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Learn about software errors and troubleshooting methods of solving them. Based on the 2016 OCR Cambridge Technicals Level 3 IT specification. 2.6 - Software Troubleshooting Exam Board: OCR Specification: 2016 - Unit 1 A software error occurs when a program or process stops working as expected. Software errors usually occur when programs are badly written or if a user inputs unexpected data . Common Faults System Freeze The computer freezes and pressing keys or moving the mouse gives no response . Commonly caused by having too many applications running simultaneously or a virus using too much memory . Unexpected Reboot To try and fix errors, a computer might get stuck in an endless loop of booting and rebooting . Other systems may frequently restart without warning . Stop Error This occurs after a fatal system error when the operating system stops , usually because of a driver software issue . Commonly known as the 'blue screen of death ' on Windows-based systems. Update Error While designed to fix errors, updates can sometimes bring more problems if they interfere with the current software . Troubleshooting Tools for Software Errors Event Viewer (Logs) If a software error does occur, then the same characteristics as a hardware error should be logged , such as the time and date of the error , the user logged in , and the device's problem history . Memory Dump Copies and displays the contents of RAM at the time of a crash to help a technician discover what happened . Baselines Before After A comparison of what the system is like after a crash compared to a fixed point in time beforehand. The baseline can be used to see differences which may have caused the computer to fail . Anti-Virus Checks if malware is running on a device, using up resources and slowing the system down. It could then be quarantined and deleted by the anti-virus. Installable tools can also be downloaded to investigate the system and find the cause of the problem . They may help detect corrupted files , uncover deleted files , and resolve other general hardware or software issues . Q uesto's Q uestions 2.6 - Software Troubleshooting: 1. Describe each of the four common types of software error : a. System Freeze b. Stop Error c. Unexpected Reboot d. Update Error [2 each ] 2. Describe each type of troubleshooting tool and explain how it can be used to discover and fix software errors. a. Event Viewer b. Memory Dump c. Baselines d. Antivirus Software e. Installable Tools [ 2 each ] 2.5 Communication Methods Topic List 2.7 - Protocols

Learn about the characteristics of information and the impacts of both good and poor quality information on customers and stakeholders. Based on the 2016 OCR Cambridge Technicals Level 3 IT specification for Unit 2 (Global Information). 2.3 - Quality of Information Exam Board: OCR Specification: 2016 - Unit 2 Information Characteristics Valid Information This is correct, up-to-date and complete information that fits its purpose . For example, detailed end-of-year financial data in the form of graphs. Biased Information This is technically correct, but slanted , information that presents a one-sided view . For example, end-of year financial data that focuses on profits and ignores significant losses. Relevant Information Information should be appropriate for the required purpose . Irrelevant information may get in the way of correct decision making. Accurate Information Information should be carefully selected and entirely correct , inaccurate information can lead to unwanted consequences such as higher costs and missed deadlines. Reliable Information Information from a source that can be verified and confirmed to be correct . For example, BBC News is a more reliable information source than social media posts. Information Quality The quality of information that an organisation uses will have a significant impact on further processes and decisions. Good quality information that is accurate , valid or reliable can lead to better strategic decisions , meeting deadlines and innovation . Poor quality information that is biased , inaccurate or out of date may lead to negative consequences such as loss of customer trust , fines and legal challenges . Positive Effects of Good Quality Information Reliable information received by the management team . Good quality research information. Good quality sales information. Accurate cost projection information. Informed decisions with a higher chance of success . Can lead to innovation and better understanding . Strategic decisions and planning ahead . Projects will stay within their budget . Accurate time expectations . Projects will be completed on time . Negative Effects of Poor Quality Information Biased survey with inaccurate results . Inaccurate stock information. Out of date information received by management . Inaccurate data has led to poor reviews online . Inaccurate time expectations . Misinformed decisions , not responding to customers needs . ??? Inaccurate delivery times , customers unhappy . Too much / little stock. Miss out on opportunities , possible fall in profits . Loss of customer trust , loss of customers and reputation . Financial issues . Projects take longer , cost more , stakeholders unhappy . Possible project failure . Q uesto's Q uestions 2.3 - Quality of Information: 1. Describe 5 characteristics of information . [10 ] 2. Explain 5 positive impacts of good quality information . [10 ] 3. Explain 5 negative impacts of poor quality information . [10 ] 2.2 - Information Classification 2.4 - Information Management Topic List

