Discussion
What is a cookie in the context of web browsing?
Answer: B
Correct answer: A small piece of data a website stores in the browser
A cookie is a small piece of data a site asks the browser to store and to send back with every subsequent request to that site. It exists because HTTP is stateless: the server remembers nothing between requests, so a cookie is what allows it to recognise a returning visitor. That is how a login persists, how a shopping basket survives navigation, and how preferences are remembered. They are classified in useful ways. A session cookie lasts until the browser closes; a persistent one has an expiry date. A first-party cookie belongs to the site being visited; a third-party cookie belongs to another domain embedded in the page, which is what allows advertisers to track a user across sites - and what privacy regulation such as the GDPR addresses. A cookie is inert data, not a program, so it cannot itself be a virus.
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