Which of the following decorators can be used to manage the state of variables in custom
components?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
CD
Q: 2
A developer called the getDefaultHost(Context context) interface of BluetoothHost to obtain a
Bl1uetoothHost instance for managing local Bluetooth operations. The developer uses the following
development steps to implement Bluetooth pairing:
1Turn on Bluetooth.
2Scan Bluetooth.
3. Initiate pairing.
Which of the following statements about steps 1, 2, and 3 is true?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ACD
Q: 3
What are the following task distribution methods for developers?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ABCD
Q: 4
Which of the following subsystems in HarmonyOS is part of the basic software service subsystem set?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ACD
Q: 5
A software development engineer uses the traditional Bluetooth native management method to
manage Bluetooth, which of the following functions can the engineer achieve?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ABD
Q: 6
In the distributed terminal scenario, the "correct person" refers to the data accessor and business
operator who have passed identity authentication. The "right person" is a prerequisite to ensure that
user data is not illegally accessed and user privacy is not leaked. What does HarmonyOS use to
implement collaborative authentication?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ACD
Q: 7
If a HarmonyOS application developer wants to achieve the following effects, which of the following
combinations can achieve the effect?
A)
B)
C)
D)
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ACD
Q: 8
Which of the following are the lifecycle callback functions of Ability?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ABEF
Q: 9
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?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
AC
Q: 10
There is a config.json configuration file in the root directory of each HAP (HarmonyOS Ability
Package) of an application.
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ACD
Q: 11
When is the aboutToAppear() of the custom component executed?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
B
Q: 12
In the distributed artboard scenario, each device can be displayed synchronously with other devices
while writing, what distributed capabilities are used in this scenario?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
AD
Q: 13
When a programmer develops an online education application, the student interface has multiple choice questions and multiple choice questions, which of the following components is suitable for displaying multiple choice questions?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ANSWER: B
Q: 14
When a developer develops an online education application, which of the following components can be combined into a single-choice question if the student interface has multiple choice questions and multiple choice questions?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ANSWER: BD
Q: 15
A developer is developing an online education application, and there are multiple choice questions and multiple choice questions in the student interface, which of the following components is suitable for displaying multipl choice questions?
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
ANSWER: B
Q: 16
A user uses the HarmonyOS distributed task scheduling capability to migrate mobile phone videos to
the smart screen for playback. In this scenario, the process of finding whether the smart screen has
the same playback software is a global query.
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
A
Q: 17
When users use mobile phones, they will find that the phone number in the text message is often
highlighted, and they can dial directly. This is a typical application scenario for entity recognition Al.
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
A
Q: 18
Suppose that multiple AbilitySlice are associated in MainAbility, and multiple AbilitySlice are
switched in the same page, the lifecycle of MainAbility and all AbilitySlice is synchronized.
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
B
Q: 19
When a developer uses mobile phones and smart screens to develop applications, he can select two
device types, smartphones and smart screens, in the AppGallery project.
Options
Discussion
No comments yet. Be the first to comment.
Be respectful. No spam.
Correct Answer:
A
Q: 20
On the basis of the supported input events, the multi-mode input defines some input actions
commonly used by users as a set of standardized events, and maps the input events of different input
devices to the standardized events.
A)
B)
C)
D)
