1. How do you create a new repository in GitHub? A GitHub repository is a centralized location to store, manage, and track changes to your project files. It supports collaboration and version control. Log in to your GitHub account. Click the “+” icon in the top-right corner and select “New repository”. Enter a repository name […]

1. How do you disable startup programs to boost boot speed? Disabling unnecessary startup programs can significantly reduce boot time and improve overall system responsiveness. Press Ctrl + Shift + Esc to open Task Manager. Click the Startup tab. Right-click any app you don’t need at startup. Select Disable. 2. How can you enable Fast […]

1. How do you find files based on specific criteria using the find command? The find command is a powerful tool for locating files and directories based on attributes like name, size, and modification time. find /path/to/search -name “*.log” -size +10M -mtime -7 This example searches for log files larger than 10MB modified within the […]

1. How do you use a Common Table Expression (CTE)? A Common Table Expression (CTE) is a temporary result set defined within the execution scope of a single SQL statement. It simplifies complex queries by breaking them into readable parts. WITH EmployeeCTE AS ( SELECT id, name, salary FROM employees WHERE salary > 50000 ) […]

🔍 What is Java HashMap? Working Explained with Example Java HashMap is a powerful data structure from the Java Collections Framework that stores elements as key-value pairs. It allows fast access to data by leveraging hashing, making operations like insertion, lookup, and deletion highly efficient. HashMap is ideal when you need to associate unique identifiers […]