The homepage for all content aimed at Key Stage 3 students studying Computer Science / IT including computer hardware, Python, App Inventor 2 and Cyber Security. Key Stage 3 Topics These topics are aimed at Year 7 - 9 students (11 - 14 year olds) studying computing. Hardware The Motherboard The CPU Memory Expansion Cards Python Basics 1. The Basics 2. Variables 3. Inputs 4. Calculations 5. Selection 6. Turtle 7. Link to GCSE Python Cyber Security Malware Phishing & Staying Safe Other Topics Desktop Publishing

Learn about data formats such as ASCII, Unicode, CSV, fixed-width, JSON and XML and data types, including Boolean, character, date, integer, real and string. Resources based on Unit F161 (Developing Application Software) for the OCR Cambridge Advanced Nationals in Computing (H029 / H129) AAQ (Alternative Academic Qualification). Qualification: Cambridge Advanced Nationals in Computing (AAQ) Certificate: Computing: Application Development (H029 / H129) Unit: F161: Developing Application Software 2.1 - Data Formats & Types Watch on YouTube : Data Formats Data Types You need to know the characteristics , uses , advantages and disadvantages of six data formats (ASCII , Unicode , CSV , fixed-length , JSON and XML ). You also need to know the characteristics , uses , advantages and disadvantages of six data types (Boolean , character , date , integer , real and string ). What You Need to Know Data Formats ? YouTube video uploading soon Data Types ? YouTube video uploading soon Q uesto's Q uestions 2.1 - Data Formats & Types: 1. What? [2 ] 2. What? [1 ] 3. What? [1 ] 4. What? [1 ] ? D id Y ou K now? 1.3 - Storage Topic List 2.2 - Data Flow

Homepage for learning about computer science in school. Discover topics across GCSE and Level 3 IT subjects, plus programming languages including Python, HTML and Greenfoot. C omputer S cience Newb ie s Popular topics: Python Programming Application Development OCR Cambridge Advanced National in Computing (AAQ) A-Level Computer Science You are viewing the mobile version of CSNewbs. The site will appear better on a desktop or laptop . OCR A-Level (H446) GCSE Computer Science OCR GCSE (J277) Latest YouTube Video Latest Blog Post Links & Information YouTube Channel Last updated: Thursday 4 th June 2026 Millions of visits since 2017! About CSNewbs

Learn about each of the 8 stages of data analysis including exactly what should occur at every stage. Based on the 2016 OCR Cambridge Technicals Level 3 IT specification for Unit 2 (Global Information). 3.4 - Stages of Data Analysis Exam Board: OCR Specification: 2016 - Unit 2 Data analysis is the process of identifying and collecting data to be viewed and modelled, in the aim of discovering patterns or trends that can be used for conclusions and decision-making. 1. Identify the need Before anything else can take place, objectives are set for what the data analysis will hope to achieve. Aims must be clear and well defined . For example, an organisation should define what information will be needed and what exactly they want to find out by the end of the process (the purpose of the data analysis). Not clearly defining the required information or purpose could lead to worthless results and a waste of the entire data analysis process. 2. Define the scope In this stage the restrictions of the project are defined. Scope includes factors such as budget , content , detail , timescales (deadlines) and any further constraints . 3. Identify potential sources Project planners must identify a wide range of sources for the potential information, ensuring that it is unbiased and covers the objectives . The specific data will depend on the project but it could include sales figures or customer surveys for example. 4. Source and select information Information is gathered from the identified sources in stage three. Any unsuitable data is excluded so that results are not unreliable as poor quality information can lead to numerous negative consequences . Planners will have to determine the accuracy and reliability of any identified sources and select the best . 5. Select the most appropriate tools There are many different data analysis tools that can be used as part of this sequence; in this stage the most appropriate tool for the project is selected. Examples include methods of presentation such as charts and graphs for a visual representation of data . Regression analysis can also be used - regression is the determining of relationships e.g. if the amount spent on advertising bottled water increases, will consumption increase too or are other factors involved? If there is a link, a business can continue to spend more on advertising if consumption and profit also rises. Trend analysis is another option - this shows patterns over time , for example, bottled water consumption each year over the past decade. 6. Process and analyse data Data has now been collected and can be inputted into software such as spreadsheets or databases to further analyse. Putting collected data into a spreadsheet for example allows for analysis to begin as graphs can be created from the data and any patterns or trends discovered. 7. Record and store information The data has been collected and analysed and now any findings are written into a report . Any patterns, trends or findings can be described with statistical evidence generated from the analysis. 8. Share results A report is worthless if not shared with the stakeholders . Sharing can take different forms such as a typed document posted out to stakeholders, an email with major findings summarised or as a post on a website . Q uesto's Q uestions 3.4 - Stages of Data Analysis: 1. List the 8 stages of data analysis in order. [8 ] 2. A supermarket chain called 'Fresh Food UK' wants to complete data analysis to see which stores across the country have been most profitable in the last year . Explain how Fresh Food UK would use each of the 8 stages of data analysis . [16 ] 3.2 & 3.3 - Information Categories Topic List 3.5 - Data Analysis Tools

