When adding user information, if the account uses a mobile phone number, which of the following input formats is correct?
HarmonyOS is designed for 1+8+N full-scene experience, which of the following devices belongs to the "8" in 1+8+N?
Which of the following features of the HarmonyOS distributed database are correctly described?
In the stage model, what are the following configuration files that belong to the AppScope folder?
Which of the following NFC functions can developers use when developing apps based on HarmonyOS?
HarmonyOS supports the flexible deployment of multiple terminal devices on demand through design methods such as componentization and miniaturization, and can adapt to different types of hardware resources and functional requirements. Which of the following descriptions of elastic deployment are correct?
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 developer designed an application, when the user receives a notification, if the user clicks on the notification, it will jump to a new page, and if the notification is not clicked, the new page will not be triggered.
Which of the following resource directories should the pictures, audios, videos and other media files involved in the application development process be placed in?
Whichof the following subsystems in Harmony OS can achieve data isolation between applications?
Regarding the ResponseCode returned by the request, which of the following descriptions is incorrect?
Which of the following scenarios is part of the HarmonyOS notification function?
When a HarmonyOS developer makes an FA call to PA, the callAbility interface returns the error "Internal ability not register.", which of the following points needs to be checked correctly?
If a HarmonyOSapplication developer wants to achieve the following effects, which of the following combinations can achieve the effect?


A)
B)
C)
D)
If a developer uses custom components when developing a HarmonyOS application, what are the correct descriptions of custom components below?