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Pregunta 1 Informe
(a)(i) What is computer Ethics?
(ii) State three computer room management ethics.
(b) List five laboratory rules and regulations.
This question tests computer ethics and safe conduct in the computer room and laboratory.
(a)(i) Computer ethics. Computer ethics is the set of moral principles and rules that govern the acceptable and responsible use of computers and information, guiding what a user should or should not do (for example respecting privacy, avoiding piracy and not spreading malware).
(a)(ii) Three computer-room management ethics.
(b) Five laboratory rules and regulations.
Examination reminder: distinguish ethics (moral conduct, such as respecting privacy and not pirating software) from safety rules (physical protection, such as no liquids and careful handling); the parts of this question ask for both.
Detalles de la respuesta
This question tests computer ethics and safe conduct in the computer room and laboratory.
(a)(i) Computer ethics. Computer ethics is the set of moral principles and rules that govern the acceptable and responsible use of computers and information, guiding what a user should or should not do (for example respecting privacy, avoiding piracy and not spreading malware).
(a)(ii) Three computer-room management ethics.
(b) Five laboratory rules and regulations.
Examination reminder: distinguish ethics (moral conduct, such as respecting privacy and not pirating software) from safety rules (physical protection, such as no liquids and careful handling); the parts of this question ask for both.
Pregunta 2 Informe
Mr Okafor has a company that specializes in the production of beverages with headquarters in Abuja. He intended to monitor the sales and transactions in the company's branches across Nigeria as well as interact with his customers.
(a) Through what platform can Mr Okafor achieve his intention?
(b) What computer professional should Mr Okafor hire to design the platform in 3(a)?
(c) State two software packages needed to create the platform for Mr Okafor.
(d) If Mr Okafor decides to connect all the offices within the headquarters in abuja in a single network;
(i) What type of network is appropriate?
(ii) Mention three reasons to support his decision.
(e) Mention two transmission media that can be used to implement the network in 3(d)(i).
This scenario tests knowledge of web platforms, ICT professionals, software and computer networks.
(a) Platform. Mr Okafor can achieve his aim through a website (a web-based platform / web portal) accessible over the Internet, which lets him publish information, monitor branch sales online and interact with customers.
(b) Professional to design it. A web designer / web developer (a website programmer) should be hired to build the platform.
(c) Two software packages to create the platform.
(d)(i) Type of network to connect offices within the same headquarters building: a Local Area Network (LAN), because all the offices are confined to one site.
(d)(ii) Three reasons to support the LAN.
(e) Two transmission media for the LAN: twisted-pair (UTP) cable and coaxial cable (fibre-optic cable is also acceptable); a wireless medium such as Wi-Fi/radio waves is another option.
Examination reminder: the key word in (d) is "within the headquarters in Abuja" (one location) - that signals a LAN. Monitoring branches "across Nigeria" over the Internet is what makes a website the right platform in (a).
Detalles de la respuesta
This scenario tests knowledge of web platforms, ICT professionals, software and computer networks.
(a) Platform. Mr Okafor can achieve his aim through a website (a web-based platform / web portal) accessible over the Internet, which lets him publish information, monitor branch sales online and interact with customers.
(b) Professional to design it. A web designer / web developer (a website programmer) should be hired to build the platform.
(c) Two software packages to create the platform.
(d)(i) Type of network to connect offices within the same headquarters building: a Local Area Network (LAN), because all the offices are confined to one site.
(d)(ii) Three reasons to support the LAN.
(e) Two transmission media for the LAN: twisted-pair (UTP) cable and coaxial cable (fibre-optic cable is also acceptable); a wireless medium such as Wi-Fi/radio waves is another option.
Examination reminder: the key word in (d) is "within the headquarters in Abuja" (one location) - that signals a LAN. Monitoring branches "across Nigeria" over the Internet is what makes a website the right platform in (a).
Pregunta 3 Informe
(a) Define the term Software Maintenance.
(b) List four types of Software Maintenance.
(c) State our importance of software maintenance.
This question tests understanding of software maintenance and its types.
(a) Software maintenance. Software maintenance is the process of modifying and updating a software product after it has been delivered and put into use, in order to correct faults, improve performance, or adapt it to a changed environment.
(b) Four types of software maintenance.
(c) Four importances of software maintenance.
Examination reminder: match the type to its purpose - "fixing bugs" is corrective, "coping with a new environment" is adaptive, "adding improvements" is perfective, and "preventing future faults" is preventive.
Detalles de la respuesta
This question tests understanding of software maintenance and its types.
(a) Software maintenance. Software maintenance is the process of modifying and updating a software product after it has been delivered and put into use, in order to correct faults, improve performance, or adapt it to a changed environment.
(b) Four types of software maintenance.
(c) Four importances of software maintenance.
Examination reminder: match the type to its purpose - "fixing bugs" is corrective, "coping with a new environment" is adaptive, "adding improvements" is perfective, and "preventing future faults" is preventive.
Pregunta 4 Informe
(a) State four classes of computer based on size.
(b) Define the term Information and Communication Technology (ICT).
(c) Highlight three wys (ICT) has impacted on the society.
This question tests basic classification of computers, the meaning of ICT, and its social impact.
(a) Four classes of computer based on size. In order of decreasing size and processing power:
(b) Information and Communication Technology (ICT). ICT is the use of computers, telecommunication systems and other electronic devices to capture, process, store, retrieve and transmit information. It combines computing (Information Technology) with communication technologies such as the Internet, telephony and networking.
