Question: 8.What is a DoS attack? What is DDoS attack? Describe the roles of botnets in DDoS attack. 9.How does IPsec protect the contents in transmission?

8.What is a DoS attack? What is DDoS attack? Describe the roles of botnets in DDoS attack.

9.How does IPsec protect the contents in transmission?

10.What is the function of IKE protocol? Give an example of application where IKE is used.

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