O-LevelComputer ScienceThe Internet and its uses2210/11 · May/June 2016 · Q64 Marks
Secure socket layer (SSL) is used in the security of information on Internet websites.
- (a)State how it is possible for a user to know that a website is secure by looking at the web address.[1]
- (b)Describe three of the stages a web browser goes through to detect whether a website is secure.[3]
Mark scheme
Marking points from the official mark scheme (May/June 2016). The mark or mark type is shown in brackets.
- [1] (a) protocol ends in “s”
- [1] (a) use of https
- [1] (b) requests web server to identify itself/view the (SSL) certificate
- [1] (b) receives a copy of the (SSL) certificate, sent from the webserver
- [1] (b) checks if SSL certificate is authentic/trustworthy
- [1] (b) sends signal back to webserver that the certificate is authentic/trustworthy
- [1] (b) starts to transmit data once connection is established as secure
- [1] (b) if website is not secure browser will display an open padlock/warning message
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