An explanation and introduction to the OCR Level 3 Cambridge Advanced National in Computing specification. This certificate (H029) or extended certificate (H129) is an Alternative Academic Qualification (AAQ). Level 3 Alternative Academic Qualification (AAQ) / Cambridge Advanced National In Computing Computing: Application Development Everything you need to know about this course: The Cambridge Advanced National in Computing: Application Development is a new course that began in September 2025 . It contains both exam and NEA (coursework ) units and focuses on developing software prototypes for applications such as websites , video games and even virtual reality . The video to the left explains all the key details of this new course, but remember, things can change so the OCR website will have the latest updates . Exam Units: Unit F160: Fundamentals of Application Development F160 YouTube Playlist Unit F161: Developing Application Software F161 YouTube Playlist These pages are based on content from the OCR Cambridge Advanced National in Computing (AAQ) specification .

Learn about how information can be categorised for both individuals and organisations. Based on the 2016 OCR Cambridge Technicals Level 3 IT specification for Unit 2 (Global Information). 3.2 & 3.3 - Information Categories Exam Board: OCR Specification: 2016 - Unit 2 Categories of Information for Individuals Communication Texting a friend about dinner plans, sending an email to a family member in another country, ringing work because trains are delayed. Education and Training Revision textbooks, logging into a virtual learning environment to upload a completed worksheet, hand-written feedback sheets from a teacher after an exam. Planning Using a shared document to arrange meeting dates, using a webpage hosting a bus timetable, a calendar app. Financial Using a bank statement to plan holiday saving, creating a spreadsheet of expenditure this month, logging in to a secure web page to buy a present online. Entertainment Reading a film review in a magazine, listening to a podcast about trains, watching a tutorial on DIY. Research Using online encyclopedias for a school project, searching for research articles to write an essay, using a recipe book Location Dependent Find local pizza restaurants, searching for emergency dental care on holiday, Pokemon GO Categories of Information for Organisations Knowledge Management & Creation Managing information across an organisation e.g. sharing information between branches in different cities. Management Information Systems (MIS) A system that provides an overview of key information e.g. the location and contact details of each charity worker in a disaster area. A decision can be made on overall figures or individual data as appropriate. Financial Analysis & Modelling Analysing trends e.g. determining the top selling products in a year or weekly cash flow, to create models of customer/user behaviour. Contact Management Managing contact between a business and the customer e.g. tracking appointments at a doctor’s surgery. Internal and External Communication Providing a communication medium to staff and/or customers e.g. posting Christmas opening times on the website, or sending a staff email invite to the Christmas party. Big Data Any data too large or complex for traditional data analysis techniques to be used e.g health data on the population of an entire country. Marketing, Promotion & Sales Identifying patterns or trends in sales figures, so that certain products or areas can be targeted, e.g. to plan marketing campaigns. Decision Making Using available information to make decisions, e.g. a charity deciding on the amount of aid to be sent to a disaster area based on local data. Q uesto's Q uestions 3.2 & 3.3 - Information Categories: 1. Describe two examples of each category of information used by individuals : Communication Education & Training Entertainment Planning Financial Research Location Dependent [2 each ] 2. Describe two examples of each category of information used by organisations : Knowledge Management & Creation Management Information Systems (MIS) Marketing, Promotion & Sales Financial Analysis & Modelling Contact Management Decision Making Internal & External Communication Big Data [2 each ] 3.1 - Data vs. Information Topic List 3.4 - Stages of Data Analysis

