The Internet and its Uses Structured Questions | Cambridge O Level Computer Science

(a)

State three differences between the HTTP protocol and the HTTPS protocol.

[3]

(b)

The diagram shows the structure of the laboratory's X.509 Digital Certificate and the browser verification steps. Describe how the patient's web browser verifies that the Digital Certificate is genuine and authentic before displaying the padlock security icon.

[4]

(c)

Explain the privacy risks associated with third-party tracking cookies on medical websites and describe how a patient can prevent them.

[2]

(d)

Describe the role of a web browser's layout and rendering engine when processing retrieved HTML and CSS files.

[2]