Glossary
Every term the courses use, defined in one line and then in a paragraph. Written to be read out of order.
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A confident, fluent, false answer.
Fabricated output produced by exactly the same process as correct output, which is why it looks equally convincing. Inherent to how models work rather than a bug to be patched. Fluency carries no information about accuracy.
The structure and meaning of a page.
Declares what things are: a heading, a button, a list. Content that lives in the HTML is visible to search engines, screen readers, and slow connections; content built later by JavaScript is not, until it runs.
The request-and-response protocol of the web.
The rules by which a client asks and a server answers. A request is a method, a path, headers, and maybe a body; a response swaps the method for a status code. Stateless by default.
See also Status code, Stateless, Endpoint
A cookie flag that hides it from JavaScript.
Marks a cookie unreadable by page scripts, so a single injected script cannot steal a session. Tokens stored in local storage have no equivalent protection.