Which of the following controls the way in which the computer system functions and provides a means by which users can interact with the computer.
- A. CPU
- B. application software
- C. operating system
- D. ALU
In computer architecture, the type of bus that connects the major components of a computer system is
- A. address
- B. data bus
- C. control bus
- D. system bus
Using Boolean identities, reduce the given Boolean expression:
A(A+1) + A(B+0) + C.1
- A. A + B + C
- B. A.B.C
- C. A.B + C
- D. A + C
The first stage of data processing activities is ?
- A. Manipulation
- B. Collection
- C. Conversion
- D. Sorting
One of the following is not a good way to prevent virus.
- A. encryption
- B. use of firewall
- C. carelessly exposing your vital and personal information
- D. use of antivirus software
Translating the problem statement into a series of sequential steps describing what the program must do is known as
- A. coding
- B. creating the algorithm
- C. debugging
- D. writing documentation
The closest computer language to human is ?
- A. High level language
- B. Low level language
- C. Machine language
- D. Assembly language
If the control unit controls other units of the CPU, which unit stores instructions,data and intermediate results.
- A. Memory unit
- B. Arithmetic section
- C. Control unit
- D. Logic section
Computers that are small and low cost are referred to as ?
- A. mini computers
- B. small computers
- C. tablet computers
- D. micro computers
In BASIC, REM shows a statement to be
- A. executable statement
- B. un-executable statement
- C. comment
- D. output
The computer that combines the functions of both analog and digital computers is called ?
- A. Digital computer
- B. Analog computer
- C. Hybrid computer
- D. multipurpose computer
Computers manipulate data in many ways, and this manipulation is called ?
- A. batching
- B. utilizing
- C. processing
- D. upgrading
Which of the following monitors has only two colours
- A. colour monitor
- B. colour graphic adapter (CGA)
- C. dichrome monitor
- D. monochrome monitor
which communication channel allows the sending of information in one direction only?
- A. simplex mode
- B. half duplex mode
- C. duplex mode
- D. full duplex mode
Which of the following is an example of graphics software ?
- A. Microsoft word
- B. Adobe Illustrator
- C. Microsoft powerpoint
- D. MS Access
___ is the type of computer that is designed to operate on two states, 0 and 1.
- A. Analog computer
- B. Hybrid computer
- C. Digital computer
- D. micro computer
The term used to describe when new information replaces old information or data is
- A. file loss
- B. delete
- C. re-write
- D. overwrite
Which of these programming languages is the most suitable for a business data processing?
- A. BASIC
- B. ALGOL
- C. COBOL
- D. FORTRAN
The process where a programmer converts a program specifications into computer instructions is called ?
- A. Debugging
- B. Coding
- C. Testing
- D. System design
The diagrammatic representation of an algorithm is
- A. pseudocodes
- B. codes
- C. graphics
- D. flowchart
Which of the following allows devices on one network to communicate with devices on another network ?
- A. T-switch
- B. gateway
- C. modem
- D. multiplexer