Block Chain Technologies (CS-802 (A)) - Important Questions

Compare public, private and consortium blockchains in terms of key characteristics and give use cases for each type.

What are Merkle trees? How important are Merkle trees in blockchains?

Explain common blockchain validation techniques such as proof-of-work and proof-of-stake.

What is double spending? Is it possible to double spend in a blockchain system?

Explain the design issues for permissioned blockchains and their use cases.

What are some practical applications of Byzantine fault tolerant systems, and how are they used in industry?

How do traditional cross-border payment methods differ from blockchain-based methods in terms of speed, cost and security?

Compare HashCash PoW with Bitcoin PoW. Also discuss various types of attacks on PoW.

Which cryptographic algorithms are used in blockchain? Explain in detail.

What is a hash function? Write down the properties of a hash function.

What is Hyperledger Fabric and how does it differ from other blockchain platforms?

What is a smart contract and how is it used in the Ethereum blockchain?

Explain Lamport-Shostak-Pease BFT algorithm.

Explain the following terms (any three): (i) Transaction validation (ii) Digital signature (iii) Proof of Burn (iv) Permissioned model