In application software architecture, the classic three-tier architecture consists of a user interface layer (UserInterfaceLayer), business logic layer (BusinessLogic Layer) and Data Access Layer (DataAccessLayer). Among them, the data access layer: also known as the domain layer, is responsible for the processing of the system business logic also known as the SERVICE layer. Single selection
In the design stage of application migration to the cloud it is necessary to fully consider all aspects of the implementation of the migration work, including the planning of the migration process, the design of the migration plan, the analysis of migration scenarios, the adaptation of tools, and the emergency plan.
The workflow for a Content Delivery Network CDN has the following steps:
The user enters the domain name of the website visited in the browser, www example. com. Initiate domain name resolution requests to local DNS;
Local DNS checks the cache for www example. The IP address record for c om. If so, it is returned directly to the end user; If not, Bay! Authorize DNS queries to websites;
The request is directed to the CDN service;
The Web DNS Service Resolves that the domain name has been parsed To CHAME:www example. come. cdnhuawei. com; 5- The user obtains the CDN node lP address with the fastest response; 6- After obtaining the IP address of the best node, the browser sends an access request to the CDN node;
7-CDN intelligently resolves domain names and returns the IP address of the CDN node with the fastest response to the local DNS. Which is the correct order of the CDN request flow below Single selection
An insurance company has purchased Huawei's dedicated Dell, so there is no additional charge for ECS created on this Dell. Single selection
If you want to use HUAWEI CLOUD Container Service to deploy a website application, and after purchasing a HUAWEI CLOUD CCE cluster, you adopt different deployment methods for each component of the website Single selection
During the migration of applications to the cloud the main responses^ for risk points that may cause data inconsistencies are as follows: QUESTION NO: Incremental synchronization is coordinated with multiple full synchronizations, and the last synchronization needs to stop the origin server service writes; 2. Stop the source service writing before migration, and the migration data is full data; 3. Before migration, the customer shall make a backup of the source data. Single selection
A company is an Internet product development company, and the company's architect decides to use the grayscale release strategy to iterate the product version, which of the following options cannot be used as the reason why the company adopts grayscale release? Single selection
The following description of the database SQL optimization method. which is wrong? Single selection
Which of the following migration scenarios is the most suitable CDM? Single selection
Which of the following features and advantages of HUAWEI CLOUD DATA ACCESS SERVICE DI S is incorrect? Single selection
TESTED 16 Oct 2025