ITPEC IP October 2023 Question 24

The page is shown with the settings tailored to a returning user — a cookie lets a website recognise a browser that has visited before.

A cookie is a small piece of data that a web server asks the browser to store. On every later request to the same site, the browser sends the cookie back, so the server can tell who the visitor is and restore the language, layout, log-in state or cart contents saved for that user. HTTP itself keeps no memory between requests; cookies supply it.

Answer (d)

Why not others:

• •(a) — delivering e-mails that match a registered genre and preference is a subscription (mail magazine) service; the preferences are held in the sender's reader database, not in a browser cookie
• •(b) — showing articles and advertisements related to the search words is search-linked (listing) advertising, chosen from the keywords of the search itself
• •(c) — notifying the other blogger when a link to their blog is posted is a trackback (pingback), a function between blog servers

Key rule: A cookie is state stored in the browser and returned to the same site, which is what lets a stateless HTTP site remember a user between visits.

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