Chapter 2 Understanding Functions and Operating of Various ICT Devices

A.MULTIPLE CHOICE

1.A
2.B
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?
ANSWER: The letter W is represented by the number code 87.
2.Name and explain all supporting devices inside a CPU!
ANSWER: a. Control unit is to translate commands or instructions in series and then continues them to the entire computer parts.
b. arithmetic logic unit 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.What is the abbreviation and the function of ROM?
ANSWER: ROM:READ ONLY MEMORY
ROM is to save computer operation program,such as BIOS and BOOTING.
4.Name three examples of network interface cards!
ANSWER: Ethernet,arcnet,and token ring.
5.Name several cables that use on a wired network!
ANSWER: UTP cable,STP cable,Coaxial cable,optical Fiber.