O-LevelComputer ScienceThe Internet and its uses2210/12 · May/June 2015 · Q46 Marks
State what is meant by the term SSL.
- (a)State what is meant by the term SSL.[1]
- (b)The following stages take place when a user wishes to access a secure website. Put each stage in sequence by writing the numbers 1 to 6 in the column on the right. The first one has been done for you. Stage the encrypted data is then shared securely between the web browser and the web server the web browser attempts to connect to a website which is secured by SSL the web server sends the web browser a copy of its SSL certificate the web browser requests the web server to identify itself the web server will then send back some form of acknowledgement to allow the SSL encrypted session to begin the web browser checks whether the SSL certificate is trustworthy; if it is, then the web browser sends a message back to the web server[5]
Mark scheme
Marking points from the official mark scheme (May/June 2015). The mark or mark type is shown in brackets.
- [1] (a) Any one from: – secure sockets layer – encrypts data being transmitted – use of https – use public and private keys
- [5] (b) 1 mark for each number in the correct order, next to the correct stage. Stage Sequence number the encrypted data is then shared securely between the web browser and the web server -> 6 the web browser attempts to connect to a web site which is secured by SSL -> (1) the web server sends the web browser a copy of its SSL certificate -> 3 the web browser requests the web server to identify itself -> 2 the web server will then send back some form of acknowledgement to allow the SSL encrypted session to begin -> 5 the web browser checks whether the SSL certificate is trustworthy; if it is then the web browser sends a message back to the web server -> 4
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