Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 15

When an engineer needs to add the function of recording video when developing an application, which of the following interfaces should be called?

In the JavaScript UI framework, which layer is used to provide animation parsing, DOM (Document Object Model) tree construction, layout calculation, rendering command construction and drawing, event management, etc.?

Which of the following is the callback behavior of the Page Ability lifecycle that can destroy the page?

When the page loses focus, which of the following callback methods will be called by the system to make it enter the INACTIVE state?

A developer is developing an online education application, and there are multiple choice questions and multiple choice questions in the student Answer: interface, which of the following components is suitable for displaying multiple choice questions?

If the user displays the navigation information on the mobile phone and the smart watch at the same time, if the smart watch is out of power, causing the navigation information to terminate the display, which callback method will the navigation application on the mobile phone receive the termination notification?

If a developer needs to use asyncDispatchBarrier to set up a barrier asynchronously, in this scenario, in order to separate different task groups, the developer can choose which of the following task dispensers?

The key generated by the developer contains the public key and the private key used in asymmetric encryption, and in what format is the key stored in the key file?

If a developer wants to use the HarmonyOS speech recognition function, which of the following subsystems will he use?