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H14-231_V1.0 Huawei HCIP-HarmonyOS Application Developer V1.0 Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Huawei H14-231_V1.0 HCIP-HarmonyOS Application Developer V1.0 certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 695 questions

When using EventHandler to implement thread interrogation communication, if EventRurner takes out the InnerEvent event, EventRunner will directly process the event on the new thread.

A.

True

B.

False

Suppose that multiple AbilitySlice are associated in MainAbility, and multiple AbilitySlice are switched in the same page, the lifecycle of MainAbility and all AbilitySlice is synchronized.

A.

True

B.

False

When developers use HarmonyOS distributed terminals, which of the following items can ensure that the system is safe and reliable?

A.

In theprocess of cross-terminal flow of distributed data, the data is classified and hierarchically managed

B.

Distributed multi-terminal collaborative identity authentication

C.

Build a trusted operating environment on distributed terminals

D.

Thedistributed terminal must be a Huawei product

Which of the following descriptions of the global concurrent task distributor and the concurrent task distributor is correct?

A.

Concurrent task distributor is globally unique

B.

Global concurrent task dispatcher, obtained by Ability by executing getGlobalTaskDispatcher().

C.

The global concurrent task distributor is globally unique

D.

Concurrent task dispatcher, created by Ability to execute createParallelTaskDispatcher() and returned

When a developer is developing a flight booking application, he needs to use the sliding selector DatePicker in the date selection of air tickets, and in order to improve the user experience, he needs to set the color of a single year/month/day item in operation to blue (#0000FF), which of the following items can meet the development needs?

A.

ohos:selected text color=#0000FF

B.

datePicker.setSelectedTextColor(new Color(Color.getlIntColor( "#0000FF")));

C.

datePicker.setPeratedTextColor(new Color(Color.getIntColor("#000OFF")));

D.

ohos:operated_text_color="0000FF"

Regarding the container components Row and Column, the following statement is wrong.Themain axis of A Column container is vertical, and the cross axis is horizontal;

A.

The main axis of the row container is horizontal, and the cross axis is vertical.

B.

The main axis and the cross axis are always perpendicular to each other, and the direction of the Row and Column main axes is different.

C.

The alignment of the subcomponents of the C Column in the direction of the main axis is set using the justifyContent property, and its parameter type is FlexAlign.

D.

Thealignment of D Row's subcomponents in the direction of the cross axis is set using the alignltems property, which is of type HorizontalAlign.

When a data engineer constructs a data table, which of the following can be used as data types?

A.

Boolean type

B.

String type

C.

Double-precision floating-point type

D.

integer type

An application needs to obtain the Wi-Fi connection status of the current device and check whether the Wi-Fi is turned on. Which of the following permissions is not required in order to do this?

A.

ohos.permission.LOCATION

B.

ohos.permission.MEDIA_LOCATION

C.

ohos.permission.GET_WIFI_INFO

D.

ohos.permission.ACTIVITY MOTION

. When developing a HarmonyOS application, use a component Text as the title of a page, if you want to make the title invisible and still occupy the space of the current page, the following operations are correct

A.

ohos:visibility= "invisible"

B.

text.setVisibility(Component.HIDE)

C.

ohos:visibility="hide"

D.

text.setVisibility(Component.INVISIBLE)

How to set reverse playback in attribute animation?

A.

PlayMode.Normal B

B.

PlayMode.Alternate

C.

PlayMode.AlternateReverse

D.

PlayMode.Reverse

With regard to the characteristics of @State state data, the following description is incorrect

A.

State is decorated with a variable that is the internal state data of the component, and when the state data is modified, the build method of the component will be called to refresh the UI.

B.

Properties marked as @State are private variables that can only be accessed within the component

C.

@State variable can be left without an initial value

The decorated variables@Link

D.

child components can be bidirectionally bound to the @State variables of the parent component

HarmonyOS adopts a multi-core design, which supports the selection of appropriate OS kernels for different resource-constrained devices, and the kernel abstraction layer provides basic kernel capabilities for the upper layer by shielding the differences between multiple cores, including which of the following?

A.

Memory management

B.

File Management

C.

Network management

D.

Peripheral management

E.

Process Management

F.

Thread Management

Which of the following component hierarchies is wrong?

A.

list>listltem>Column

B.

Column>List>Listltem

C.

Grid>Row>Gridltem

D.

Grid>Gridltem

When a developer calls Particle Ability (PA) with FA (Feature Ability), callAbility returns the error "Internal ability not register.", what key steps does the developer need to check?

