Unit 23 - Event Driven Programming

Which of the following is FALSE about Event driven programming?

• Event driven programs can be run multiple times with different outcomes based on user interactions

• The flow of event driven program cannot always be known ahead of time

• Event driven programs do not implement algorithms

• Some portion of an event driven program may never execute while the program is still running

What are trigger functions in event driven programming?

• trigger functions are functions that save the properties of an event driven program

• trigger functions are executed when the user right clicks only

• trigger functions choose which event handler needs to be ran for the event

• trigger functions play the same role as event handlers

Which of the following is an example of timed event?

• Submit button on a form clicked

• User typing into a text field

• Changing the selected item in the list

• Alarm ringing everyday

What is the difference between event loop and event handler?

• Event handlers are executed when more than one events occur whereas event loop is executed when one event occurs

• Event handlers are lines of code executed when an event occurs where as event loop are lines of code that keep on checking for an event to occur

• Both of them play the same role

• Event loops are lines of code executed when an event occurs where as event handlers are lines of code that keep on checking for an event to occur

Which of the following is NOT a feature of object oriented programming?

• Data Abstraction

• Inheritance

• Time Driven

• Classification

The following statements describe the features of an event-driven program. Three of them are true and one is a lie. Which one is a lie?

• It responds to events.

• It always follow one flow of control

• It is service oriented

• It uses event loops

Which one of the following is not a computing event?

• Mouse Click on the login button

• Key Press on the register form

• Tap on Button "Twitter" on the Phone

• Time taken for the application to run

Which one of the following is not Time Driven?

• Alarm running on a computer desktop

• Automatic Backup of whatsapp

• Automatic Update of the OS in phone

• Login Method running when user taps on login button

Event handlers are...

• response to a computer event

• block of code that runs when a designated event runs

• Method containing statements that are executed when an event occurs

• All of the above

A programming structure that continually tests for external events and calls the appropriate routines to handle them

• Event Handler

• Trigger Functions

• Event Loop

• All of the above