Capter 2 Understanding Functions and Operating of Various ICT Devices

A. MULTIPEL 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 latter W represented ?

• By the code number 87

2.  Name and explain all supporting devices inside a CPU ?

• a. control unit is translate commands or instructions in s series and then continues them to the entire computer parts. this parts is how the processor controls the entire computer operation.
• Arithmetic Logic Unit (ALU) is to process data by adding, substracting, comparing and using logical.
• Memory is to collect or to store  data to run an application program. The capability depends on the memory capacity, which is stated in Byte, KByte and GByte unit.

3. What is the abbreviation and function of ROM ?

• ROM = Read Only Memory

Function = ROM is to save computer operation program, such as BIOS and booting.

4. Name three example of  network interface card !

• Ethernet, arcnet, and token ring.

5. Name saveral cables that use on a wired network !

• UTP Cable (Unshielded Turisted Pair)

 It consist of a pair of plastic urapped conducter and each is colored. The frequency ranges from 100 Hz to 5 MHz.

•  STP Cable (Shieelded Twisted Pair)

STP cable is similar with UTP cable, except that is has double wrap. the middle wrap is a metal foil to avoid electromagnetic interference. other than that, STP cable connector and UTP cable connector are alike.

• Coaxial Cable 

  Coaxial Cable consists of a main copper conductor with three wrap.

•  Optical Fiber

Optical Fiber is made of plastic or glass that acts as a medium for signal transmission in the form of light.