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Huawei H14-231_V1.0 - HCIP-HarmonyOS Application Developer V1.0

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Total 695 questions

The distributed database is based on the KV data model and provides KV access interfaces.

A.

True

B.

False

Relational databases provide the ability to add, delete, modify, and query local data.

A.

corresponds to the interface where data is inserted, and returns the line number of the latest inserted data when the insertion is successful, and 0 when it fails.

B.

For interfaces that update data, the return value indicates the number of rows affected by the update operation, and returns 0 if the update fails.

C.

For interfaces that delete data, the return value indicates the number of deleted data rows, and if the deletion fails, it returns 0.

D.

For APIs that query data, you cannot run native SQL statements for query operations

In HarmonyOS, when a subscription action is performed after an out-of-order public event is published, subscribers can also receive the out-of-order public event.

A.

True

B.

False

HarmonyOS adopts a multi-core design, which supports the selection of appropriate OS kernels for different resource-constrained devices, and which of the following capabilities does the kernel provide for the operating system?

A.

file system

B.

Memory management

C.

Peripheral management

D.

Thread management

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?

A.

has just completed real-name authentication, but the authentication has not yet taken effect

B.

Account is not registered

C.

uses the Chrome browser

D.

The HUAWEI ID is not verified

When developing HarmonyOS applications, if the client and server need to communicate across processes, you can use idl to define programming interfaces that are recognized by both.

A.

True

B.

False

The user and provider of the service card do not require permanent operation, and when it is necessary to add, remove, or request to update the card, the card management service will pull up the card provider to obtain the card information.

A.

True

B.

False

HarmonyOS provides the NFC message notification function, through which developers can obtain the message of the NFC switch state change and the NFC field strength message.

A.

True

B.

False

Although a Page can contain multiple AbilitySlices, when a Page enters the foreground, the interface displays only one Abilitylice by default.

A.

True

B.

False

Lightweight data storage is suitable for data storage involving a large number of data relationships and business relationships, and has better read and write performance than relational databases and object-relational mapping databases.

A.

True

B.

False

If a developer wants to develop a file background download function, there needs to be a Page Ability to provide UI pages, and a ServiceAbility to provide a background file download function. If you want to perform some operations in the Service Ability after connecting to the Service Ability in the Page Ability, you need to implement the onConnect() method in the Service Ability.

A.

True

B.

False

When using EventHandler to implement inter-thread communication, if the callback method of EventHandler and the processing method of EventHandler are used.

A.

True

B.

False

The user application package of HarmonyOS may not contain a HAP package of the feature type.

A.

True

B.

False

When a developer develops an application based on HarmonyOS, the data used by a developer can be decomposed into multiple objects. The developer needs to add, delete, modify, and check the teaching data, but does not want to write overly complex SQL statements. In this scenario, the developer can use an object-relational mapping database to process the data.

A.

True

B.

False

When a developer uses the JS (JavaScript) UI framework to develop an application, if style =width:"10px is used in the component, the width of the component cannot be dynamically modified. If you use style="width:{{width}}" to set the width of a component, you can dynamically modify the width of the component in a JS file.

A.

True

B.

False