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

Object data manipulation interface

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

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

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

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

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:selected _text_color=#000000

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.enableMinute(false);

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?

batchlnsert (Uri uri, ValuesBucket[]values)

insert (Uri uri,ValuesBucket value)

delete(Uri uri,DataAbilityPredicates predicates)

query (Uri uriString[ ]columns,DataAbilityPredicates predicates)

batchlnsert (Uri uri, ValuesBucket[]values)

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

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

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

A developer tries to update the text of Text directly in a non-UI thread, but the update fails, how to solve the problem of updating the UI of the non-UI thread in HarmomyOS??

is implemented through the task dispatcher UITaskDispatcher

is implemented through the ParallelTaskDispatcher

is implemented through the task dispatcher UITaskDispatcher

is implemented through the SerialTaskDispatcher

is implemented through the task dispatcher GlobalTaskDispatcher

Which option is not the process of decoding in the conversion of the following information?

player plays music from the record

Notebook plays video files from the hard drive

A developer has developed an Image component and written the following code, which of the following descriptions of the component is correct?

The x and y axes of the C plant image are scaled to 0.5 and the transparency is 0.5

The A plant image is scaled to 0.5

The x-axis and y-axis of the B plant image are scaled to 0.5 and the effect is cropped in half

The x and y axes of the C plant image are scaled to 0.5 and the transparency is 0.5

The D plant image is cropped in half

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

Jump to another page via a hyperlink

Start an AbilitySlice by navigating

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

Jump to another page via a hyperlink

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

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?

is horizontally centered and shifted 600 to the left

is horizontally centered and shifted to the right by 600

The parent layout moves 600 to the top left and right

is horizontally centered and shifted 600 to the left

Which of the following scenarios does not use encoding technology?

sound travels through twisted pairs

Sound travels through optical fibers

A developer has developed with the Text component, and the effect is as follows, which piece of code can be used to achieve the effect?

Both the provider and user of DataAbility use a URI (UnifomResourceldentifier) to identify a specific data, and the format of the URI is as follows:Scheme://[authority]/[path][? query][#fragment]Which is the correct URI description in the cross-device scenario and the local device scenario?

In the local device scenario, authority does not need to be specified

In cross-device scenarios, you do not need to enter authority

In cross-device scenarios, the scheme is fixed to 'dataability'.

In the local device scenario, authority does not need to be specified

In the local setting, the path does not need to be specified

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

Check the attributes of the config.json file the installation method of the HarmonyOS Ability Package (HAP) package

Check the properties of the config.json file the device debugging code type the installation method of the HarmonyOS Ability Package (HAP) package

Check the attributes of the config.json file the installation method of the HarmonyOS Ability Package (HAP) package

Set the code type device HAP (HarmonyOS Ability Package) package installation method check the config.json file attributes

To install the HarmonyOS Ability Package (HAP) package on a device check the attributes of the config.json file the debugging code type of the device

A developer found that the app could not use the network management function of Harmony OS without requesting permissions. In order to use the network management feature, the developer requested the following permissions for their app, which of them is not required for the network management feature?

ohos.permission.SET_NETWORK_INFO

Which of the following descriptions of the HarmonyOS clipboard function is correct?

can be copied and pasted into app B in app A

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

can be copied and pasted into app B in app A

HarmonyOS's AI capability provides the function of generating QR codes, for example, if you need to generate a QR code for each mobile phone contact, which of the following describes the QR code correctly?

Call the detect() method of IBarcodeDetector to generate the corresponding QR code image byte stream based on the input string information

The width of the generated QR code image can be 2000 pixels

The length of the string must be at least 2953 characters

The height of the generated QR code image can be 1680 pixels

Call the detect() method of IBarcodeDetector to generate the corresponding QR code image byte stream based on the input string information

Which of the following options is all the components of the Harmony OS package?

Logical code, resource files, third-party libraries, and application configuration files

Logical code, resource files, and application configuration files

Logical code and application configuration file

Logical code, resource files, third-party libraries, and application configuration files

Huawei H14-231_V1.0 Practice Test 3 - Free Online Exam Prep & Questions

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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