Practice Phase 2: Accept (or "acceptance" Phase) (1.3.2.2) - Consensus, Paxos and Recovery in Clouds
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Phase 2: Accept (or "Acceptance" Phase)

Practice - Phase 2: Accept (or "Acceptance" Phase)

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Define the role of a Proposer in the Paxos algorithm.

💡 Hint: Think about who initiates consensus in the Paxos protocol.

Question 2 Easy

What happens if a Proposer receives a Promise from a minority of Acceptors?

💡 Hint: Consider the definition of majority in the context of consensus.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What phase follows the Prepare phase in the Paxos algorithm?

Commit Phase
Acceptance Phase
Election Phase

💡 Hint: Think about the order of operations in the Paxos protocol.

Question 2

True or False: A value can be accepted by an Acceptor if it has not previously made a Promise regarding the proposal number.

True
False

💡 Hint: Consider how promises relate to proposals.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

In a scenario where three Proposers try to propose values at the same time, how might a distributed system ensure that only one of their values is chosen? Discuss mechanisms that can be employed.

💡 Hint: Consider the strategies mentioned in class.

Challenge 2 Hard

Analyze a situation where an Acceptor consistently receives Accept messages with a proposal number lower than what it has previously promised. What action should the Acceptor take and why?

💡 Hint: Think about how promises enforce rules in Paxos.

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Reference links

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