1. A critical part of any full stack application is securely connecting the backend application to the Front end application. To facilitate this the Vue.js application uses Axios. What does axios do and how does it work? Cite your references

2. There is a popular alternative to Axios called fetch(). Explain the difference between these two JavaScript libraries. Again, cite your references.

3. You have completed building the backend and front end of a full stack application. Do a little research and determine the average salary for a full stack developer.