IBM C2180-278 examen pratique questions et réponses

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Code d'Examen: C2180-278
Nom d'Examen: IBM (IBM Worklight V6.0 Mobile Application Development)
Questions et réponses: 54 Q&As

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NO.1 A mobile application developer has written a hybrid android app and has enabled Push
Notifications for it. On subscribing to the eventsource with userId "TestUser", the userID that is
persisted in the database is "3266532456798262364265" instead of "TestUser". What is the cause?
A security test is missing from the:
A. adapter methods.
B. adapter methods and the application.
C. application-descriptor.xml.
D. WL.Server.createEventSource function.
Answer: D

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NO.2 A mobile application developer has written a Cordova plug-in for an application. The
developer would like to now test its functionality. To do so, what must the application developer
configure in the Worklight project? Declare the:
A. plug-in name in config.xml.
B. plug-in name in initOptions.js.
C. plug-in name in the HEAD element of the application's .html file.
D. .java class file name in AndroidManifest.xml.
Answer: A

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NO.3 A mobile application developer needs to add a button to a Worklight application. Using the
Rich Page Editor, the application developer drags a button widget onto the canvas of the existing
page. What should the application developer do to give the button the id "getContactsButton" and
have it invoke the JavaScript function getContacts() when it is clicked?
A. Right-click on the canvas and bring up the properties dialog, type getContactsButton in the id
field and select getContacts() in theonclick drop down menu.
B. Right-click on the canvas and bring up the properties dialog, type getContactsButton in the id
field, locate the onclick property and typegetContacts() for its value.
C. Find the Properties view for the the button and select the All tab. Then type getContactsButton in
the id field and select getContacts() inthe onclick drop down menu.
D. Find the Properties view for the the button and select the All tab. Then type getContactsButton in
the id field, locate the onclick propertyand type getContacts() for its value.
Answer: D

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NO.4 A mobile application developer has created an application for indoor shopping mall customers.
The application needs to distinguish shopping areas from eating areas inside the mall using WiFi.
How can the application developer do this?
A. Use WL.Device.getContext() to return the current geofence.
B. Use a DwellInside trigger to determine which area the user is in.
C. Use a PositionChange trigger to signal when the user moves into a different area.
D. Use the WL.Device.Geo.Profiles API to set the acquisition policy to acquire information from
bluetooth, NFC, and WiFi broadcasts.
Answer: B

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NO.5 A mobile application developer intends to use Worklight Android Native APIs to develop a
mobile application. A Worklight Android Native API is added to the Worklight project. Which file
does the application developer need to copy to the Android application project to connect to the
Worklight Server?
A. wlclient.properties
B. worklight.properties
C. authenticationConfig.xml
D. application-descriptor.xml
Answer: A

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NO.6 What is the name of the JSON object used to store translated application strings?
A. Strings
B. Messages
C. Languages
D. Translations
Answer: B

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NO.7 A mobile application developer has been asked to write an application that will work even
when there is no connectivity. When input data is to be saved, the application must determine
whether it should be written to the server or to a cache. How should the application developer do
this?
A. Call WL.Server.isConnected() before every call to the Worklight server, and write to the cache if it
returns false.
B. Use the Worklight API call WL.Server.setConnectivity() to register a function to be called
whenever the application goes offline or comesback online.
C. Use the Worklight API call WL.Framework.addEventListener to register callbacks when
WL.Events.WORKLIGHT_IS_CONNECTED andWL.Events.WORKLIGHT_IS_DISCONNECTED are fired by
the Worklight framework.
D. Use the JavaScript API call Document.addEventListener to register callbacks when
WL.Events.WORKLIGHT_IS_CONNECTED andWL.Events.WORKLIGHT_IS_DISCONNECTED are fired by
the Worklight framework.
Answer: D

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NO.8 A mobile application developer is required to link a local JSONStore to synchronize with a
Worklight Adapter. To do so, to which function would the application developer need to specify the
adapter option?
A. WL.JSONStore.init()
B. WL.JSONStore.push()
C. WL.JSONStore.load()
D. WL.JSONStore.getPushRequired()
Answer: A

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NO.9 A mobile application developer wishes to mock up an application quickly using the built in
Worklight Screen Templates for Dojo. How can the developer add a screen template to an existing
Dojo project? From the Worklight Studio Design view:
A. select File -> New -> Web Page and choose a template
B. right click in the Outline pane, select Add and choose a template
C. right click in the Mobile Navigation pane, select Add and choose a template
D. right click on the <app name> folder, select New -> Web Page and choose a template
Answer: C

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NO.10 A mobile application developer needs to deploy a mobile application developed using IBM
Worklight Studio to a remote server. To do so, which mandatory file must be present on the remote
server?
A. derby.jar
B. worklight-jee-library.jar
C. worklight-extension-api.jar
D. com.ibm.ws.wim.core.jar
Answer: B

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NO.11 A mobile application developer has created a Worklight adapter, largeData, which returns a
large amount of data. Due to network latency, the application developer would like to compress the
data returned. How can the application developer compress the data sent between the mobile
device and the Worklight server? The developer can set compressResponse to true in the:
A. largeData.xml file.
B. largeData-impl.js file.
C. invokeProcedure function.
D. application-descriptor.xml file.
Answer: C

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NO.12 A mobile application developer is asked to work on a mobile project and build Web resources
such as HTML, CSS and JavaScript that will later be packaged to complete the application by another
developer. What application type should be selected by the application developer in Worklight
Studio to accomplish this?
A. Inner Application
B. Shell Component
C. Native Application
D. Hybrid Application
Answer: A

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