Waec 2021 Computer Past Questions And Answers
Which of the following statements about URL is true? It is
- A. a computer software program
- B. a type of web server
- C. an acronym for unlimited resources for learning
- D. the address of document or 'page' on the world wide web
The screen background where icons and windows are displayed is GUI is called
- A. explorer
- B. desktop
- C. opening screen
- D. homepage
The type of network represented in Figure 7 is called
- A. LAN
- B. MAN
- C. PAN
- D. WAN
Which of the following formulas will display the current seconds past the minute os the clock in MS Excel?
- A. =MINUTES()
- B. =MINUTES(NOW())
- C. =MINUTE(YEAR())
- D. =MINUTES(HOUR(NOW()))
The Slide Rule is accurate to
- A. 1-2 decimal places
- B. 3-4 decimal places
- C. 5 decimal places
- D. 6 decimal places
In MS Excel, the cell that contains the pointer or cursor is called
- A. active cell
- B. current cell
- C. default cell
- D. passive cell
Data created by the user is called
- A. primary data
- B. qualitative data
- C. quantitative data
- D. secondary data
The figure 2 in the number 11012 is indicated in MS Word using a feature called
- A. superscript
- B. subscript
- C. root
- D. exponentiation
(a)(i) What is Universal Serial Bus (USB)?
(ii) State two benefits of using USB connection between a computer and another device.
(b) In Table 1, three storage devices are described, Use it to answer questions 3(b)(i) and 3(b)(ii).
(i) In column 2, name the storage device being described in column 1.
(ii) Show the category of storage device being described in column 1 by ticking in any of the column 3, 4 or 5
| SN | 1 | 2 | 3 | 4 | 5 |
| Description of Storage Device | Name of Storage Device | Category of Storage Device | |||
| Primary | Secondary | Offline | |||
| 1 | Magnetic storage medium which is composed of a thin flexible disk sealed in a square plastic carrier. | ||||
| 2 | Optical media - which uses one spiral track.Red lasers are used to read and write data on the media surface and it makes use of dual-layering technology to increase the storage capacity to over 1 GB. | ||||
| 3 | Non-volatile memory chip which contents cannot be altered. It is often used to store the start-up routines in a computer (e.g the BIOS). | ||||
If N in the flowchart is represented by 10, which of the following conditions is not true?
- A. If C > 10, do not pick orange.
- B. If C = 10, stop picking orange
- C. If C < 10, keep picking orange
- D. If C = 10, continue picking orange