Which of the following databases uses SQLite as the persistent storage engine in HarmonyOS data management?

Object-relational mapping database

Lightweight preference database

Which of the following options belong to Particle Ability?

Particle Ability supports the Service Ability template

Particle Ability supports Data Ability templates

has the function of running tasks in the background

Particle Ability supports the Service Ability template

Particle Ability supports Data Ability templates

Particle Ability supports Page Ability templates

has the function of running tasks in the background

In the collaborative office scenario, project the document on the mobile phone to the smart screen, and perform page turning and zoom operations on the document on the smart screen. What distributed capabilities are used in the preceding scenarios?

Distributed Device Virtualization

A developer uses the HarmonyOS Bluetooth Low Energy function to achieve cross-distance wireless communication, how does the central device and peripheral devices interact in this scenario?

The peripheral device acts as a server and can receive GATT connection requests from the central device

Peripherals are responsible for sending broadcasts

The central device scans peripherals and discovers broadcasts

After the peripheral device and the central device establish a GATT connection, the peripheral device can query various data supported by the central device

The peripheral device acts as a server and can receive GATT connection requests from the central device

Peripherals are responsible for sending broadcasts

The central device scans peripherals and discovers broadcasts

In the distributed artboard scenario, each device can be displayed synchronously with other devices while writing, what distributed capabilities are used in this scenario?

Virtualization of distributed devices

In order to ensure that the application has better responsiveness, the developer has designed different priorities for tasks A, B, and C. Task A maintains the default priority, Task B has HICH, and Task C has LOW. Which of the following descriptions of tasks A. B, and C is correct?

Task A and B have the highest priority and have a higher chance of being executed than Tasks A and C

can be inferred from the priority design of the developer, who believes that task B does not need to wait for the result

Task A and B have the highest priority and have a higher chance of being executed than Tasks A and C

can be inferred from the priority design of the developer, who believes that task B does not need to wait for the result

Tasks A, B, and C should not be issued by the same task dispatcher

Task A has the highest priority and has a higher chance of being executed than Tasks B and C

The software engineer will encode the data, which can take two coding methods: ordinary and pipeline, which of the following are the differences between these two coding methods?

In pipeline mode, the application needs to call the setSource() method of the Source class

In pipe mode, the app is automatically parsed and transferred to the Code instance after it is correctly configured

In pipeline mode, the application needs to call the setSource() method of the Source class

In the B pipeline mode, the application must continuously transfer data B to the Code instance

In pipeline mode, it is not necessary for the application to continuously transfer data to the Code instance

In pipe mode, the app is automatically parsed and transferred to the Code instance after it is correctly configured

DevEco studio provides remote simulator developers to run and debug HMOS applications, which of the following limitations will the remote simulator have?

Automatically releases resources when it expires

Automatic remote simulation by default

A developer calls the getDefauitHOST(Context context) interface of Bluetooth HOST to obtain a Bluetooth HOST instance for managing local Bluetooth operations. This developer experiments with the following development steps to implement Bluetooth pairing. 1Turn on Bluetooth, 2Scan Bluetooth3 Initiate pairingWhich of the following statements about steps 1, 2, and 3 are correct?

CALLS STARTPAIR() TO COMPLETE STEP 3

calls enablebt() to complete step 1

CALLS STARTBTDISCOVERY() TO COMPLETE STEP 2

CALLS STARTPAIR() TO COMPLETE STEP 3

calls enablebt() to complete step 1

CALLS STARTBTDISCOVERY() TO COMPLETE STEP 2

steps 2 and 3 can be reversed in the order D

The user clicks on the song from the music list page to jump to the playback interface of the song, and clicks back to return to the music list page. Which of the following do developers need to do to implement this feature?

calls router.back() to return to the music list

calls router.push() to route to the playback interface

calls router.back() to return to the music list

Page Ability to create a music list page

Create a Page Ability area for playing the page

calls router.push() to route to the playback interface

When a developer develops a background music playback software, he needs to use Service Ability, what are the following correct descriptions of the use process of Service Ability?

Register the Ability in the application manifest file

When you use the connectAbility() method to connect to a Service, you need to pass in the Intent of the target Service

onConnect() needs to return an IRemoteObject object back

Register the Ability in the application manifest file

When you use the connectAbility() method to connect to a Service, you need to pass in the Intent of the target Service

onConnect() needs to return an IRemoteObject object back

Use setElement() of the Intent to set the target service information

If a developer uses the startAbility() method provided in Ability to start a Service, what are the correct descriptions of starting the Service?

If the Service is not already running, the system calls the onCommand() method to start the Service

If the Service is running, the system will call back the onCommand() method of the Service to start the Service

If the Service is not already running, onStart() is called to initialize the Service

If the Service is not already running, the system calls the onCommand() method to start the Service

If the Service is running, the system will call back the onStart() method of the Service to start the Service

If the Service is running, the system will call back the onCommand() method of the Service to start the Service

If the Service is not already running, onStart() is called to initialize the Service

In the following scenarios, which ones use the voice broadcast function?

