Question 1

When creating a program that will use a GUI, the interface should be natural and predictable.

Accepted Answer

A natural and predictable interface ensures that users can easily understand and navigate the program, improving usability and user experience.

Question 2

For today's computer users, operating system software allows use of a mouse to select pictures, or ____ on the screen.
A)systems
B)prompts
C)selectors
D)icons

Accepted Answer

Operating system software allows the use of a mouse to select pictures or icons on the screen. Icons are graphical representations of programs, files, and functions that users can click on to execute commands or open documents.

Question 3

With procedure-driven programs, the user might initiate any number of events in any order.

Accepted Answer

Procedure-driven programs follow a predefined sequence of operations, meaning the program executes in a specific order as determined by the programmer, not by user-initiated events.

Question 4

From the 1950s through the 1980s, almost all interactive dialogues between people and computers took place at the ____.
A)operating prompt
B)command prompt
C)operating line
D)direction line

Accepted Answer

The correct term is "command prompt," which refers to the text-based interface used for entering commands directly to the computer's operating system or software programs.

Question 5

Computer users today typically learn new commands for each GUI interface they use.

Accepted Answer

Most GUI (Graphical User Interface) interfaces are designed with intuitive icons, menus, and buttons that follow common conventions, making it easier for users to navigate and understand different software without learning new commands for each.

Question 6

In an event-driven program, you design the screens, define the objects, and define how the screens will connect.

Accepted Answer

In an event-driven program, the design process involves creating the user interface (screens), defining the objects (such as buttons, text fields, etc.), and specifying how these elements interact or connect through events (like clicks or input).

Question 7

A(n) ____ is one of the tiny dots of light that form a grid on your screen.
A)element
B)screen dot
C)pixel
D)pix

Accepted Answer

A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device.

Question 8

When you program in a language that supports event-driven logic, you must create the GUI components you need from scratch.

Accepted Answer

In languages that support event-driven logic, there are often libraries or frameworks available that provide pre-built GUI components, so you don't have to create them from scratch.

Question 9

A single CPU can perform two tasks in the same instant.

Accepted Answer

A single CPU core can only execute one task at a time, but it can switch between tasks quickly to give the illusion of parallelism. True parallel execution requires multiple cores or CPUs.

Question 10

A button that a user can click to cause some action is an example of a source.

Accepted Answer

A button is considered a source in event-driven programming because it generates events when interacted with, such as clicks, which can trigger actions.

Question 11

When you program with event-driven languages, the emphasis is on the objects that the user can manipulate, such as buttons and menus, and on the events that the user can initiate with those objects, such as clicking or double-clicking.

Accepted Answer

Event-driven programming focuses on using events, such as user actions (clicks, key presses), to trigger specific functions or procedures. This paradigm is common in GUI applications where user interaction with interface elements (like buttons and menus) dictates the flow of the program.

Question 12

In the early days of computing, interacting with a computer operating system was difficult because the user had to know the exact syntax to use when typing commands, and had to spell and type those commands accurately.

Accepted Answer

Early computer operating systems were command-line interfaces requiring precise syntax and accurate spelling for commands, making interaction challenging for those not familiar with the specific commands and syntax.

Question 13

In a(n) ____ program, each step occurs in the order the programmer determines.
A)procedural
B)step-wise
C)ordered
D)planned

Accepted Answer

In a procedural program, the execution of instructions follows a specific sequence or order that the programmer has determined. This programming paradigm is characterized by the use of procedures or routines.

Question 14

Within an event-driven program, a component from which an event is generated is the ____ of the event.
A)action
B)start
C)opening
D)source

Accepted Answer

The component from which an event is generated in an event-driven program is referred to as the "source" of the event. This is because it originates or emits the event to which other parts of the program can respond.

Question 15

A good GUI design practice is to make sure that unavailable options are dimmed or removed.

Accepted Answer

Dimming or removing unavailable options helps to prevent user confusion and ensures a clearer, more intuitive interface by indicating which actions are currently possible.

Question 16

Performing an operation on an icon causes a(n) ____, which is an occurrence that generates a message sent to an object.
A)operation
B)event
C)trigger
D)incident

Accepted Answer

Performing an operation on an icon causes an event, which is an occurrence that generates a message sent to an object. This is a fundamental concept in event-driven programming, where actions like clicks or key presses are considered events that can trigger specific responses in the software.

Question 17

An object that is "interested in" an event you want it to respond to is a(n) ____.
A)looker
B)listener
C)watcher
D)interest object

Accepted Answer

The correct term is "listener." In programming, especially in event-driven programming, an object that is set to monitor and respond to specific events is referred to as a "listener." It "listens" for events to occur and then executes a predefined response when those events are detected.

Question 18

GUI components are often referred to as ____.
A)widgets
B)gadgets
C)nodes
D)objects

Accepted Answer

GUI components are commonly referred to as widgets, a term used to describe elements like buttons, text fields, and sliders that make up a graphical user interface.

Question 19

When writing a GUI, it is important to make the interface ____.
A)fancy
B)animated
C)exciting
D)predictable

Accepted Answer

A predictable interface ensures that users can easily understand and navigate the GUI, leading to a better user experience.

Question 20

The computer's ____ is the software that you use to run a computer and manage its resources.
A)command system
B)graphical system
C)operating command
D)operating system

Accepted Answer

The operating system (OS) is the software that manages a computer's hardware and software resources and provides common services for computer programs.

Quiz 9: Event-Driven Programming With Graphical User Interfaces

When creating a program that will use a GUI, the interface should be natural and predictable.

For today's computer users, operating system software allows use of a mouse to select pictures, or ____ on the screen.

With procedure-driven programs, the user might initiate any number of events in any order.

From the 1950s through the 1980s, almost all interactive dialogues between people and computers took place at the ____.

Computer users today typically learn new commands for each GUI interface they use.

In an event-driven program, you design the screens, define the objects, and define how the screens will connect.

A(n) ____ is one of the tiny dots of light that form a grid on your screen.

When you program in a language that supports event-driven logic, you must create the GUI components you need from scratch.

A single CPU can perform two tasks in the same instant.

A button that a user can click to cause some action is an example of a source.

When you program with event-driven languages, the emphasis is on the objects that the user can manipulate, such as buttons and menus, and on the events that the user can initiate with those objects, such as clicking or double-clicking.

In the early days of computing, interacting with a computer operating system was difficult because the user had to know the exact syntax to use when typing commands, and had to spell and type those commands accurately.

In a(n) ____ program, each step occurs in the order the programmer determines.

Within an event-driven program, a component from which an event is generated is the ____ of the event.

A good GUI design practice is to make sure that unavailable options are dimmed or removed.

Performing an operation on an icon causes a(n) ____, which is an occurrence that generates a message sent to an object.

An object that is "interested in" an event you want it to respond to is a(n) ____.

GUI components are often referred to as ____.

When writing a GUI, it is important to make the interface ____.

The computer's ____ is the software that you use to run a computer and manage its resources.