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Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 5

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List of questions

Question 41

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In the HarmonyOS system architecture, which of the following can shield the differences between multiple cores and provide basic kernel capabilities for the upper layer?

Question 42

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When a developer uses Page Ability to open a ServiceAbility, he needs to pass parameters through Intent, at what stage is the parameter obtained in the whole process null? onStart( ) in A S ervice.

Question 43

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When a developer clicks the exit button of an application to release Page Ability resources, which callback method in the Page Ability lifecycle will be triggered?

Question 44

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In order to help users find data in the app through the global search app, a HarmonyOS developer needs to index the data of the app and configure the global search searchable entities. Which of the

Question 45

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Which of the following fields is not within the scope of permission?

Question 46

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If a HarmonyOS engineer is about to debug a HarmonyOS application on an emulator device, which of the following debugging processes is correct?

Question 47

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If a developer wants to use the video playback function of HarmonyOS, which of the following subsystems will he use?

Question 48

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A developer is developing a ticket booking application, in the selection of the location of the ticket, you need to use the slide selector Picker, in order to highlight the selected text, the develo

Question 49

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Which description of the HarmonyOS clipboard can be correctly interpreted in the following scenarios?

Question 50

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The HarmonyOS video module supports the development of video services and the opening of the ecosystem, allowing developers to easily play, operate, and develop new functions of video media through

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?

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

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?

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

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.

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

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 ?

Question 41

In the HarmonyOS system architecture, which of the following can shield the differences between multiple cores and provide basic kernel capabilities for the upper layer?

Ability

KAL (Kernel Abstract Layer)

HDF (Hardware Driver Foundation)

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Question 42

When a developer uses Page Ability to open a ServiceAbility, he needs to pass parameters through Intent, at what stage is the parameter obtained in the whole process null?

onStart( ) in A S ervice.

bility

PageAbility

ServiceAbility

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Question 43

When a developer clicks the exit button of an application to release Page Ability resources, which callback method in the Page Ability lifecycle will be triggered?

onStop()

onlnactive()

onForeground()

onBackground()

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In order to help users find data in the app through the global search app, a HarmonyOS developer needs to index the data of the app and configure the global search searchable entities. Which of the following interfaces can the developer choose to index their application data?

Converged search interface

Distributed data service interface

Data storage management interface

Relational data services

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Question 45

Which of the following fields is not within the scope of permission?

privileged

signature

restricted

deivced

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Question 46

If a HarmonyOS engineer is about to debug a HarmonyOS application on an emulator device, which of the following debugging processes is correct?

Check the properties of the config.json file set the installation method of the hap package set the debugging code type start debugging

Set the installation mode of the HAP package set the debugging code type check the properties of the configjson file start debugging

Set the installation method of the HAP package check the properties of the configjson file set the debugging code type start debugging

Set the debugging code type check the properties of the config.json file set the installation method of the HAP package start debugging

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Question 47

If a developer wants to use the video playback function of HarmonyOS, which of the following subsystems will he use?

Media Subsystem

Safety subsystem

AI subsystem

Location Services Subsystem

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Question 48

A developer is developing a ticket booking application, in the selection of the location of the ticket, you need to use the slide selector Picker, in order to highlight the selected text, the developer sets the rendering effect that the selected text margin is greater than the ordinary text margin. Which of the following settings are correct?

<Picker...... ohos:selected_normal_text_margin_ratio='5.0'/>

Picker.setSelectNormal TextMarginRatio(5.0f);

<Picker...... ohos:selected_normal_text_margin_ratio='0.5'/>

Picker.setSelectNormalTextMarginRatio(5.0);

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Question 49

Which description of the HarmonyOS clipboard can be correctly interpreted in the following scenarios?

can be copied in application A, but cannot be pasted in application B

can be copied and pasted into app B in app A

Only replication is supported

Only clipping is supported

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Question 50

The HarmonyOS video module supports the development of video services and the opening of the ecosystem, allowing developers to easily play, operate, and develop new functions of video media through the open interfaces. Video playback includes playback controls, playback settings, and playback queries, such as start/stop playback, playback speed settings, and whether to loop playback. When developing a video playback feature, which of the following steps is correct?

Create a Player instance construct a data source object and set the media source call method prepare(), call method play(), call method stop( call method release()

Create a Player instance call the prepare() play() construct the data source object and set the media source call the stop() release().

Construct a data source object and set the media source create a Player instance call method play(), call method prepare(), call method stop( call method release()

Call the prepare() method create a Plawer instance construct a data source object and set the media source call method create a Player instance, Play() call method stop() call method release()

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