Which three are correct practices by developers who are creating a MAF application?

• A. caching data in the local database when network reliability is suspect
• B. exposing server data through SOAPservices rather than using REST because WSDL provides better payload documentation
• C. using CSS files to override out-of-the-box styles rather than specifying custom styles in the inline style property of the individual UI component
• D. avoiding using large images in the application
• E. loading all of the application data from the server in one calltoavoid having to call the same service to retrieve data again

The EL expression #{deviceScope.hardware.networkStatus} returns a dynamic value based on the mobile device's current network connectivity.
Which is an invalid use of the network status?

• A. Stop the user from invoking the phone device service, which relies on a 2G, 3G, or 4G connection if the network status returnswifi.
• B. Disable entry to a feature if it requires network access and the current network status isnone.
• C. If the value returned is 3g, warn the user that downloading data may take significant time.
• D. Call an external web service to refresh data if a connection is available; otherwise, use a local cached copy of the data.

Which task must you perform if your application needs to access a unique device feature that is not supported out-of-the-box by Oracle MAF?

• A. Add a native type application feature to your AMX application coded in the native SDK.
• B. Use web service calls to the specific device feature.
• C. Develop or use an existing Cordova plug-in for this feature and add it to your MAF application.
• D. There is no way to access device features that are not provided out-of-the-box in Oracle MAF.

When developing a MAF application for service technicians, you determine that the mobile technician will need to extensively describe the condition of the item he or she is servicing, including the area that is broken and any other pertinent details.
How would you implement this in an MAF application to avoid excessive typing?

• A. Use the camera integration feature to allow the technician to take a photo of the serviced item.
• B. Use the voice recognition integration feature to allow the technician to enter details by voice.
• C. Use an input text area to allow for multiple lines of text.
• D. Use a remote URL page to enable the technician to specify the description in a browser-based page.

You are debugging an MAF application. The application stores the total cost of items in the user's shopping cart in a managed bean variable. The total cost is then displayed in an AMX page via an amx:outputText component. A button is pressed on the page to add another item to the shopping cart, and, as a result, the total cost value is changed in the managed bean. However, you notice that the value is not changed in the AMX page.
Which is the reason for this behavior?

• A. The total cost variable does not have aPropertyChangeListenerfiring on data change.
• B. The scope of themanaged bean ispageFlowScope.
• C. Theamx:outputText partialTriggerproperty must include the ID of theamx:commandButtonthat is invoking the change.
• D. The variable is anintinstead of adouble.