Question: 1. Explain the different RPC semantics and how they can be implemented : at-most-once, exactly-once, at-least-once. 2. Given an example to show where direct dependency

1. Explain the different RPC semantics and how they can be implemented : at-most-once, exactly-once, at-least-once.

2. Given an example to show where direct dependency clocks fail to capture causality.

3. Modify Lamport's mutual exclusion algorithm to support reader-writer locks. That is, multiple concurrent readers are OK as long there are no writers.

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