Computer Science · Oct / Nov 2022 · Paper 12 · Question 6

0478

As printed in the paper

The question as text

Jian has a website that uses the Secure Socket Layer (SSL) protocol to make sure that data is kept secure during transmission.

Read automatically from the paper; the printed page above is exact.

Show the answer and mark scheme

6(a)[2]
Any two from:
Check if web address starts with HTTPS
Check if there is a locked padlock
Check the digital certificate for the website
6(b)[1]
Transport layer security // TLS
6(c)[4]
Any four from:
To act as intermediary between browser and web server
to filter/examine/monitor traffic to the web server
to help stop malicious traffic to the web server
To cache frequently viewed web pages
to allow faster response time for requests
to reduce the number of requests the server needs to process
To help prevent DoS
stopping the webserver being overloaded with requests
by redirecting away from server // by stopping DoS attack reaching server
To act as a firewall
6(d)(i)[1]
Spyware
6(d)(ii)[6]
One mark for a correct method, one mark for a corresponding description
Drop down boxes
this means that the keypresses cannot be recorded
Onscreen/virtual keyboard
this means that the keypresses cannot be recorded
Biometrics // by example
this means that the keypresses cannot be recorded
no password entered to be gathered
Anti-malware // anti-spyware
this will scan for/remove any malware that could be recording keypresses
Random/select values requested from password
this means that full password cannot be obtained (in a single login)
Firewall
to prevent the download of any malware that could gather keypresses
6(e)[6]
One mark for each correct term in the correct order
URL
IP address
Web server
Web pages
HTML
Browser

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