Learn about different types of human computer interaction (HCI) such as audio, movement / gesture, touch and visual (command line and graphical user interface (GUI)). Based on Unit F160 (Fundamentals of Application Development) for the OCR Cambridge Advanced National in Computing (H029 / H129) (AAQ - Alternative Academic Qualification). Qualification: Cambridge Advanced National in Computing (AAQ) Unit: F160: Fundamentals of Application Development Certificate: Computing: Application Development (H029 / H129) 5.1.1 - Types of Human-Computer Interaction Watch on YouTube : Human-Computer Interaction Human-computer interaction (HCI) refers to the ways in which users engage with computers and is an important factor that must be considered when designing and developing an application . For each type of HCI you need to know its purpose , devices on which it is used , its advantages and disadvantages and how client requirements may affect its use . Human-Computer Interaction Types of User Interaction Audio allows users to interact with a system using voice commands . Body movements or gestures (e.g. hand waves or head turns ) can control or interact with applications . Touch allows users to interact by tapping , swiping , dragging or pinching directly on a screen . Graphical user interfaces ( GUIs ) provide a visual interface using windows , icons , buttons and menus . Command-line interfaces ( CLIs ) only allow interaction with the system by typing text commands into a terminal or shell . Q uesto's Q uestions 5.1.1 - Types of Human-Computer Interaction: 1. A company selling toys wants to create an app to advertise its latest products . Justify the suitability of each user interaction type for the company's app . [5 ] 2. Compare the GUI and CLI visual interaction methods, including their advantages and disadvantages . [8 ] 3. Explain when the audio interaction method would be appropriate . [ 3 ] In 2012 Milwaukee County Zoo started giving iPads to orangutans so they could use the touchscreen to draw pictures . D id Y ou K now? 4.3 - Decomposition Methods Topic List 5.1.2 - Types of Device

Learn about 11 key attributes that a respected and successful member of staff should develop in a work environment. Based on the 2016 OCR Cambridge Technicals Level 3 IT specification. 4.3 - Personal Attributes Exam Board: OCR Specification: 2016 - Unit 1 Any employee in an organisation must demonstrate positive qualities that makes them a useful worker . The following are some of the key attributes that a successful employee of an IT organisation should have. Self-motivation: Workers must be able to motivate themselves to produce high-quality work . They must arrive to work willing to face new challenges and retain a good attitude even when faced with difficulties. Leadership: Managers must show good leadership skills by respecting members of their team so that they are motivated and produce good work. A leader must delegate tasks and take responsibility for negative outcomes. Respect: Respect must be shown at all times to other members of staff and to customers . Employees should be polite and patient when dealing with requests and uphold the company's values . Dependability: Managers must be able to depend on their employees to complete work to the best of their ability and complete it on time . Employees should also be trustworthy and reliable to work on tasks independently. Punctuality: Arriving to work on time is important and shows a commitment to your job . Employees must show up on time to meetings and scheduled events so they don't miss out or upset others. Problem Solving: An employee must be able to look at a problem from different angles and perspectives in order to solve it. Workers must use logic and learn from previous mistakes . Determination: Workers should be focused on their job role and not give up on challenging tasks. Workers must be prepared to work on a dedicated task until it is fully completed . Independence: Workers should be able to work alone on tasks and not rely on other members of staff . They should be confident in finding a solution to a problem independently. Time Management: Most tasks will have a deadline and it is the worker or team's responsibility to ensure all work is completed before that date. Workers must be organised and plan ahead in case of unforeseen circumstances. Team Working: Most modern IT jobs involve group work , either within the office or using online communication across different sites. Workers must cooperate with their peers, share ideas and work together to complete tasks on time. Numerical Skills: Maths skills are required in IT jobs to ensure that jobs are completed accurately and within the budget . Workers may use calculators or spreadsheets to prevent mistakes. Verbal Skills: Spoken communication is a huge part of most jobs, whether that be face-to-face , on the phone or through video calls . Workers must be polite to customers and respectful to co-workers , using appropriate language at all times. Planning & Organisation: To ensure all deadlines are met , teams must carefully plan who will complete each task and by when. Companies must be well organised so that departments can work together and share information when necessary. Q uesto's Q uestions 4.3 - Personal Attributes: The Job Roles section (4.5 ) may help you answer these questions. 1. A games company are looking to hire a new manager to oversee the development of their next video game. Describe 4 personal attributes that the manager should have. [10 ] 2. A software company that develops web browsers is hiring a new programmer . Describe 4 personal attributes that the programmer should have. You must not describe the same attributes as Q1 . [10 ] 3. An animator is required at a large design and movie production studio. Describe 4 personal attributes that the animator should have. You must not describe the same attributes as Q1 or Q2 . [10 ] 4.2 - Communication Technology Topic List 4.4 - Ready for Work

