1. How do you create a new repository in GitHub? Repositories are used to store and manage project files and version history. Go to GitHub → Click on “New” → Enter repository name → Choose visibility (Public/Private) → Click “Create repository” 2. How do you clone a repository to your local machine? Cloning a repository […]

1. How do you disable startup programs to boost boot speed? Startup apps slow down system boot. Disable unnecessary ones via Task Manager. Press Ctrl + Shift + Esc → Startup tab → Right-click unwanted apps → Disable 2. How can you enable Fast Startup? Fast Startup reduces boot time by saving system state to […]

1. How do you find files based on specific criteria using the find command? The find command searches for files and directories based on conditions like name, size, or modification time. _find /path/to/search -name “.log” -size +10M -mtime -7_* 2. How do you search for a specific pattern in files using grep? The grep command […]

1. How do you use a Common Table Expression (CTE)? CTEs simplify complex queries by creating temporary result sets that can be referenced within the main query. WITH EmployeeCTE AS (    SELECT id, name, salary    FROM employees    WHERE salary > 50000)SELECT * FROM EmployeeCTE; 2. How do you use analytical functions like RANK()? Analytical functions provide rankings or […]

What is Java HashMap? Working Explained with Example Java HashMap is a data structure that stores data in key-value pairs, allowing efficient retrieval, insertion, and deletion of values based on their keys. It uses hashing to map keys to buckets, enabling fast access. How HashMap Works Key-Value Pairs: Each entry consists of a unique key […]