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26 Dec

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Latest and Most Accurate IBM C5050-408 Dumps Exam Questions and Answers:

Version: 8.0
Question: 21

An application developer is using JSONStore in a mobile application to store purchase orders. The application allows sellers to modify the status of an order.
The JSONStore collection for the orders is defined in a global variable as follows:
var ordCollection = {
orders: {
searchFields: {ord_number: ‘integer’, status: ‘string’ }
}
};
Which of the following JavaScript functions can the application developer use to change the status of an order in the local JSONStore?

A. var updateOrder = function(orderDoc, newStatus){ orderDoc.json.status = newStatus;
WL.JSONStore.update(ordCollection, orderDoc) .then(function (numberOfDocumentsUpdated) { // Handle success. })fail(function (errorObject) { // Handle failure.
});
};
B. var updateOrder = function(orderDoc, newStatus){ orderDoc.json.status = newStatus;
var ordColInstance = WL.JSONStore.get(ordCollection);
var numberOfDocumentsUpdated = ordColInsnance.update(orderDoc); if( numberOfDocumentsUpdated >= 0 ){
// Handle Success
} else {
// Handle Failure
}
};
C. var updateOrder = function(orderDoc, newStatus){ orderDoc.json.status = newStatus;
WL.JSONStore.get(‘orders’).replace(orderDoc) .then(function (numberOfDocumentsReplaced) { // Handle success. })fail(function (errorObject) { // Handle failure.
});
};
D. var updateOrder = function(orderDoc, newStatus){ orderDoc.json.status = newStatus;
var ordColInstance = WL.JSONStore.get(‘orders’);
var numberOfDocumentsReplaced = ordColInsnance.replace(orderDoc); if( numberOfDocumentsReplaced >= 0 ){
// Handle Success
} else {
// Handle Failure
}
};

Answer: B

Explanation:
WL.JSONStore.get(collectionName)
Provides an accessor to the collection if the collection exists, otherwise it returns undefined.
Must reference OrdCOllection in the Get statement.
References:
https://www.ibm.com/support/knowledgecenter/SSHS8R_6.3.0/com.ibm.worklight.apiref.doc/html/refjavascriptclient/html/WL.JSONStore.html

Question: 22

An application developer needs to detect when the mobile device has lost network connectivity. To do so, the developer has added a listener for event WL.Events.WORKLIGHT_IS_DISCONNECTED.
When will the application developer be notified of the loss of connectivity if the heartbeat is not enabled?

A. After the event “resume” has been fired.
B. When WL.Client.connect is called and it fails to connect to the Worklight Server.
C. When WL.Client.getEnvironment is called and the device does not have network connectivity.
D. When WL.Device.getNetworkInfo is called and the device does not have network connectivity.

Answer: D

Explanation:
WL.Device.getNetworkInfo() – This method is available for the Android and iOS environments.
A callback must be specified as a function parameter. The callback receives an object with the following properties: isNetworkConnected – true/false isAirplaneMode – true/false carrierName – string. For example, AT&T or VERIZON. telephonyNetworkType – string. For example, UMTS or GPRS. isRoaming – true/false
networkConnectionType – mobile/WiFi ipAddress – string
References: https://developer.ibm.com/mobilefirstplatform/documentation/getting-started-7-0/data/working-offline/

Question: 23

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An application developer is concerned about how many requests may hit the adapter being created. The developer wants to ensure that the adapter can handle enough requests, but yet not allow requests to overwhelm the system.
What can the application developer do to limit the number of requests that an adapter will handle?

A. In the web server configuration, specify number of requests for MaxClients.
B. In the application server configuration, specify the number concurrent requests for the servlet engine.
C. In the loadContraints element of the adapter XML file, specify the number of requests formaxConcurrentConnectionsPerNode.
D. In the connectionPolicy element of the adapter XML file, specify the number of requests formaxConcurrentConnectionsPerNode.

Answer: D

Explanation:
Tuning Back-end Connections
maxConcurrentConnectionsPerNode – The maximum number of concurrent requests that can be performed on the back-end application from the Worklight server node. The worklight server will create a thread pool with maxConcurrentConnectionsPerNode size for that purpose. This maxConcurrentConnectionsPerNode parameter is set in the adapter.xml in the connectivity entry.
References: https://www.ibm.com/developerworks/community/blogs/worklight/entry/tuning_worklight_server?lang=en

Question: 24

An application developer is attempting to update specific portions of a hybrid application by utilizing the direct update feature.
Which components can the application developer update using the direct update feature without having to rebuild and deploy a new binary of the application?

A. HTML, CSS, JavaScript
B. HTML, CSS, JavaScript, Java
C. HTML, CSS, JavaScript, Objective C
D. HTML, CSS, JavaScript, Version number

Answer: A

Explanation:
When you want to deliver a Worklight hybrid application that consists mainly of HTML5 with CSS and JavaScript, and you must change the hybrid part of the application to provide new features or to fix a defect, you do not have to ask the application users to update it on their devices. You can use the Worklight direct update mechanism to deploy new HTML with CSS and JavaScript for your application without changing the application version on the mobile device.
Incorrect:
Not D: Delivering a new version of native code
The main reason that you would want to deliver a new version of an application is probably because your application uses native code and you want to provide new features or deliver fixes that require changes in the native code. You might also need to provide a new native version of the application, even if your Worklight application is completely written by using web technologies, to accommodate new mobile operating systems supported only in later versions of IBM Worklight. You cannot use the direct update mechanism in either of these cases. You must build and deploy a new version of the application.
Reference: http://www.ibm.com/support/knowledgecenter/SSZH4A_6.2.0/com.ibm.worklight.dev.doc/devenv/ c_update_apps_wl_ac.html

Question: 25

The application developer needs to test the Worklight application on a remote server. In Worklight Studio, the application developer configures the remote server by right clicking on the {app_name} folder and selecting Run As > Build Settings and Deploy Target.
Which step does the application developer need to perform to ensure the server configuration changes are reflected in the application?

A. Run As > Run on Server
B. Run As > Build and Deploy
C. Run As > Apply Build Settings
D. Run As > Build All Environments

Answer: D

Explanation:
The Build Settings and Deploy Target dialog is used only to specify configurations and settings; clicking OK does not trigger a build. Any time that you make a modification with this dialog, you must rebuild your application and environments for your changes to take effect, by using the Run As > Build All Environments menu command.
References: https://www.ibm.com/support/knowledgecenter/SSZH4A_6.1.0/com.ibm.worklight.dev.doc/dev/ c_building_and_deploying_build_settings_deploy_target.html

Question: 26

Which one of the following correctly describes the content of the corresponding Worklight Application folder?

A. services folder – Contains client side services.
B. server folder – Contains libraries to be placed in external service servers.
C. bin folder – Contains project artifacts that are deployed to the Worklight Server.
D. externalServerLibraries folder – Contains references for application development and deployment.

Answer: C

Explanation:
The bin folder contains project artifacts that are deployed to MobileFirst Server.
Incorrect:
Not D: externalServerLibraries: Contains the libraries to be placed in external service servers and used for access token validation (by the service).
References:
https://developer.ibm.com/mobilefirstplatform/documentation/getting-started-6-3/hello-world/creating-your-firsthybrid-application/