Learn about business systems used by IT companies including MIS, SOP, CRM and help desk. Based on the 2016 OCR Cambridge Technicals Level 3 IT specification. 3.5 - Business Systems Exam Board: OCR Specification: 2016 - Unit 1 A business may use several types of complex systems to manage data , communicate with customers and ensure efficient business practice . Management Information System (MIS) A management information system (MIS ) is used to collect , store , analyse and present data for an organisation. The system processes a large amount of data and organises it (such as in databases) so that it can be used for decision-making and general data analysis . An efficient MIS can be used to display the financial status of an organisation, highlight areas of improvement and generate sales forecasts based on current data. Specifically, a bank could use an MIS for: Looking at the number of customers that visit each branch . Forecasting potential profits based on historical data of previous years. Profiling customers based on their actions and behaviour . Identifying specific customers with low activity to target them for email campaigns . Benefits of an MIS: Integrated system: A Management Information System shares a large amount of data from multiple departments within an organisation to produce accurate reports. For example, financial data can be used to generate accurate pay slips. Decision Making: An MIS can be used to inform an organisation's decision making by highlighting areas that need improvement within the company. Powerful analysis: An MIS will use large data sets to provide accurate data analysis that can be used in many different ways by an organisation. Trends and patterns can be identified easily. Backup capabilities: Data can be stored centrally and backed up easily if a disaster occurs. Limitations of an MIS: Cost and installation: An MIS is an expensive tool that needs to be professionally set up and requires technical knowledge to maintain. Requires accurate data: If any data is incorrect or out of date then the analysis will consequently be inaccurate . Potentially disastrous decisions could be made as a result of incorrect data. Training: Employees will need to be trained to use the software accurately for maximum efficiency. Customer Relationship Management (CRM) A CRM system is used to improve the relationship between an organisation and its customers . It can be used to increase customer loyalty with those who already subscribe to their services as well as used to try and increase the customer base by attracting new customers. The ultimate goal of a CRM system is to increase and retain customers which will result in more sales and higher profits . Examples of CRM systems: Marketing teams tracking which promotions customers are responding well to . Customer service teams responding quickly to customer complaints , through a variety of channels (such as social media, emails and telephone calls). Marketing teams rewarding customers who have spent a certain amount in a year. Standard Operating Procedures (SOP) A standard operating procedure is a comprehensive step-by-step guide of how to carry out a business routine. An organisation will create an SOP to abide by legal requirements and high company standards . SOPs must be followed in exactly the same method each time and by each employee to ensure the same outcome and remove any inconsistencies . Benefits of Standard Operating Procedures: Ensures consistency: The outcome should be the same each time when following SOPs which ensures an efficient result . Fewer errors: If all employees follow the SOP carefully then there should be no errors . Meets legal requirements : The SOPs will be designed to meet up-to-date legislation as well as any standards that the company have set. Limitations of Standard Operating Procedures: Inflexible practice: A lot of time may be spent on creating the paperwork and admin instead of the actual job. Legal updates: The SOPs must be periodically reviewed and updated to take into account any new laws . Sales Ordering Process (SOP) This is the process of a customer buying a product or service and the company reviewing the purchase . A sales order process ( SOP ) is important as it creates a clear plan for ordering a product . Each department can use the sales order to know exactly what jobs to perform. Help Desk Help desk software is used to provide real-time support to a user from a trained member of staff to overcome a technical problem . The customer logs an issue in the form of a ticket and is assigned a technician . As the technician tries to communicate with the user and solve the issue they must follow a service level agreement that defines the high standards the technician must keep to. When the problem has been solved the ticket is closed . All tickets are archived so that persistent problems can be checked to see what worked previously . If Help Desk software is used within a company by employees (rather than with external customers) to report and solve issues, it is known as ' in-house ' . Benefits of Help Desk software: Keeping Track: C ustomers can see that their issues are being dealt with and administrators have clear records of the problem. Audit Logs: All tickets are archived so if a problem occurs on the same machine the previous solution can be attempted again . Communication : Formal messages between the customer and the administrator mean there are no mixed messages and a running dialogue can take place as the problem is fixed. Limitations of Help Desk software: Cost : Setting up the necessary software and hardware and paying for an administrator to run the system can cost a large amount of money. Availability issues: A technician might not be available 24/7 or during holidays. Formal structure: This is a formal system that takes time to record and respond to which might annoy staff when it is only a minor issue to be fixed, like resetting a password. Knowledge: Technicians need technical expertise regarding the company's computer systems and need to be able to fix both hardware and software issues. This might require additional training every few years. Ticket Response Time: Administrators must ensure that all tickets are read and responded to in reasonable time so that productivity in the company is not affected. Q uesto's Q uestions 3.5 - Business Systems: 1a. What is the purpose of an MIS ? [ 2 ] 1b. Describe 3 ways a bank could use an MIS . [ 3 ] 1c. Describe the benefits and limitations of an MIS . [10 ] 2a. What is the purpose of a CRM ? [ 4 ] 2b. Describe 3 ways that a CRM could be used by a company . [6 ] 3a. What are standard operating procedures (SOP ) and why are they used? [ 4 ] 3b. Describe the benefits and limitations of SOPs . [ 10 ] 4a. What is the sales ordering process ( SOP )? [ 2 ] 4b. Why is the SOP important in a company? [ 2 ] 4c. Summarise the 3 stages of the SOP . [ 4 ] 5a. What is the purpose of help desk software? [ 2 ] 5b. Explain how help desk works , including tickets , technicians and service level agreements . [3 ] 5c. Describe the benefits and limitations of Help Desks . [ 10 ] A typical sales order process will work as follows: 1. The customer orders a product or service, usually via an email or telephone conversation . 2. The order is confirmed and a sales order is created. This is a document that lists the customer’s requirements and exactly what they have purchased . 3. The sales order is sent to the relevant departments (e.g. production , finance and delivery ) so they can fulfil the customer’s request . Once the order has been completed, the customer will be sent an invoice for payment . 3.4 - Connection Methods Topic List 4.1 - Communication Methods

