Communication Channels and Clocks in Distributed Systems
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Questions and Answers

What is the limitation of Lamport clocks?

Two concurrent events can have the same timestamp.

How can total ordering be achieved in distributed systems?

By using a process identifier along with the timestamp (Vector Clocks).

What is the purpose of Vector Clocks?

To enhance Lamport Clocks by enabling detection of concurrent events alongside partial ordering and causality violations.

How are Vector Clocks structured?

<p>As a vector with one entry for each process in the system.</p> Signup and view all the answers

What happens during the initialization of a Vector Clock?

<p>All entries in the vector are set to 0.</p> Signup and view all the answers

How is an internal event handled in Vector Clocks?

<p>By incrementing the corresponding element in the vector for the process where the event occurs.</p> Signup and view all the answers

What should be done when sending a message with Vector Clocks?

<p>Increment the sending process's element in the vector and include the vector clock in the message.</p> Signup and view all the answers

How is a received message processed with Vector Clocks?

<p>Update the receiving process's vector by taking the element-wise maximum of its current vector and the received vector clock.</p> Signup and view all the answers

Why is considering faults important in distributed systems?

<p>Faults are common and need to be considered when designing distributed systems.</p> Signup and view all the answers

What are examples of faults in distributed systems?

<p>Processor crashes, communication link failures, slow processing, message omissions.</p> Signup and view all the answers

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