Which is faster: Using bootstrap CDN or downloaded

I have a single page website:

• index.html
• /css
  • /css/style.css
• /js
  • /js/main.js

Will my website load quicker when using the Bootstrap CDN (https://getbootstrap.com/docs/4.4/getting-started/download/) or to download the compressed .js and .css files (i.e. bootstrap.min.css & bootstrap.bundle.min.js?

• index.html
• /css
  • /css/bootstrap.min.css
  • /css/style.css
• /js
  • /js/bootstrap.bundle.min.js
  • /js/main.js

I am also wondering the same question for jQuery.