Learn about application platforms such as augmented reality (AR), virtual reality (VR) and mixed reality (MR), websites and computer games. Resources based on Unit F161 (Developing Application Software) for the OCR Cambridge Advanced Nationals in Computing (H029 / H129) AAQ (Alternative Academic Qualification). Qualification: Cambridge Advanced Nationals in Computing (AAQ) Certificate: Computing: Application Development (H029 / H129) Unit: F161: Developing Application Software 1.1 - Application Platforms Watch on YouTube : Reality Platforms Websites Computer Games There are three types of application platforms you need to know, starting with devices based around merging technology and reality -augmented reality (AR ), virtual reality (VR ) and mixed reality (MR ). You also need to understand how websites and computer games are used as application platforms . You need to know the uses of these application platforms as well as their advantages and disadvantages . What You Need to Know Augmented Reality / Virtual Reality / Mixed Reality Augmented Reality (AR ) is technology that overlays digital images or information onto the real world . Virtual Reality (VR ) uses a computer-generated 3D environment that fully immerses the user , usually with a headset . Mixed Reality (MR ) is a blend of AR and VR where digital objects interact with the real world in real time . AR , VR and MR devices have a wide range of uses , the main three being educational , instructional and for research . Websites Websites can be used as platforms to deliver applications directly through a web browser , removing the need for users to install software on their device . This allows applications to be accessed easily across different devices and operating systems using an internet connection . There are four categories of websites to know: E-Commerce Instructional Educational Social Media Computer Games Computer (video ) games can be used as application platforms by combining software functionality with interactive gameplay and immersive environments . Games can increase user engagement and allow complex ideas , simulations or training activities to be delivered in a more intuitive and motivating way. Games are highly engaging , increasing user motivation and time spent using the application but game development is often complex , time-consuming and expensive , requiring specialist skills in a range of job roles . Q uesto's Q uestions 1.1 - Application Platforms: 1. Give the key features and uses for each reality-based device - AR , VR and MR . [4 marks each ] 2. Give three advantages and disadvantages of using a website as an application platform . [6 ] 3. A school is considering making a computer game application to encourage students to learn about rainforests . Consider two advantages and disadvantages of using computer games as an application platform in this scenario . [4 ] There are over 1 billion websites on the internet , but fewer than 20% are actively maintained , meaning most websites are abandoned , inactive or placeholder pages . D id Y ou K now? Topic List 1.2 - Devices