This note covers the management and monitoring, governance and compliance and cost management. This section account for about 30%-35% of the exam and provide a solid understanding of manage and governance Azure.

This note covers the compute, networking, and storage services sections of the AZ-900 exam. It includes key Azure services such as virtual machines, virtual networks, and storage accounts, along with modern tools like Azure Functions and Azure OpenAI. These sections account for about 35–40% of the exam and provide a solid understanding of Azure’s core service offerings.

This note covers key topics from the AZ-900 exam, including Azure architecture, Microsoft Entra ID, and Azure security. It introduces core concepts like global infrastructure, identity management, and security tools such as Conditional Access and Defender for Cloud. Together, these topics make up about 35–40% of the exam and form the foundation of Azure fundamentals.

This note covers the Cloud Concepts section of the Microsoft Azure Fundamentals (AZ-900) exam. It includes key topics like cloud service models, types of cloud computing, and the benefits of cloud computing. This section accounts for 25-30% of the exam and helps you build a foundational understanding of cloud technologies.

I came up with this issue because I want to block my photoshop to connect to network, it will always check my license and says this product is limited, which is very annoying… So I decided to block it from internet.

This article covers the fundamentals of data modeling, including keys, relationships, attributes, normalization, dependencies, and data integrity, as well as the differences between relational and non-relational databases and constraints in database design.

This article dives into Java threading concepts, covering thread creation, lifecycle, synchronization, and thread safety — essential for writing efficient, concurrent, and deadlock-free programs.

This section covers the new features of Java 8. Like Optional Class and Functional interfaces and also Stream API, and other features.

This section covers the differences between Exception and Error, their hierarchy, various exception types, exception handling methods, throwing exceptions, and creating custom exceptions.

This article explores Java Collections and Map frameworks, detailing data structures like Lists, Sets, Queues, and Maps — essential for effective data management and manipulation in Java.

Key points of Java OOP pillars, Abstract, Polymorphism, Inheritance, Encapsulation. And also about Interface and abstract class.

This article covers essential Java concepts like memory management, data types, object behavior control, and access modifiers, providing a solid foundation for learning and interview preparation.

How to expand photo in Photoshop

我自己开发的一个针对EEG EMG数据自动化处理流程的使用说明。

This article introduces the preprocessing of EEG and EMG data. The purpose is to analyze the correlation of EEG and EMG data on the same timescale. The raw data collected is in TXT format, with EEG and EMG data stored together.

本文章介绍了EEG和EMG数据的预处理，由于目的是对EEG和EMG数据在同一时间尺度上的相关性，所以 其中采集的原始数据为TXT格式，且EMG和EEG数据存放在一起。

English&中文解释, This article discusses the classic Nim game, where players can take any number of stones from n piles, detailing the specific solutions and underlying principles.

I want the center of the dropdown menu aligns with the center of the parent menu item. Using css (stylus). But the width of the dropdown menu is not fixed, the width of the submenu items is dynamic, meaning it can change based on the content inside.