Automatically read aloud e-books

Navigation system real-time voice report on the road ahead

Automatically read aloud e-books

Navigation system real-time voice report on the road ahead

Which of the following functions can be achieved through the sidebar button of the remote simulator?

Sets the device resolution of the remote emulator

Release the remote emulator that is currently in use

Return to the main interface of the device

Sets the device resolution of the remote emulator

Release the remote emulator that is currently in use

Return to the main interface of the device

NetworkID is the communication identifier of distributed network device nodes in distributed networking, in order to keep the NetworkID of the same device unchanged, which of the following operations should be avoided?

The device connects to different applications

In HramonyOS, which of the following can developers use the static animation feature to achieve?

The picture is rotated along the center point

The image rotates along the horizontal axis

The picture rotates along the vertical axis

The picture is rotated along the center point

The image rotates along the horizontal axis

The picture rotates along the edges

The picture rotates along the vertical axis

When a developer uses the Text component for development, because the length of the input string is too long, which of the following codes can be used to display the entire content?

ohos:truncation_mode='ellipsis_at_start'

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?

ohos.permission.ACTIVITY MOTION Topic 3, Exam Pool C

When a user is on a video call,Want to migrate the mobile phone video to the smart screen for playback,When clicking Migrate,Find that the smart screen is already in the optional list,What are the correct descriptions of the scene?

It embodies the characteristics of extremely fast transmission of distributed soft bus

requires the mobile phone and the smart screen to be under the same LAN

embodies the self-discovery function of the distributed soft bus

It embodies the characteristics of extremely fast transmission of distributed soft bus

requires the mobile phone and the smart screen to be under the same LAN

embodies the self-discovery function of the distributed soft bus

mobile phones and smart screens can make different Huawei accounts

There is an application A that occupies a large amount of memory and a background service B on the mobile phone, but there is no binding relationship between the two. What are the following scenarios that may cause Service B to be stopped?

applies A to call stopAbility() to stop service B

service B calls terminateAbility() by itself

The system is tight on memory and slow to respond

App A calls onCommand() to stop service B

applies A to call stopAbility() to stop service B

service B calls terminateAbility() by itself

The system is tight on memory and slow to respond

In order to put a series of related download tasks into a task group, a developer uses the following code:String dispatcherName ='parallelTaskDispatcher';TaskDispatcher dispatcher =createParallelTaskDispatcher(dispatcherName,TaskPriority.DEFAULT);Group group=dispatcher.createDispatchGroup();dispatcher.asyncGroupDispatch(group,newRunnable(){@Overridepublic void run(){HiLog.info(LABEL_LOG,'download taskl isrunning ');}});dispatcher.groupDispatchlotify(group,newRunnable(){@0verridepublic void run(){HiLog.info(LABEL_L0G,'the close task2 isrunning');}});dispatcher.groupDispatchlotify(group,newRunnable(){@Overridepublic void run(){HiLog.info(LABEL_L0G, 'the close task isrunning after all tasks in the group arecompleted');}});If the developer runs this code, which of the following results might occur?

download task1 is running download task2 is running the close task is running after all tasks in the group are completed

download task2 is running download task1 is running the close task is running after all tasks in the group are completed

the close task is running after all tasks in the group are completed download task1 is running download task2 is running

download task1 is running the close task is running after all tasks in the group are completed dowmload task2 is running

download task1 is running download task2 is running the close task is running after all tasks in the group are completed

download task2 is running download task1 is running the close task is running after all tasks in the group are completed

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

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

The global concurrent task distributor is globally unique

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

Concurrent task distributor is globally unique

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

The global concurrent task distributor is globally unique

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

A developer needs to use the emulator in DevEco Studio, click to log in to the emulator and enter your HUAWEI ID, and the browser will directly jump to the real-name authentication interface. What are the reasons for this problem?

has just completed real-name authentication, but the authentication has not yet taken effect

HUAWEI ID does not have real-name authentication

has just completed real-name authentication, but the authentication has not yet taken effect

HUAWEI ID does not have real-name authentication

A software development engineer will debug a piece of code, which of the following methods can be used?

Click Attach Debugger to Process

Knowing the variable int a=123, which of the following codes can successfully print the value of variable a in the console?

HiLog.info(LABEL,String.format('a =%d',a));

HiLog.info(LABEL,'a=%(public)d',a);

HiLog.info(LABEL,'a =%{private}d',a);

HiLog.info(LABEL,String.format('a =%d',a));

HiLog.info(LABEL,'a=%(public)d',a);

HiLog.info(LABEL,'a =%{private}d',a);

Which of the following subsystems in HarmonyOS belongs to the Enhanced Software Services subsystem?

Smart large-screen business subsystem

Huawei H14-231_V1.0 Practice Test 11 - Free Online Exam Prep & Questions

In order to complete the release of the application, an engineer needs to apply for a digital certificate, which of the following options is correct about the description of the digital certificate?

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