OOP Week 4 - UML and Pseudo-code Quiz

Why do we create a UML class diagram before coding our Car Rental system?

• To generate code automatically in any language.

• To have a clear, high-level view of classes, their attributes, and relationships.

• To replace the need for a test plan.

• To keep all variables in the public scope.

In a standard UML class box, how are the sections typically arranged (from top to bottom)?

• Methods, attributes, class name.

• Class name, attributes, methods.

• Class name, methods, attributes.

• Attributes, methods, class name.

Which attribute is most appropriate for a Car class in a Car Rental system?

• isAvailable (boolean indicating availability)

• userPassword (the user’s password)

• globalCostIndex (applies to all vehicles at once)

• CarColourSetting (a shared static variable)

Why is it beneficial to write pseudo-code before coding?

• It clarifies the logic without being tied to specific syntax, making it easier to plan.

• It replaces comments in the final code.

• It automatically creates UML diagrams.

• It’s only useful for advanced programmers.

In a Car Rental scenario, which of the following sets of classes is a likely starting point?

• TaxCalculator, WeatherStation, PaymentGateway

• MusicPlayer, GPSNavigator, Car

• Car, User (or Customer), Manager

• DateTime, Book, Librarian

A functional requirement for a Car Rental system could be:

• “A customer can rent up to 2 cars at once, if they are available.”

• “The program must respond in under 2 seconds.”

• “Use only C++ 20 standard.”

• “Store the user password in plain text.”

If a User class needs to have multiple Car objects they’ve rented, which UML relationship is most appropriate?

• Association (User “has” multiple Cars)

• Inheritance (User extends Car)

• Composition (Car can’t exist without User)

• Realisation (User implements Car)

Which statement best describes this code?

• It automatically encrypts passwords.
  

• It demonstrates a straightforward login check, returning true only if both username and password match.
  

• It checks only the username and ignores the password.

• It’s a polymorphic method requiring multiple derived classes.

What’s the main benefit of creating a partial UML diagram at Week 3 rather than waiting until the system is fully designed?

• UML diagrams only matter at the end, so partial isn’t valid.

• A partial diagram helps refine ideas early, so you can evolve it as the design grows.

• It’s required by all compilers to run C++ code.

• It replaces the need for code comments entirely.

After creating a partial UML diagram and writing pseudo-code for the Car Rental scenario, what’s the next recommended step?

• Immediately write advanced GUIs.

• Start implementing the classes in C++, testing each function as you go.

• Submit the final project.

• Write an extensive user manual with no code examples.