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HCIP-HarmonyOS
H14-231_V1.0
HCIP-HarmonyOS Application Developer V1.0 Questions and Answers

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Viewing page 12 out of 14 pages

Viewing questions 166-180 out of questions

Questions # 166:

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?

Options:

Ability

KAL (Kernel Abstract Layer)

HDF (Hardware Driver Foundation)

Answer

Questions # 167:

Which of the following subsystems does a developer use when using the facial recognition feature of HarmonyOS?

Options:

Multi-mode input subsystem

Media Subsystem

Safety subsystem

Graphics subsystem

Answer

Questions # 168:

In the process of coding, software development engineers need to detect whether the Butfer data is read and whether an exception occurs, which of the following methods can be called?

Options:

Errorbuatfer()

Bucferlistencr()

lCodecListener()

ErrorCode()

Answer

Questions # 169:

After the creation of a custom component of the Web development paradigm, which of the following callbacks will be triggered when it is added to the Page component tree?

Options:

Onlnit

OnAttached

OnLayoutReady

OnDetached

Answer

Questions # 170:

Now a Text component is used as the title of a page, and Text needs to be set to be invisible, but it still occupies the current layout space, which of the following is correct?

Options:

ohos:visibility= hide

text.setVisibility(Component. VISIBLE)

ohos:visibility=visible

ohos: visibi1ity=invisible

Answer

Questions # 171:

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?

Options:

onStop()

onlnactive()

onForeground()

onBackground()

Answer

Questions # 172:

In order to ensure better responsiveness of the application, developers need to use the task distributor to design the priority of the task.

Options:

DEFAULT

MIDDLE

HIGH

LOW

Answer

Questions # 173:

In HarmonyOS, which of the following scenarios is the application responsible for instantiation?

Options:

Jump to another page through a hyperlink

reads a novel through a web page and accidentally clicks on an advertisement, which jumps directly to the app store to request the download of a certain game

An app page has messages, contacts, settings, etc., and you can switch between them

Start an AbilitySlice by navigating

Answer

Questions # 174:

How do I define the permissionscorrectly when a developer needs to customize the permissions for a third-party application forHarmony OS?

Options:

module: {

reqPermissions: [{

name:com.myability.permission.MYPERMISSION,grantMode:system_grant,

availableScope: [signatures]

}

module: {

defPermissions: [{

name:name:com.myability.permission.lNTERNET,

grantMode:user grant,

availableScope: [signatures]

}

module: {

defPermissions: [{

name:name:com.myability.permission.INTERNET,

grantMode:system_grant,

availableScope: [signatures]

}

module: {

defPermissions: [{

name:name:com.myability.permission.MYPERMISSION,

grantMode:system_grant,

availableScope: [signatures]

}

Answer

Questions # 175:

When a developer designs a news browsing application, he needs to achieve the effect that the news list and news details are not displayed on the same page, which of the following needs to be created by the developer?

Options:

0 Page Ability, 3 AbilitySlice

1 Page Ability, 2 AbilitySlice

3 Page Ability, 1 AbilitySlice

2 Page Ability, 1 AbilitySlice

Answer

Questions # 176:

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

Options:

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

onStart()→onCommand()—onForeground()→onBackground()→onStop()

onStart()→onCommand()→onStop()

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

Answer

Questions # 177:

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.