Gerald uses a keyboard to enter a website address into the address bar of his browser.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2019). The mark or mark type is shown in brackets.

1. [1] (a) Membrane / matrix / circuit board present at base of keys
2. [1] (a) A key is pressed that presses a switch
3. [1] (a) When a key is pressed it completes a circuit // changes the current in a circuit
4. [1] (a) The location of the keypress is calculated
5. [1] (a) An index of characters is searched to find the corresponding keypress
6. [1] (a) Each character has an ASCII / Unicode value
7. [1] (a) The ASCII / Unicode value has a binary value
8. [1] (a) Keypress generates an interrupt
9. [1] (a) Each character / keypress is added to a buffer to wait to be processed
10. [1] (a) The binary can then be processed by the CPU to action the key press
11. [1] (b) Display a web page
12. [1] (b) Sends a request to the web server
13. [1] (b) Receives data from web server
14. [1] (b) Translates HTML files
15. [1] (b) Processes client-side script, e.g. JavaScript
16. [1] (b) Store favourites
17. [1] (b) Store history
18. [1] (b) Navigation forward and backward
19. [1] (b) Check security
20. [1] (b) Store / access cookies
21. [1] (b) Find specific text within a web page
22. [1] (b) Downloading file from the web
23. [1] (b) Allows a homepage
24. [1] (b) Allows multiple tabs / web pages to be opened
25. [1] (b) Stores data in its cache
26. [1] (c) Hypertext Transfer Protocol Secure // It is a protocol ... that is a set of rules/standards
27. [1] (c) Secure version of HTTP
28. [1] (c) Secure website // secures data
29. [1] (c) Uses TLS/SSL
30. [1] (c) Uses encryption