Coaxial : 185 meters
    10Base5 : Thick Coaxial : 500 meters
    10BaseF : Fiber Optic : 2000 meters

10. Linear Bus : Coax, twisted pair, Fiber : Ethernet, Local talk
      Star : Twisted pair, fiber : Ethernet, Local talk
      Star-wired Ring : Twisted pair : Token ring
      Tree : Coax, twisted pair, fiber ; ethernet


“Today you are You, that is truer than true. There is no one alive who is Youer than You.”
Dr. Seuss

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