IB CS QUESTIONS AND ANSWERS

• What are the two methods of implementation compared in the study material?

  Direct changeover and parallel running
• What is one advantage of direct changeover?

  There is no extra cost
• What is a disadvantage of direct changeover?

  There is not a second system to fall back on
• What is a benefit of parallel running?

  Benefits can be gained immediately
• What is a potential issue if there is a bug in the new system during direct changeover?

  It could be disastrous for the company
• What is required from employees when implementing a new system?

  Employees will need to be capable of using the new system immediately
• What data do customers need to provide when registering with the company?

  Name, date of birth, age, gender, and email address
• What ethical issue arises when sharing customer data with marketing organizations?

  The company needs to gain permission from customers
• What must customers be informed about regarding their data?

  Customers must be informed about all uses that will be made of data
• What is one method of implementation mentioned in the study material?

  Phased conversion
• How does phased conversion differ from direct changeover?

  Phased conversion introduces the new system one step at a time
• What is an advantage of phased conversion?

  It is less risky than direct changeover
• What is a disadvantage of phased conversion?

  It takes a lot of time
• What is one type of testing that involves users?

  User acceptance test
• What is one consequence of inadequate testing?

  Can lead to undiscovered bugs in software
• What is a social issue associated with the introduction of a new computer system?

  The new system might be designed to replace some staff
• What is one usability factor to consider when designing a website?

  Readability/comprehensibility
• Why can visual displays on a computer screen create difficulties for some people?

  Accessibility issues arising from visual/hearing impairments
• What is one cause of data loss?

  Natural disasters
• How can offsite storage prevent data loss?

  It can automatically back up data files to a remote server
• What is one reason for releasing a software update?

  To patch any vulnerabilities
• What does usability mean in the context of computer systems?

  Making the computer systems easy to use and matching them to user needs
• What is one method to improve the accessibility of a computer system?

  Voice recognition
• What is one type of documentation that should be provided with software?

  Technical documentation
• What is one method of delivering user training?

  Formal classes
• Why is it useful to produce more than one prototype of a new system?

  It allows for user feedback and improvements
• What is one problem that may occur when transferring data from the old system to the new system?

  Data may be lost during the transfer
• How many shop assistants serve customers in the hardware shop?

  15 shop assistants
• How many office staff handle the administration in the hardware shop?

  3 office staff
• What is the role of users in the process of developing a new computer system?

  Users provide feedback and requirements for the system
• What is one consequence of inadequate testing in software development?

  Can lead to end user dissatisfaction
• What is one ergonomic standard that must be considered with a new computer system?

  Physical safety of all users
• What is one ethical consideration when implementing a new computer system?

  Human dignity of all users
• What is one issue related to the complexity of visual displays on a computer screen?

  Visual display design is not logical
• What is one accessibility issue that can arise from visual displays?

  People with poor eyesight may have difficulties to distinguish
• What is one reason why workflows should be simple in visual display design?

  To require as few interactions as possible to complete
• What is one issue that can arise from inconsistent visual display design?

  Navigation, header, footer, and main content are not always in the same places
• What is one consequence of having too many errors in a visual display?

  It can lead to user frustration
• What is one way to improve the usability of a website?

  Ensure tools are easy to use
• What is one issue that can arise from using alternative browsing devices?

  Users may have difficulties due to slow network connections