QUESTION 3 (a) Using your own words, explain four requirements a Distributed System should satisfy in order to be considered fault tolerant and dependable (b) With the aid of a diagram, describe two mechanisms used in Distributed Systems for Managing Groups and Process Group Membership (c) You are tasked with ensuring fault tolerance in a Distributed System that has replication (i) Describe the Quorum Based Protocol and the concept of k fault tolerance (ii) Explain how you can achieve k fault tolerance in the presence of Byzantine failures In this case, how many processes would be needed to achieve fault tolerance if k were to equal 7

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Question: QUESTION 3 (a) Using your own words, explain four requirements a Distributed System should satisfy in order to be considered fault tolerant and dependable. (b)

QUESTION 3

(a) Using your own words, explain four requirements a Distributed System should satisfy in order to be considered fault tolerant and dependable.

(b) With the aid of a diagram, describe two mechanisms used in Distributed Systems for Managing Groups and Process Group Membership.

(i) Describe the Quorum Based Protocol and the concept of k fault tolerance.

(ii) Explain how you can achieve k fault tolerance in the presence of Byzantine failures. In this case, how many processes would be needed to achieve fault tolerance if k were to equal 7?

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