Practice Logical (or Lamport) Ordering And Timestamps: Causality Without Absolute Time (1.6)
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Logical (or Lamport) Ordering and Timestamps: Causality without Absolute Time

Practice - Logical (or Lamport) Ordering and Timestamps: Causality without Absolute Time

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does the happens-before relation signify?

💡 Hint: Consider time and influence.

Question 2 Easy

What are Lamport timestamps used for?

💡 Hint: Think about logical events.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the purpose of a Lamport timestamp?

To provide absolute time
To establish causal ordering
To synchronize clocks

💡 Hint: Remember the relation to causality.

Question 2

In vector timestamps, what do the components represent?

💡 Hint: Think about tracking events.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Consider 3 processes A, B, and C with the following events and timestamps: A1: 1, A2: 2, B1: 1, C1: 1. If A sends a message to B after A1 and before A2, what can you deduce about their timestamps?

💡 Hint: Think about how the sending event influences B's clock.

Challenge 2 Hard

You have a system with 4 processes. Process A's vector timestamp is [2,0,1,3] and Process B's is [1,2,0,2]. Determine their causal relationship.

💡 Hint: Compare the vectors for magnitude.

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Reference links

Supplementary resources to enhance your learning experience.