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Mobile Development Fundamentals

Question No: 21 – (Topic 1)

What is the maximum size of a local database?

  1. 128 MB

  2. 256 MB

  3. 512 MB

D. 1,024 MB

Answer: C

Question No: 22 – (Topic 1)

In a Windows Phone 7 application, which two classes are used to share information on social networks? (Choose two.)

  1. SmsComposeTask

  2. EmailAddressChooser

  3. PhoneNumberChooser

  4. EmailComposeTask

  5. shareStatusTask

  6. ShareLinkTask

Answer: E,F

Explanation: E:Use the share status task to enable the user to share a status message on the social network of their choice.

F:Use the share link task to enable the user to share a link on the social network of their choice.

Question No: 23 – (Topic 1)

Where should an application store general session data that can be recovered after tombstoning?

  1. A dictionary in Application.xaml.es

  2. Data in PhoneApplicationPage.Tag

  3. Data in PhoneApplicationService.Current.State

  4. A file in isolated storage

Answer: C

Question No: 24 – (Topic 1)

Windows Phone 7.5 devices should have a minimum RAM of:

  1. 64 MB.

  2. 384 MB.

  3. 1 GB.

  4. 4 GB.

Answer: B

Question No: 25 – (Topic 1)

You are designing the user interface for a Windows Phone 7 application by using Microsoft Silverlight. Which markup language should you use?

  1. DHTML

  2. MAML

  3. XAML

  4. HTML

Answer: C

Question No: 26 – (Topic 1)

Which three web service technologies can be used by a mobile application to retrieve remote data? (Choose three.)

  1. WCF Services (SOAP)

  2. WCF RIA Services

  3. WCF Data Services (OData)

  4. windows Azure Storage Services

  5. Web Services on Devices (WSD)

Answer: A,C,D

Explanation: A:Windows Communication Foundation (WCF) enables you to develop web

services based on SOAP.

C:The Open Data Protocol (OData) is based on an entity and relationship model that enables you to access data in the style of representational state transfer (REST) resources. By using the OData client library for Windows Phone, Windows Phone apps can use the standard HTTP protocol to execute queries, and even to create, update, and delete data from a data service.

D:Windows Azure Mobile Services allow you to add a cloud-based service to your Windows Store app

Question No: 27 – (Topic 1)

Which style service is used by Windows Communication Foundation (WCF) to request remote resources that use uniform resource identifiers?

  1. Database Management Services

  2. Master File Table (MFT)

  3. Representational State Transfer (REST)

  4. Remote Procedure Call (RPC)

Answer: D

Question No: 28 – (Topic 1)

Which technology is used to send notifications from web services to Windows Phone devices?

  1. File Transfer Protocol (FTP)

  2. Pull

  3. Callback

  4. Simple Mail Transfer Protocol (SMTP)

  5. Push

Answer: E

Question No: 29 – (Topic 1)

How should you handle long-running tasks in an application?

  1. By displaying a progress bar and running the tasks in the background, and then ensuring that the users are able to cancel the operations

  2. By caching the result to application runtime when the tasks complete for the first time

  3. By prompting the users before starting the tasks and allowing them to stop the tasks from occurring

  4. By stopping all other operations and running only the tasks

Answer: D

Question No: 30 – (Topic 1)

Which Language-Integrated Query (LINQ) request expression is used to create a projection of the data returned?

  1. Where

  2. Join

  3. From

  4. Group

  5. Select

  6. Orderby

Answer: E

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