Edexcel IGCSEComputer ScienceGeneral Applications6 Marks
A web server hosts several websites.
- (a)State the purpose of a web server.[2]
- (b)Explain the difference between HTTP and HTTPS.[2]
- (c)Web browsers use cookies. Explain one purpose of a cookie.[2]
Mark scheme
Marking points from the official mark scheme. The mark or mark type is shown in brackets.
- (a) • To store website files / web pages (1); • To respond to requests from web browsers (1); • To deliver web pages to clients (1); • To manage website traffic (1)
- (b) • HTTPS is secure / HTTP is not secure (1); • HTTPS uses encryption / HTTP does not (1); • HTTPS uses SSL/TLS (1)
- (c) • To store user preferences/settings (1) so a website remembers previous choices (1); • To store login information (1) so a user doesn't have to log in repeatedly (1); • To track user activity/browsing habits (1) for targeted advertising / analytics (1); • To store items in a shopping cart (1) so items are remembered between sessions (1)
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