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RRK1 - Coggle Diagram

- - - - In-order Traversal: Traverse left subtree → Visit root node → Traverse right subtree.
      - Pre-order Traversal: Visit root node → Traverse left subtree → Traverse right subtree.
      - Post-order Traversal: Traverse left subtree → Traverse right subtree → Visit root node.
- - - - O(1): Constant time (e.g., accessing an element in an array).
      - O(n): Linear time (e.g., traversing a list of n elements).
      - O(log n): Logarithmic time (e.g., binary search in a sorted array).
      - O(n^2): Quadratic time (e.g., nested loops).
- - - - exec(): Replace the current process image with a new one (used after fork() to run a new program).
      - fork(): Create a new process by duplicating an existing one.
      - write(): Write data to a file.
      - read() : Read data from a file.
  - - - Virtual Memory: Programs use virtual addresses that are mapped to physical memory by the kernel.
      - Paging: Memory is divided into small, fixed-size chunks called pages.
      - Swapping: When there’s not enough physical memory, the system can temporarily move inactive pages to a special area on the disk called the swap space.
  - - - Owner: The user who created the file.
      - Group: A group of users who share access to the file.
      - Others : Everyone else.
    - - r (read): Permission to read the file.
      - w (write): Permission to modify the file.
      - x (execute): Permission to run the file as a program (only for executable files).
  - - - ext4: A common Linux file system
      - Inodes: Every file has an inode which stores metadata (such as the file’s size, permissions, etc.) but not the file's actual content.
      - Hard Links and Soft Links
        
        Hard links are multiple references to the same inode (same file content).
        
        Soft links (symbolic links) are pointers to another file (like shortcuts).
- - - - DELETE
      - GET
      - PUT
    - - PATCH
      - POST
  - - - DNS Lookup Failures
        
        nslookup
        
        ping
      - Inspecting HTTP Requests
        
        HTTP Response Codes
      - Browser Rendering Problems
        
        Elements Tab in Chrome Dev tools
      - JavaScript Errors
        
        Console in Chrome Dev Tools
  - - - Elements: Inspect and modify the HTML and CSS of the page.
      - Console: View errors and log output from JavaScript. You can also run JavaScript commands directly here.
      - Network: Monitor all HTTP requests and responses, including headers, status codes, and load times.
      - Sources: Debug JavaScript code by setting breakpoints and stepping through the execution.
      - Performance: Analyze the performance of the web page, including render time, script execution time, and more.
- - - - Browser
    - - Translation Layer and Encryption
    - - Starting and Maintaing sessions
    - - IP
      - Switch
      - Router
    - - Bridge
    - - Hub
      - Repeater
      - Modem
  - - - Round Robin: Distributes requests evenly across all servers.
      - Least Connections: Sends traffic to the server with the fewest active connections.
      - Geographic Load Balancing: Routes traffic based on the user's geographic location.
- - - - FCFS
      - Shortest Job Next
      - Priority Scheduling