Flex 4.5 ACE Exam (9A0-182) Free Practice Test

Question 1

You will be working with the messaging service in Adobe Data Services. Which method must be called to begin receiving events from the message service?

A. start()

B. subscribe()

C. willTrigger()

D. listen()

Correct Answer: B

Question 2

You are creating an application that will need:
An event dispatching system
A means for interested components to be notified when something changes in another object
Which design pattern should be used to create this architecture?

A. Model View Controller

B. Singleton

C. Observer

D. Command

Correct Answer: C

Question 3

You have created a Flex application that contains a custom component with the id of myComp. The Application class needs to be alerted whenever a private property named score is updated inside myComp. Which approach should be used to implement this functionality while maintaining encapsulation?

A. The score property would be changed to a public property

B. The Application class would bind to the score property in myComp

C. myComp would dispatch a custom event when score is changed

D. The Application class would add an event listener to the control updating score in myComp

Correct Answer: C

Question 4

Which statement about creating custom preloaders is true?

A. The Spark download progress bar supports text

B. A custom preloader extends the SkinnableComponent class

C. It is a best practice to implement a preloader as a SWC or ActionScript component

D. A custom preloader must be a Module

Correct Answer: C

Question 5

You are using Flex validators. Which property of the Validator class specifies the object containing the property to validate?

A. listener

B. property

C. trigger

D. source

Correct Answer: D

Question 6

You are using a Skin class with a specific component class. How is compile-time checking of the component properties enabled within the Skin class?

A. The Skin class must include a HostComponent annotation

B. Compile-time checking will automatically be enabled in any case

C. Compile-time checking will not be available in this case

D. The Skin class must include an import statement referencing the component class to be skinned

Correct Answer: A

Question 7

Which statement best describes the ArrayList and ArrayCollection components?

A. ArrayList supports cursors, unlike ArrayCollection

B. ArrayList and ArrayCollection are sortable and filterable

C. When using an Array as a data provider for a Spark list-based control, it will automatically be wrapped within ArrayList

D. Both ArrayList and ArrayCollection can be used as data providers for Spark list-based controls

Correct Answer: D

Question 8

You want to load a remote SWF via HTTP within your AIR application. You also want to expose methods that are defined within your AIR application to this SWF. Which statement is true?

A. This is NOT possible, as the AIR application and the loaded SWF are within different sandboxes

B. This is allowed by default, as long as the local methods do not involve local filesystem access

C. You must define a sandbox bridge within your application, which can be used within the loaded SWF

D. You must instruct the user to lower the security settings within Flash Player

Correct Answer: C

Question 9

Which two statements about the Spark DataGrid are true? (Choose two.)

A. The <s:DataGridColumn> component requires a dataField property

B. The Spark DataGrid is implemented as a skinnable wrapper around the SparkGrid

C. The Spark DataGrid is a skinnable component that uses a Grid control as a skin part

D. The <s:Scroller> component must be implemented to enable Spark DataGrid scrolling

E. The <s:GridColumn> component requires a dataField property

Correct Answer: B,C

Question 10

Which two classes can be extended to create a skin? (Choose two.)

A. SkinSpark

B. ComponentSkin

C. SparkSkin

D. SkinClass

E. Skin

Correct Answer: C,E

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Adobe Flex 4.5 ACE (9A0-182) Free Practice Test