JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Exercise - Update New User Database with Splice

The video tutorial guides viewers through an exercise on updating usernames using the splice method. It begins with a context of working at a startup and emphasizes the importance of monitoring usernames. The exercise involves declaring a function to update usernames, logging and initializing usernames in the console, and replacing a username in an array. The tutorial concludes with encouragement and a promise of a solution in the next video.

What should you do after updating the usernames in the array?

What is the significance of the term 'apprentice level' in the context of this exercise?