Chapter 2 Understanding fuction and Operation of Varios ICT Devices

ICT

Page 77-79

EVALUATION OF CHAPTER 2

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 devices inside a CPU?
   3. What is the abbrevation and the function of ROM?
   4. Name three examples of network interface cards.
   5. Name aqd explain several cables that use on wired network.

Answer :

   1. The letter W is represented by the number code 87.
   2. a. Control unit is to translate commands or instructions in a series and then continues them to the entire
           computer parts.
       b. Arithmetic Logic Unit (ALU) is to process data by adding, substracting, comparing, and using logical
           formulas.
       c. Memory is to collect or to store data to run an application program. 
   3. ROM (Read Only Memory) is a permanent memory that can be read but cannot be updated. ROM is to
       save computer operation program, such as BIOS and booting.
   4. Ethernet, arcnet and token ring.
   5. a. UTP (Unshielded Twisted Pair), it consistsof a pair of plastic wrapped conductor and each is colored.
       b. STP cable (Shielded Twinsted Pair), STP cable is similar with 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