Types of Node Failures and Consensus in Distributed Systems
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Questions and Answers

In the Chord DHT, what does a peer compute first when joining the network?

  • The ids of all other peers
  • Its successor list
  • Its finger table
  • Its own id (correct)

Which peer has authority over the id 3 in the given example?

  • Peer 2
  • Peer 4 (correct)
  • Peer 6
  • Peer 3

What is the key step a new peer takes after computing its id in Chord?

  • Ask any peer who has authority over its id (correct)
  • Request to be added to the successor list
  • Broadcast its id to all peers
  • Compute its finger table

In the Paxos consensus algorithm, what is the role of the leader?

<p>Propose values and coordinate responses (B)</p> Signup and view all the answers

What is a key challenge addressed by distributed hash tables like Chord?

<p>Providing an efficient lookup for key-value pairs (B)</p> Signup and view all the answers

In Bitcoin, what is the main purpose of mining?

<p>To generate new bitcoins and secure the network (B)</p> Signup and view all the answers

What is a key property achieved by consensus protocols like Paxos and Raft?

<p>Consistency (C)</p> Signup and view all the answers

How do DHTs like Chord typically handle node failures and departures?

<p>By using replication and re-hashing keys (B)</p> Signup and view all the answers

What is the $2^{160}$ in the context of the Bitcoin protocol?

<p>The number of possible Bitcoin addresses (A)</p> Signup and view all the answers

In an eventually consistent system, what does 'eventual' refer to?

<p>Reads will eventually return the latest value after some delay (C)</p> Signup and view all the answers

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