Chapter 2. Understanding Functions and Operating Various ICT Devices

A. Multiple Choice

1. A
2. C
3. B
4. B
5. E
6. E
7. C
8. B
9. A
10. C 

 B. Essay

1. In ASCII code,by what code is letter W represented?
2. Name and explain all supporting decided inside a CPU ?
3. What is the abbreviation and the function of ROM?
4. Name there example of network interface cards?
5.  Name several cables that use on wired network ?

Answer
1. The letter W is represented by the number code 87
2. ~ Control units is to translate command or intructions in a series and then continues them to the entire          computer parts. This part is how the processor controls the entire computer operation
    ~ Arithmatic Logic Unit (ALU) is to process data by adding, substaction, comparing and usig logical formulas.
   ~Momory is to collect or to store data to run an application progam.
3.  ROM is a permanent memory that can be read but cannot be upload. ROM is to save computer operation program, such as BIOS and booting.
4. ~ Ethernet
    ~ Arenet
    ~ Token Ring
5. ~ UTP  Cable (Unshielded Twisted Pair) it consist of pair of plastic wrapped conductor and each colored. The frequency ranges from 100 HHz. A UTP  connector is required to install a UTP cable on network card, such as RJ 45 connector. The cost of UTP  is relatively cheap.
    ~ STP Cable is a similar with UTP cable, except that has double wrap.
      UTP cable,except that it has
           doublewrap
       c. Coaxial Cable, consist of a main copper conductor with three wraps
       d. Optical Fiber, is made of plastic or glass that acts as a medium for signal transmission in the form of
           light