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

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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 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
In the task assigned by the dispatcher_a, the task is dispatched by dispatcher_a again
The thread pool is full
The thread pool is full
In dispatcher_a assignment tasks, use dispatcher_b to dispatch assignments
In dispatcher_a assignment tasks, use dispatcher_b to dispatch assignments
On a dedicated thread bound dispatcher_s, use dispatcher_s for syncDispatch
On a dedicated thread bound dispatcher_s, use dispatcher_s for syncDispatch
Suggested answer: A, D
asked 18/09/2024
aakriti grover
59 questions

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 complete the data exchange with the peripherals, the developer implemented the following development steps.

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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 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?

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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 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?

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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 descriptions is correct?

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Question 356

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

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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?

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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?

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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 items in the description of the scene?

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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?

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