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Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 15

Question list

List of questions

Question 141

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If there are 3 Ability sharing a Service instance, how can I exit the Service instance?

Question 142

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When an engineer needs to add the function of recording video when developing an application, which of the following interfaces should be called?

Question 143

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In the JavaScript UI framework, which layer is used to provide animation parsing, DOM (Document Object Model) tree construction, layout calculation, rendering command construction and drawing, event

Question 144

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Which of the following is the callback behavior of the Page Ability lifecycle that can destroy the page?

Question 145

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When the page loses focus, which of the following callback methods will be called by the system to make it enter the INACTIVE state?

Question 146

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A developer is developing an online education application, and there are multiple choice questions and multiple choice questions in the student Answer: interface, which of the following components i

Question 147

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If the user displays the navigation information on the mobile phone and the smart watch at the same time, if the smart watch is out of power, causing the navigation information to terminate the disp

Question 148

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

Question 149

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The key generated by the developer contains the public key and the private key used in asymmetric encryption, and in what format is the key stored in the key file?

Question 150

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

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?

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?

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.

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.

After the page is jumped or overwritten, it will enter the INACTIVE state, but the resources will not be released, and when the page switches back to the ACTIVE state, the click event will still respond normally.

Question 141

If there are 3 Ability sharing a Service instance, how can I exit the Service instance?

Ability does not need to quit

All abilities bound to the Service instance are exited

has 1 Ability to exit

has 2 Ability exits

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Question 142

When an engineer needs to add the function of recording video when developing an application, which of the following interfaces should be called?

Recorder

Coder

Extractor

Player

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In the JavaScript UI framework, which layer is used to provide animation parsing, DOM (Document Object Model) tree construction, layout calculation, rendering command construction and drawing, event management, etc.?

Engine Layer

Platform adaptation layer

Front-end frame layer

Application layer

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Question 144

Which of the following is the callback behavior of the Page Ability lifecycle that can destroy the page?

Page is no longer visible to the user, and the system will call onBackground() to notify the developer to release the corresponding resources

triggers onStop() to notify the user to release system resources

takes the Page out of focus and calls onInactive().

Trigger onDestroy() to release system resources

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Question 145

When the page loses focus, which of the following callback methods will be called by the system to make it enter the INACTIVE state?

onStart

onActive

onBackground

onInactive

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Question 146

A developer is developing an online education application, and there are multiple choice questions and multiple choice questions in the student Answer: interface, which of the following components is suitable for displaying multiple choice questions?

Picker

Checkbox

RadioButton

Switch

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Question 147

If the user displays the navigation information on the mobile phone and the smart watch at the same time, if the smart watch is out of power, causing the navigation information to terminate the display, which callback method will the navigation application on the mobile phone receive the termination notification?

onCompleteContinuation

onRestoreData

onRemoteTerminated

onSaveData

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Question 148

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

GlobalTaskDispatcher

SpecTaskDispatcher

SerialTaskDispatcher

ParallelTaskDispatcher

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Question 149

The key generated by the developer contains the public key and the private key used in asymmetric encryption, and in what format is the key stored in the key file?

cer

csr

p12

p7b

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