A.

checks that the Ability filled in on the JS (JavaScript) side is 1

B.

In the AccAbility inheritance class, whether the register method is executed for the AcelnternalAbility inheritance class

C.

Whether the bundLeName and abilityName filled in on the JS (JavaScript) side are the same as the names filled in the AcelnternalAbility inheritance class constructor

D.

Check that the Internal Ability entered on the JS (JavaScript) side is 0

If a HarmonyOS engineer needs to apply for a digital certificate to complete the application release, what are the errors in the following descriptions of digital certificates?

A.

is issued by AppGalleryConnect

B.

contains the public key in the key pair

C.

Digital certificates are used to ensure the integrity of the application

D.

format is .csr

What is the format of the software package when uploading and publishing a software package?

A.

.zip

B.

.app

C.

.apk

D.

.hap

Which of the following items is an asynchronous task dispatch method in HarmonyOS threads?

A.

asyncDispatch

B.

asyncGroupDispatch

C.

syncDispatch

D.

delayDispatch

Which of the following breakpoint management functions does the JS code type support?

A.

normal line breakpoint

B.

Exception breakpoint

C.

symbol breakpoint

D.

method breakpoint

Which field needs to be configured in the module.json5 file for UIAbility startup mode?

A.

module

B.

skills

C.

launchType

D.

abilities

Which of the following is all the components of the HAP package in HarmonyOS?

A.

Logical code, resource files, third-party libraries, application configuration files, pack.info

B.

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

C.

Logical code, resource files, application configuration files

D.

Logical code

Which of the following descriptions of Harmony OS Data Ability are correct?

A.

Data Ability is used to provide a unified abstraction of data access within and between applications

B.

Data Ability provides interfaces for adding, deleting, modifying, querying, and opening files of data, and the specific implementation of these interfaces is provided by the system

C.

Data Ability can be used for data sharing between apps on the same device and across devices

D.

Using Data Ability helps apps manage access to data stored by themselves and other apps, and provides a way to share data with other apps

Which of the following methods can jump to a new page and destroy the current page?

A.

router.pushUrl( )

B.

router.replaceUrl( )

C.

router.back( )

D.

router.clear( )

Which of the following positioning capabilities does the location service subsystem of HarmonyOS provide?

A.

WLAN location

B.

GPS

C.

Beidou

D.

Base Station

When developing a HarmonyOS application, which of the following notification types can be implemented by developers?

A.

Plain text

B.

Long text

C.

Image

D.

card

E.

Media

F.

Multiple lines

If a developer uses the Text component to develop a UI interface, if the outside of the Text component needs to be left blank, which of the following codes can the developer use?

A.

ohos:top_padding="15"

B.

ohos:top_margin="15"

C.

ohos:top_padding="30"

D.

ohos:top_margin="30"

Which of the following items are involved in migrating Page from device A to device B?

A.

Thesystem calls back the onStartContinuation( ) method of all AbilitySlice instances on the Page on device A and all AbilitySlice instances in its AbilitySlice stack

B.

requests migration from the Page on Device A

C.

The system calls back the onCompleteContinuation( ) method of all AbilitySlice instances on the Page on Device A and all AbilitySlice instances in its AbilitySlice stack

D.

If the migration can be done immediately, the system calls back the onSaveData( ) method of all AbilitySlice instances on the Page on device B and all AbilitySlice instances in its AbilitySlice stack

When using HarmonyOS in distributed terminal scenarios, which of the following capabilities can be used to ensure that the device is safe and reliable?

A.

Zero Trust model

B.

Device Certificate Certification

C.

Trusted Execution Environment

D.

Secure Boot

If a developer uses custom components when developing a HarmonyOS application, what are the correct descriptions of custom components below?

A.

Add tag elements such as styleable and item to values/attrs.xml

B.

In the constructor with the AttrSet parameter of the custom component, useattrSet.getAttr("XxX").get().getStringValue() to get the property

C.

Add xmlns:app="http://schemas.huawei.com/apk/ res/ohos"to the layout.xml of the component definition

D.

In the constructor of the custom component, call array.getlntegor(ResourceManager.styleab1e.***,100)to get the property

When creating an application, which field in the app.json5 or config.json file must be the same as the application package name?

A.

package

B.

name

C.

bundleName

D.

page

Which of the following APIs can I use to query the information of Ability?

A.

bundleManager.queryAbilityByWant

B.

BundleManager.getApplicationInfo

C.

BundleManager.getAbilitylnfo

D.

BundleManager.getBundlelnfo

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