This is part of a series of backend assignments at Upperlink where I intern.

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1.a. By the end of next year, state 5 programming languages/frameworks you will be writing
    
    I.    Laravel
    II.   Angular
    III.  React
    IV.   Vue
    V.    React Native
  
  b. What is your most preferred programming stack
    
    MERN:
      M - Mongo DB
      E - Express JS
      R - React
      N - Node JS
      
  c. Write the top 5 buttons you click the most
  
    I.    Spacebar
    II.   Enter
    III.  Tab
    IV.   Ctrl
    V.    Backspace
    
  d. State what top 5 software you will be using by the end of next year
    
    I.    IntelliJ IDEA
    II.   Android Studio
    III.  Bitbucket
    IV.   Netlify
    V.    Jest  
  
  
 2. a. State 10 differences between a try/catch block and a callback error handler
    I.   Syntax: A try/catch block uses the keywords "try" and "catch" to enclose code that may throw an exception, 
        whereas a callback error handler typically uses a function passed as an argument to handle errors.

    II. Flow control: A try/catch block stops the execution of the current code block and transfers control to the 
        catch block when an exception is thrown, whereas a callback error handler typically allows the code to continue 
        executing and calls the error-handling function asynchronously.

    III. Scope: The scope of a try/catch block is the block of code enclosed by the try and catch keywords, 
        whereas the scope of a callback error handler is determined by the function it is passed to.

    IV. Error handling: A try/catch block allows you to handle specific exceptions and their associated error 
        messages in one place, whereas a callback error handler may require separate error-handling functions 
        for different types of errors.

    V. Synchronous vs asynchronous: A try/catch block is used for synchronous code, whereas a callback error 
        handler is typically used for asynchronous code.

    VI. Nesting: Try/catch blocks can be nested, whereas callback error handlers typically cannot.

    VII. Re-throwing: An exception can be re-thrown in a catch block, but cannot be re-thrown in a callback error handler.

    VIII. Context: Try/catch blocks provide context of the error and where it occurred, whereas callback error handlers 
        typically, only provide the error message or object.

    IX. Order of execution: Try/catch blocks are executed in the order in which they appear, whereas callback error 
        handlers may be executed out of order.

    X. Return value: A try/catch block does not return a value, whereas a callback error handler may return a value or a promise.
    
    b. Give 2 qualifiable reasons of when to use async/await 
    
    
 3. Give 10 differences and 10 similarities between Mongoose upsert, mongoose insert and mongoose set