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Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 36

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List of questions

Question 351

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A HarmamyOS developer created three task distributors, serial task dispatcher_a and dispatcher_b, and a proprietary task dispatcher dispatcher_s. The developer is experiencing a deadlock while using

Question 352

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To test the HarmonyOS Bluetooth Low Energy function, a developer uses a central device to call the startScan() interface and scans for a peripheral device. In order for the central device to complet

Question 353

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A developer uses a task distributor to dispatch tasks 1, 2, and 3. The developer added Task 1 and Task 2 to a task group and used syncDispatchBarrier to set up a task execution barrier on that task

Question 354

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A HarmonyOS developer uses the EventHandler mechanism to handle four events: A, B, C, and D, where event D retains the default priority, and the priority properties of the other three events are set

Question 355

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In order to control the access of a specific interface to the caller, an application confirms that the visitor has the required permissions through verifyCallingPermission. Which of the following de

Question 356

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Which of the following options belong to the kernel layer in the HarmonyOS system architecture?

Question 357

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When a developer uses the distributed task scheduling capability of HarmonyOS, which of the following features can be selected by the developer?

Question 358

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

Question 359

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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 i

Question 360

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In the same - Page, which of the following methods can be used to deal with the navigation between different pages?

Question 351

A HarmamyOS developer created three task distributors, serial task dispatcher_a and dispatcher_b, and a proprietary task dispatcher dispatcher_s. The developer is experiencing a deadlock while using syncDispatch, which of the following causes could cause this phenomenon?

In the task assigned by the dispatcher_a, the task is dispatched by dispatcher_a again

The thread pool is full

In dispatcher_a assignment tasks, use dispatcher_b to dispatch assignments

On a dedicated thread bound dispatcher_s, use dispatcher_s for syncDispatch

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Question 352

To test the HarmonyOS Bluetooth Low Energy function, a developer uses a central device to call the startScan() interface and scans for a peripheral device. In order for the central device to complete the data exchange with the peripherals, the developer implemented the following development steps.

GATT connection is successful, and the peripheral device can call the write method to write the eigenvalue data to the central device

After the central device obtains the peripherals, it calls connect (boolean isAUtoConnect, BlePeripheraCallback callback) to establish a GATT connection with the peripherals

After the C GATT connection is successful, the central device can call the discoverServices() interface to obtain various data supported by the peripheral equipment

After the GATT connection is started, the developer needs to determine whether the GATT connection is successful based on the serviceDiscoveredEvent(int status) callback result

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Question 353

A developer uses a task distributor to dispatch tasks 1, 2, and 3. The developer added Task 1 and Task 2 to a task group and used syncDispatchBarrier to set up a task execution barrier on that task group. During execution, the discoverer waits for both task 1 and task 2 to be executed before executing task 3. Based on the above scenario analysis, which of the following task distributors may be used by the developer?

SpecTaskDispatcher

ParallelTaskDispatcher

GlobalTaskDispatcher

Serial TaskDispatcher

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Question 354

A HarmonyOS developer uses the EventHandler mechanism to handle four events: A, B, C, and D, where event D retains the default priority, and the priority properties of the other three events are set as follows:

Event A: Priority.IMMEDIATE

Event B: Priority.HIGH

Event C: Priority.IDLE

Which of the following accounts of the above events is correct?

Event A will be delivered immediately

Event B D will be delivered before Event B

delivers event C when there are no other events

Event D will be delivered before Event C

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Question 355

In order to control the access of a specific interface to the caller, an application confirms that the visitor has the required permissions through verifyCallingPermission. Which of the following descriptions is correct?

If verifyCallingPermission returns a value of 0, the service is not provided

If the caller does not have permission, the service will not be provided

If verifyCallingPermission returns a value of -1. then the service will be provided

If the caller's permission verification is passed, the service will be provided

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Question 356

Which of the following options belong to the kernel layer in the HarmonyOS system architecture?

LiteOS

HDF (Hardware Driver Foundation)

Linux

KAL(Kerne1 Abstract Layer)

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Question 357

When a developer uses the distributed task scheduling capability of HarmonyOS, which of the following features can be selected by the developer?

Remote start

Remote call

Remote connection

Migration

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Question 358

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

Zero Trust model

Device Certificate Certification

Trusted Execution Environment

Secure Boot

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Question 359

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 items in the description of the scene?

The mobile phone and the smart screen can be different HUAWEI ID

embodies the self-discovery function of the distributed soft bus

The mobile phone and the smart screen need to be under the same LAN

embodies the characteristics of extremely fast transmission of distributed soft bus

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