Which code segment should you insert at line VD05?
###BeginCaseStudy###
Case Study: 1
Scenario 1
Application Information
You are developing two Windows Store apps by using JavaScript: a Personal Trainer app and
a Client app. The apps will allow personal fitness trainers to interact with their remote clients.
Business Requirements- Personal Trainer Application
The Personal Trainer app must allow trainers to perform the following tasks:
• Create and store video and audio recordings of workout routines.
• View the profile and workout recordings for only one client at any time.
Business Requirements- Client Application
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- General
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- Hardware Requirements
The Personal Trainer and Client apps must support the following hardware requirements:
• Windows 8
• Webcam, microphone, and speakers
• Internet connection
While testing the apps, you identify the following issues:
• When you start the app for the first time, the system displays this warning message:
“This app needs permission to use your camera, which you can change in the app’s settings.”
• When you run the loadClientProfile( ) method in the clientData.js file, you receive an
“Access Denied” exception.
• The findCamera( ) method in the video.js file throws an exception on some devices.
• The recordVideo( ) method in the video.js file throws an exception when the device
does not support tilting.
###EndCaseStudy###
You need to validate whether the additional video recording functionality for the Client app is
supported.
Which code segment should you insert at line VD05?
Which code should you use to replace line 05?
You are developing an application.
The application contains the following code segment (line numbers are included for
reference only):
When you run the code, you receive the following error message: “Cannot implicitly convert
type ‘object” to ‘inf. An explicit conversion exists (are you missing a cast?).”
You need to ensure that the code can be compiled.
Which code should you use to replace line 05?
You need to handle the exception error in the clientData.js file
###BeginCaseStudy###
Case Study: 1
Scenario 1
Application Information
You are developing two Windows Store apps by using JavaScript: a Personal Trainer app and
a Client app. The apps will allow personal fitness trainers to interact with their remote clients.
Business Requirements- Personal Trainer Application
The Personal Trainer app must allow trainers to perform the following tasks:
• Create and store video and audio recordings of workout routines.
• View the profile and workout recordings for only one client at any time.
Business Requirements- Client Application
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- General
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- Hardware Requirements
The Personal Trainer and Client apps must support the following hardware requirements:
• Windows 8
• Webcam, microphone, and speakers
• Internet connection
While testing the apps, you identify the following issues:
• When you start the app for the first time, the system displays this warning message:
“This app needs permission to use your camera, which you can change in the app’s settings.”
• When you run the loadClientProfile( ) method in the clientData.js file, you receive an
“Access Denied” exception.
• The findCamera( ) method in the video.js file throws an exception on some devices.
• The recordVideo( ) method in the video.js file throws an exception when the device
does not support tilting.
###EndCaseStudy###
You need to handle the exception error in the clientData.js file.
What should you do?
Which code should you insert at line 28?
You have the following code (line numbers are included for reference only):
You need to ensure that if an exception occurs, the exception will be logged.
Which code should you insert at line 28?
You need to ensure that the class library assembly is strongly named
You are creating a class library that will be used in a web application.
You need to ensure that the class library assembly is strongly named.
What should you do?
Which code should you insert at line 07?
You write the following method (line numbers are included for reference only):
You need to ensure that the method extracts a list of URLs that match the following pattern:
<code>
@http://(www\.)?([^\.]+)\.com;
</code>
Which code should you insert at line 07?
Which type of collection should you use?
You need to store the values in a collection.
The solution must meet the following requirements:
The values must be stored in the order that they were added to the collection.
The values must be accessed in a first-in, first-out order.
Which type of collection should you use?
Which code segment should you insert at line CD06?
###BeginCaseStudy###
Case Study: 1
Scenario 1
Application Information
You are developing two Windows Store apps by using JavaScript: a Personal Trainer app and
a Client app. The apps will allow personal fitness trainers to interact with their remote clients.
Business Requirements- Personal Trainer Application
The Personal Trainer app must allow trainers to perform the following tasks:
• Create and store video and audio recordings of workout routines.
• View the profile and workout recordings for only one client at any time.
Business Requirements- Client Application
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- General
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- Hardware Requirements
The Personal Trainer and Client apps must support the following hardware requirements:
• Windows 8
• Webcam, microphone, and speakers
• Internet connection
While testing the apps, you identify the following issues:
• When you start the app for the first time, the system displays this warning message:
“This app needs permission to use your camera, which you can change in the app’s settings.”
• When you run the loadClientProfile( ) method in the clientData.js file, you receive an
“Access Denied” exception.
• The findCamera( ) method in the video.js file throws an exception on some devices.
• The recordVideo( ) method in the video.js file throws an exception when the device
does not support tilting.
###EndCaseStudy###
You need to enable trainers to select client profiles.
Which code segment should you insert at line CD06?
Which two actions should you perform?
An application is throwing unhandled NullReferenceException and FormatException errors.
The stack trace shows that the exceptions occur in the GetWebResult() method.
The application includes the following code to parse XML data retrieved from a web service.
(Line numbers are included for reference only.)
You need to handle the exceptions without interfering with the existing error-handling
infrastructure.
Which two actions should you perform? (Each correct answer presents part of the solution.
Choose two.)
You need to prevent the device-specific tilting exception
###BeginCaseStudy###
Case Study: 1
Scenario 1
Application Information
You are developing two Windows Store apps by using JavaScript: a Personal Trainer app and
a Client app. The apps will allow personal fitness trainers to interact with their remote clients.
Business Requirements- Personal Trainer Application
The Personal Trainer app must allow trainers to perform the following tasks:
• Create and store video and audio recordings of workout routines.
• View the profile and workout recordings for only one client at any time.
Business Requirements- Client Application
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- General
The Client app must allow clients to perform the following tasks:
• Browse a list of the trainer’s workout recordings.
• Record workouts by using the built-in webcam.
• Play, pause, restart, and stop workout recordings.
• If the capability is supported, allow the client’s webcam to pan as the client moves
around the room.
• Upload workout recordings for trainer review.
• Update their individual profiles to indicate workouts completed, calories burned, and
current weight.
The Client app must validate that the client’s subscription is valid.
Technical Requirements- Hardware Requirements
The Personal Trainer and Client apps must support the following hardware requirements:
• Windows 8
• Webcam, microphone, and speakers
• Internet connection
While testing the apps, you identify the following issues:
• When you start the app for the first time, the system displays this warning message:
“This app needs permission to use your camera, which you can change in the app’s settings.”
• When you run the loadClientProfile( ) method in the clientData.js file, you receive an
“Access Denied” exception.
• The findCamera( ) method in the video.js file throws an exception on some devices.
• The recordVideo( ) method in the video.js file throws an exception when the device
does not support tilting.
###EndCaseStudy###
You need to prevent the device-specific tilting exception.
What should you do in the video.js file?