(c) Three ways ICT has impacted on society.
Examination reminder: when asked to classify by size, do not mix in classification by type (digital, analog, hybrid) or by purpose - the examiner wants supercomputer, mainframe, mini and micro.
Detalles de la respuesta
This question tests basic classification of computers, the meaning of ICT, and its social impact.
(a) Four classes of computer based on size. In order of decreasing size and processing power:
(b) Information and Communication Technology (ICT). ICT is the use of computers, telecommunication systems and other electronic devices to capture, process, store, retrieve and transmit information. It combines computing (Information Technology) with communication technologies such as the Internet, telephony and networking.
(c) Three ways ICT has impacted on society.
Examination reminder: when asked to classify by size, do not mix in classification by type (digital, analog, hybrid) or by purpose - the examiner wants supercomputer, mainframe, mini and micro.
Pregunta 5 Informe
(a) Use the Fig 1 to answer questions (i) to (iv)
(i) What does Fig 1 represent?
(ii) Identify two output components in Fig 1.
(iii) Give the names of the parts labelled III, VI, VII.
(iv) State one precautionary measure that should be taken to protect the setup from power fluctuations while in use
(v) Data entry into system can be achieved through the parts labelled
(vi) Mention one device that can be used to access the part labelled VII.
(b) Figures 2 and 3 represent mass storage media. Use the figures to answer questions (i) to (iv)
(i) Identify the media represented by; Fig 2, Fig 3
(ii) The transaction files of a company are to be recorded and accessed in the order which they arrive. Which of the media is most suitable for the purpose?
(iii) In which media will the stored data be accessed faster?
(iv) State the file access method for each medium
Fig. 2
Fig 3
(c) A CCTV camera system has a 300 MB storage device. Each image size is 300 kB.
(i) How many images can be stored by the CCTV.
(ii) If the storage device is full, mention one one measures that should betaken to ensure that the system continues to capture and store image without loosing already stored images.
(a) Fig 1 (a computer set-up)
(b) Figs 2 and 3 (mass storage media)
(c) CCTV storage calculation. The device holds 300 MB and each image is 300 kB. Taking \(1\,\text{MB} = 1000\,\text{kB}\):
\[ \text{Number of images} = \frac{300\,\text{MB}}{300\,\text{kB}} = \frac{300 \times 1000\,\text{kB}}{300\,\text{kB}} = 1000\ \text{images} \](c)(ii) When the device is full, back up the stored images to the cloud (or another medium) and then format the device, or replace it with a new storage device, so that capture continues without losing the images already saved.
Detalles de la respuesta
(a) Fig 1 (a computer set-up)
(b) Figs 2 and 3 (mass storage media)
(c) CCTV storage calculation. The device holds 300 MB and each image is 300 kB. Taking \(1\,\text{MB} = 1000\,\text{kB}\):
\[ \text{Number of images} = \frac{300\,\text{MB}}{300\,\text{kB}} = \frac{300 \times 1000\,\text{kB}}{300\,\text{kB}} = 1000\ \text{images} \](c)(ii) When the device is full, back up the stored images to the cloud (or another medium) and then format the device, or replace it with a new storage device, so that capture continues without losing the images already saved.
Pregunta 6 Informe
(a) A teacher asked a student to capture and print out a one-slide presentation assignment using, MS Word, showing everything on the screen.
(i) What keys or combination of keys can be used to carry out this operation?
(ii) Describe the procedure to be followed by the student in carrying out this assignment using the keyboard.
(b) A system analyst was hired to set up a computer laboratory for Bofe international School; (i) Mention three hardware devices the analyst would need to set up the laboratory.
(ii) List three database application packages likely to recommend by the analyst
(iii) State three Word processing packages likely to be installed
(c) Complete Table 1 on keyboard shortcuts.
Table 1
| S/N | Keystroke | Action |
| (i) | Page brake | |
| (ii) | Ctrl+F | |
| (iii) | F1 | |
| (iv) | Ctrl+F2 |
(a) Capturing and printing a one-slide presentation shown on the screen using MS Word.
(i) Keys/combination of keys: The Print Screen (PrtScn) key. To capture only the active window, use Alt + Print Screen.
(ii) Procedure using the keyboard:
(b) Setting up a computer laboratory for Bofe International School.
(i) Three hardware devices needed:
(ii) Three database application packages:
(iii) Three word processing packages:
(c) Completed Table 1 - Keyboard shortcuts.
| S/N | Keystroke | Action |
|---|---|---|
| (i) | Ctrl + Enter | Page break (inserts a new page) |
| (ii) | Ctrl + F | Opens the Find dialog box to search for text |
| (iii) | F1 | Opens the Help window |
| (iv) | Ctrl + F2 | Opens Print Preview |
Detalles de la respuesta
(a) Capturing and printing a one-slide presentation shown on the screen using MS Word.
(i) Keys/combination of keys: The Print Screen (PrtScn) key. To capture only the active window, use Alt + Print Screen.
(ii) Procedure using the keyboard:
(b) Setting up a computer laboratory for Bofe International School.
(i) Three hardware devices needed:
(ii) Three database application packages:
(iii) Three word processing packages:
(c) Completed Table 1 - Keyboard shortcuts.
| S/N | Keystroke | Action |
|---|---|---|
| (i) | Ctrl + Enter | Page break (inserts a new page) |
| (ii) | Ctrl + F | Opens the Find dialog box to search for text |
| (iii) | F1 | Opens the Help window |
| (iv) | Ctrl + F2 | Opens Print Preview |
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