EDPM (BASICS IN EDPM) 2024 EXAM Update Questions
and Answers.
What is a computer? - Correct Answer A set of electronic equipment(hardware) that is
used for entering, storing, retrieving and processing data.
Bit
Byte - Correct Answer A zero or a one
8 bits.
Kilobyte
Megabyte - Correct Answer (A file) Approx one-thousand(1,000) bytes.
(CD) Approx One million (1,000,000) bytes.
Gigabyte
Terabyte - Correct Answer Approx One billion(1,000,000,000) bytes.(Flash-drive, DVD,
Hard-Drive, Magnetic tape)
Approx one trillion(1,000,000,000,000) bytes.
Petabyte
Exabyte - Correct Answer Approx one quadrillion
(1,000,000,000,000,000)bytes
Approx one quintillion
(1,000,000,000,000,000,000) bytes
Zettabyte
Yottabyte - Correct Answer approx one sextillion (1,000,000,000,000,000,000,000) bytes
approx one septillion
(1,000,000,000,000,000,000,000,000) bytes
Advantages and disadvantages of computer - Correct Answer Adv:
, -Process information and production faster
-Increases the quality of products and services
-Storage and retrieval of information becomes easier, faster and cheaper.
-Creates employment
Dis-adv:
-creates unemployment
-computers and viruses can be costly
-most have a reliable electrical power supply
-Hazardous to health if used for long period of time. Example: eye strains
Microcomputer - Correct Answer a tablet computer, a tablet PC
- Small, inexpensive, designed for an individual user
- has a CPU, memory, I/O devices
-used at work, home
Laptop - Correct Answer - Small PC designed For mobile use
- Has a rechargeable battery
- Has all the components of a microcomputer
Mainframe - Correct Answer a large, expensive, powerful computer that can handle
hundreds or thousands of connected users simultaneously
- Designed for multiple users
- Occupy the whole floor of a building
- Process billions of instructions per seconds
- Helps large business carry out critical applications:
Example - running A.T.M.S. Delivering emails, running an air-traffic control system
Supercomputer - Correct Answer -powerful and expensive
-process trillions of instructions per sec
-used in applications that requires huge amounts of long calculations
-can be used for weather forecasting