1.1 Computer Science and App Inventor Pretest

What recent technological advancements have changed the way we live and connected people globally?

• Microwave ovens and bicycles

• Personal computers and cell phones

• Televisions and typewriters

• Pencils and paper

What do computer scientists create for mobile devices?

• Paintings

• Music playlists

• Mobile applications (apps)

• Books

How do the majority of computer scientists work when designing an app's graphics and features?

• Individually without any collaboration

• In isolation from other team members

• Within teams

• By outsourcing the work to other countries

In MIT App Inventor, which drawer in the Palette contains basic components like buttons and textboxes?

• Communication

• User Interface

• Advanced Widgets

• Media

What is the purpose of the Blocks Editor in App Inventor?

• To provide a visual representation of the app's graphics

• To write code that defines the app's behavior

• To create animations for the app

• To design the user interface of the app

What is the purpose of using camelcase when naming projects in App Inventor?

• It makes the project name sound cool and trendy.

• It helps identify projects with spaces between words.

• It ensures that project names are easy to read and descriptive.

• It helps create encryption for project security.

What is the role of a "CheckBox" component in an app?

• To display a checkbox image on the screen

• To display a list of choices for the user to pick from

• To allow the user to input text

• To allow the user to toggle a true/false state

What do the question mark icons in the Blocks Editor represent?

• An error in the code that needs to be fixed

• A comment from the programmer explaining the code's purpose

• A placeholder for future code

• A warning about possible code inefficiency

What is the purpose of adding comments to code in programming?

• To confuse other programmers

• To save memory space

• To hide the code from view

• To explain the code's functionality and purpose

How can you deploy your app to a physical mobile device for testing?

• By shouting the app's code out loud

• By scanning a QR code using the App Inventor Companion app

• By connecting your device to a computer using a USB cable

• By sending the code via email to your device