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Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 9

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List of questions

Question 81

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When a developer designs a navigation application and needs the system to provide accurate positioning, which subsystem will be used?

Question 82

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Which of the following is NOT a component of the Harmony OS object-relational mapping database?

Question 83

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Which of the following belongs to the lifecycle of starting a Service Ability?

Question 84

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If a developer needs to use asyncDispatBarrionr to set up a barrier asynchronously, in this scenario, in order to separate different task groups, which of the following can the developer choose?

Question 85

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If a developer wants to use the JavaScript UI framework to develop a graffiti application that allows users to draw custom graphics, which of the following components can be used by the developer?

Question 86

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When a developer clicks the exit button of an application to release PageAbility resources, which callback method in the ability lifecycle of the Pag package will be triggered?

Question 87

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If a developer wants to develop a page with a tab function, the developer can use the TabList component provided by HarmonyOS. If you want to set the color of unchecked text to black. Which of the f

Question 88

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When a developer was developing a ticket booking application, he used the sliding selector TimPicker in the time selection of air tickets, according to the requirements of the airline, the time does

Question 89

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If a developer wants to develop a Data Ability for the storage and management of application data, which of the following can help the developer realize the function of inserting multiple pieces of

Question 90

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An engineer uses a local simulator for application debugging, which of the following describes the error of the local simulator?

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?

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?

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

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

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.

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?

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?

The default size of shared memory in Harmony OS is ?

Question 81

When a developer designs a navigation application and needs the system to provide accurate positioning, which subsystem will be used?

Wearable business subsystem

Location Services Subsystem

Multi-mode input subsystem

Media subsystem

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Question 82

Which of the following is NOT a component of the Harmony OS object-relational mapping database?

Object data manipulation interface

Database

Solid object

Relationship table

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Question 83

Which of the following belongs to the lifecycle of starting a Service Ability?

onStart()onComrand()onBackground()onStop()

onStart()onCommand()---onForeground()onBackground()onStop()

onStart()onCommand()onStop()

onStart() onCommand()onBackground() onDisconnect()onStop()

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Question 84

If a developer needs to use asyncDispatBarrionr to set up a barrier asynchronously, in this scenario, in order to separate different task groups, which of the following can the developer choose?

serialTaskDispatcher

SpeeTaskDispatcher

ParallelTaskDispatcher

GlobalTaskDispatcher

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Question 85

If a developer wants to use the JavaScript UI framework to develop a graffiti application that allows users to draw custom graphics, which of the following components can be used by the developer?

video

button

canvas

grid-container

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Question 86

When a developer clicks the exit button of an application to release PageAbility resources, which callback method in the ability lifecycle of the Pag package will be triggered?

onBackground( )

onInactive( )

onForeground( )

onStop( )

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If a developer wants to develop a page with a tab function, the developer can use the TabList component provided by HarmonyOS. If you want to set the color of unchecked text to black. Which of the following codes is correct?

ohos:selected_tab_indicator_color=#000000

ohos:tab_indicator_type=#000000

ohos:normal_text_color=#000000

ohos:selected _text_color=#000000

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Question 88

When a developer was developing a ticket booking application, he used the sliding selector TimPicker in the time selection of air tickets, according to the requirements of the airline, the time does not need to display the second information, which of the following can meet the needs?

timePicker.enableHour(false);

timePicker.showMinute(false);

timePicker.enableMinute(false);

timePicker.showSecond(false);

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Question 89

If a developer wants to develop a Data Ability for the storage and management of application data, which of the following can help the developer realize the function of inserting multiple pieces of data into the database at one time?

insert (Uri uri,ValuesBucket value)

delete(Uri uri,DataAbilityPredicates predicates)

query (Uri uriString[ ]columns,DataAbilityPredicates predicates)

batchlnsert (Uri uri, ValuesBucket[]values)

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Question 90

An engineer uses a local simulator for application debugging, which of the following describes the error of the local simulator?

You can run both the application-compatible signed and unsigned HAP (HarmonyOS Ability Package) on the local simulator

By default, DevEco Studio does not automatically match the corresponding device emulator

The default shortcut to start running is Shift+F10

The local emulator can run and debug HarmonyOS applications for Lite Wearable and Smart Vision devices

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