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Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 45

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List of questions

Question 441

(0)

When a developer uses HarmoyOS system security, which of the following functions makes the device have the ability to prove its security to other virtual devices?

Question 442

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A developer is using CommonEventData to encapsulate information about ordered public events for data processing when publishing, distributing, and receiving. What do I need to pay attention to when

Question 443

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When a developer is developing a flight booking application, he needs to use the sliding selector DatePicker in the date selection of air tickets, and in order to improve the user experience, he nee

Question 444

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A developer wants to use JS (JavaScript) to develop an application on the smart screen, Which of the following development languages does the developer need to master?

Question 445

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If a developer wants to develop an application on a smart screen, which of the following subsystems will he use?

Question 446

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. If a developer wants to use the distributed device virtualization capabilities of HarmonyOS, which of the following hardware can be selected by the developer?

Question 447

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What are the reasons why a developer wants to use the previewer in DevEco Studio to view the application interface of the design, but the previewer cannot be used?

Question 448

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The log content filtered by a developer through relevant information is: 01-2016:08:36.908 23597/com.example.myapplication W 00201/MY TAG:Failed to visit,reason:503. Which of the following canno

Question 449

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If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?

Question 450

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Which of the following methods can a developer use to obtain the actual pixel size corresponding to 8VP on the current device?

Related questions

When a developer is developing an online education application, in order to improve the user experience, if the user Answer:s the question correctly, a dialog box of 'Congratulations on the correct Answer:' will pop up at the top of the window.

Which of the following sorting types does the trusted list of devices found by HarmonyOS Device Manager contain?

In the HarmonyOS system architecture, the distributed data management module belongs to the framework layer.

A developer is developing a flight booking application, and uses the sliding selector Picker to select the location of the ticket and writes the following code.

fter a developer sets :ohos:layout_alignment='horizontal_center' in the Text component, he writes: text.setMarginRight (600) in the code, where is the Text displayed in the parent layout?

Which modules in the following figure can be installed and operated independently?

A developer needs to cancel a task, but part of the code segment he wrote was deleted by mistake. The remaining codes are as follows, with the missing codes indicated by the dash: TaskDispatcher dispatcher = getUlTaskDispatcher(); Revocable revocable = ________________________(new Runnable(){ @Overide Public void run(){ HiLog.info(L . ABEL_ _LOG,'delay dispatch'); } },10); Boolean revoked = revocable.revoke(); HiL og.info(L _ABEL_ LOG),'%{public}b' ,revoked); Which of the following might be missing pieces in the above code?

The default size of shared memory in Harmony OS is ?

An engineer uses the WLAN P2P function, and the engineer can establish a P2P group.

Which of the following classes is the base class for JavaScript FA (Feature Ability) to run on HarmonyOS?

Question 441

When a developer uses HarmoyOS system security, which of the following functions makes the device have the ability to prove its security to other virtual devices?

Device certificate certification

Safe Boot

Trusted Execution Environment

Zero trust model

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A developer is using CommonEventData to encapsulate information about ordered public events for data processing when publishing, distributing, and receiving. What do I need to pay attention to when developing?

data is the result data of an ordered public event

intent is not allowed to be empty

intent --- must be empty

code is the result code of an ordered public event

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Question 443

When a developer is developing a flight booking application, he needs to use the sliding selector DatePicker in the date selection of air tickets, and in order to improve the user experience, he needs to set the color of a single year/month/day item in operation to blue (#0000FF), which of the following items can meet the development needs?

ohos:selected text color=#0000FF

datePicker.setSelectedTextColor(new Color(Color.getlIntColor( '#0000FF')));

datePicker.setPeratedTextColor(new Color(Color.getIntColor('#000OFF')));

ohos:operated_text_color='0000FF'

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Question 444

A developer wants to use JS (JavaScript) to develop an application on the smart screen, Which of the following development languages does the developer need to master?

C/C++

CSS

HTML5

JavaScript

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Question 445

If a developer wants to develop an application on a smart screen, which of the following subsystems will he use?

DV subsystem

Proprietary business subsystem of smart screen

Safety subsystem

Media subsystem

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Question 446

. If a developer wants to use the distributed device virtualization capabilities of HarmonyOS, which of the following hardware can be selected by the developer?

display

Camera

Global Positioning System (GPS).

Accelerometer

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Question 447

What are the reasons why a developer wants to use the previewer in DevEco Studio to view the application interface of the design, but the previewer cannot be used?

Preview is not supported for files currently open in the editor

SDK has not been updated to the latest version

The previewer resource was not downloaded

Project is not synchronized successfully

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Question 448

The log content filtered by a developer through relevant information is:

01-2016:08:36.908

23597/com.example.myapplication W

00201/MY TAG:Failed to visit,reason:503.

Which of the following cannot be obtained by analyzing the log?

Content defined in HiLogLabel

Errno value

Reachable URL value

The log level is WARN

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Question 449

If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?

If the Service is running, the system will call back the onStart() method of the Service to start the Service

If the Service is running, the system will call back the onCommand() method of the Service to start the Service

If the Service is not already running, the system will call the onCommand() method to start the Service

If the Service is not yet running, the system will call onStart() to initialize the Service

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Question 450

Which of the following methods can a developer use to obtain the actual pixel size corresponding to 8VP on the current device?

int size4 =AttrHelper.convertDimensionToPix(getContext(),'8vp'',0);

int size3=AttrHelper.convertDimensionToPix(getContext(),'8',0);

int size2 =AttrHe1per.vp2px(8,getContext());

int sizel =(int)(Dislaylanager.getInstance ().getDefaultDisplay( getContext().get().getRealAttributes().scalDensity*8 +.5f);

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