3(a) Table 1 shows the actions perfomed by a company on its stored files.
Tick the actions that will ensure that the files are kept confidential and secured
| S/N | ACTIONS | TICK |
| 1 | use of anti virus | |
| 2 | use of backup | |
| 3 | use of biometrics | |
| 4 | use of folder | |
| 5 | use of manual file | |
| 6 | use of password |
(b) list two disadvantages of computer files as compared to manual files.
(c)(i) define charts as its relates to Ms Excel
(ii) give two types of charts in Ms Excel
2(a) Use appropriate labelled diagrams to illustrate the following network topologies.
i Startopology (ii) bustopology (iii) ring topology.
(b) State one advantage of: i Star topology ii Bus topology.
(c) Give one disadvantage of: (i) Bus topology: (i)Ring topology.
[a] Define the term output device.
[b] Give the two types of printers.
[c] [i] Construct a truth table for an AND gate with two input signals.
[ii] State the output of an OR gate with the signals 0 and 1.
[d] list two types of an logic gate that gives an output of 1 when all of its input signals are 1.
Ethical practice requires a computer user to
- A. shutdown properly
- B. hack into other peoples computer
- C. intrude into peoples privacy
- D. copy software without the license
Duplicating copyrighted electronic or digital content without the authors approval is considered?
- A. felonious
- B. ethical
- C. treasonable
- D. unethical
Serial files are
- A. stored using a key
- B. sorted in a particular order
- C. stored as they come
- D. stored in any storage media
The file access method illustrated in the diagram above is called?
- A. hashed access
- B. indexed access
- C. random access
- D. sequential access
Sequential files are?
- A. sorted using index
- B. sorted in a particular order
- C. stored as they come
- D. stored in any storage media
The octal fraction 0.65 converts to binary as
- A. 0.110011
- B. 0.110101
- C. 101101
- D. 101101
Add 127\(_{16}\) to 50A\(_{16}\)
- A. 629\(_{16}\)
- B. 630\(_{16}\)
- C. 631\(_{16}\)
- D. 632\(_{16}\)
In number system ,base 16 is called ?
- A. hexadecimal
- B. decimal
- C. duodecimal
- D. octal
Select two stages of booting from the following list:
i. Power on Self Test;
ii. Loading of Operating System;
iii. Loading of e-mails;
iv. Start in safe mode.
iv. Save all active files
- A. I and II only
- B. I and III only
- C. II and IV only
- D. III and IV only
The keyboard key combination ALT + F4 in microsoft windows will
- A. close active programmes
- B. open a file
- C. restart the computer
- D. Select two stages of booting from the following list
Deleted items in the computers are temporarily stored in the?
- A. memory unit
- B. processor
- C. recycle bin
- D. task manager
The pictorial representation of an object or application in the computer is called?
- A. diagram
- B. graphic
- C. Icon
- D. image
If A is in cell A1 and B is in Cell B1 of a worksheet in a spreadsheet application,write a formula to calculate
x= \(\frac{A^2 = B{^1/2}}{100}\)
- A. ((A1^2)+(B1^(1/2)))/100
- B. ((A1^2)+(B1^(1/2)))/100
- C. ((A1^2+(B1^(1/2))/100
- D. ((A1^2)+(B1^(1/2)))/100
What will be the result of writing the formula=year[now[][ + 3 in a worksheet,of a spread sheet,if the current calendar is 14 august ,1960?
- A. 17 august 196003
- B. 14 aug,1963
- C. 11 august,1963
- D. 1963
Which of the following operations will not run a slide show in MS PowerPoint?
- A. pressing F5
- B. pressing shift +f5
- C. choosing the slide show tab
- D. clicking on the slide show icon bar
The part of the Corel Draw window labelled II in the diagram above is called?
- A. zoom in
- B. pan
- C. zoom out
- D. zoom to fit
The shortcut key for the open dialog box in MS Word is ?
- A. Alt + F12
- B. Ctrl + F12
- C. F12
- D. shift + f12
One function of operating system is ?
- A. power supply allocation
- B. file corruption and deletion
- C. flowcharting
- D. resource allocation