Chapter 2. Uderstanding Functions and Operations of Various Information and Communication Technology Devices

A. Multiple Choice

1. A
2. C
3. B
4. B
5. E
6.E
7. C
8. A
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 abbreviation and function of ROM?
4. Name three examples of network interface cards.
5. Name several cables that use on a wired network.

Answer..........
1. The letter W is represented by the number code 87
2. When viewed in general, the CPU is supporting devicea. Control Unit is to translate commands or instructions in a series and then continues them to entire computer parts.
b. Arithmetic Logic Unit(ALU) is to process by adding, substracting, comparing and using logical formulas.
c. Memory is to collect or to store data to run an application program.
 But if in particular, the supporting device is a CPU fan, which serves as the CPU cooler.
3. The abbreviation of ROM is Read Only Memory and the function is a permanent memorythat can be read but cannot be updated.
4. Ethernet, Arcnet, and Token Ring.
5. UTP cable(Unshielded Twisted Pair), STP cable(Shielded Twisted Pair), Coaxial cable.