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| Section | Objectives |
|---|---|
| Topic 1: Data Management & Storage | - Data persistence mechanisms - Database and key-value storage |
| Topic 2: System Capabilities & Integration | - Device interaction and distributed capabilities - Sensor and hardware integration |
| Topic 3: Security & Performance | - Application security mechanisms - Performance optimization principles |
| Topic 4: Application Development | - Application lifecycle management - UI development (ArkUI / declarative UI) - Ability development and components |
| Topic 5: HarmonyOS Fundamentals | - HarmonyOS architecture overview - Distributed system concepts - Application framework basics |
1. There is a button on the main interface of a HarmonyOS application, and the display text on the button is
"Start Download", after clicking this button, a sub-thread is created to perform time-consuming download operations. After the download is over, you can change the button in the subthread to "Download End".
A) True
B) False
2. Which of the following operations can be performed through the @ohos.systemTime module?
A) Set the system alarm
B) Set the system period
C) Set the system time zone
D) Set the system time
3. When a user uses the device camera to flip a blurry text file, he expects the camera app to provide a plug-in to improve the recognition of the text. Which of the following HarmonyOS service features is best suited to meet the needs of this user?
A) Keyword extraction
B) Document detection and correction
C) Image text is super-resolved
D) General character recognition
4. Which of the following items are involved in migrating Page from device A to device B?
A) Thesystem calls back the onStartContinuation( ) method of all AbilitySlice instances on the Page on device A and all AbilitySlice instances in its AbilitySlice stack
B) If the migration can be done immediately, the system calls back the onSaveData( ) method of all AbilitySlice instances on the Page on device B and all AbilitySlice instances in its AbilitySlice stack
C) requests migration from the Page on Device A
D) The system calls back the onCompleteContinuation( ) method of all AbilitySlice instances on the Page on Device A and all AbilitySlice instances in its AbilitySlice stack
5. The library file is the third-party code that the application depends on, which of the following library files are correct?
A) Create a new module with the source code of the library file as a whole, and the entry directly references the classes in the library file
B) Put the library file in the libs directory in the form of jar.so, and then reference the dependency library through the build.gradle of the application module dependencies(Implementation project(":mylibrary"))
C) If the required library files exist in the maven repository, you can use repositories{Maven{Url'XXX'//toadd the project's build.gradle as follows The address of the Maven repository, which can be either a local Maven address or a remote Maven address}
D) Put the library files in the libs directory in the form of jar, so, etc., and then referencethe dependencies dependencies{Implementation project(":mylibrary ")} through the build.gradle under the project
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: A,B,C,D | Question # 3 Answer: D | Question # 4 Answer: C,D | Question # 5 Answer: B,C,D |
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