Question: a) [6 marks] Explain the differences between threats, vulnerabilities, and attacks. b) [4 marks] In the context of data communications, what is integrity and

a) [6 marks] Explain the differences between threats, vulnerabilities, and attacks. b) [4 marks] In the context of data communications, what is integrity and what are some ways that it is ensured? c) [4 marks] What is two-factor authentication (2FA)? d) [6 marks] Why does public key cryptography (e.g. as used on the Internet) need a Public Key Infrastructure (PKI)?

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