1) What is expected by a decentralized solution for a successful supply chain management?
solution) a) No one should trust each other, however they should cooperate.
2) What does trust mean, in a decentralized blockchain?
solution) a) to secure the chain usung specific protocols
b) to validate the transactions and blocks for tamper proofing.
c) to execute and confirm the transaction.
3) Where are the transactions recorded in a blockchain?
solution) b) On a distributed immutable ledger.
4)What is one of the requirements of a secure hashing function?
solution) b) it is a one way function.
5) For 512 bit hash function, the attacker needs to compute how many hash operations in order to find two matching outputs?
solution) a) 1.158*10^77
6)Which of the following statements is correct about Cryptographic hash function?
solution) c) A small change in message impacts the hash function.
7) What are the security features of a hash function?
solution) a) Deterministic, b) puzzle-friendly, c) collision-resistance d) preimage resistance
8) SHA-512 hashing algorithm used by Bitcoin blockchain to determine the hash of block.This above statement is True or False.
solution) b) False
9) If a participant node tampers with a block, it results in which action(s).
solution) a) Modification of hash,
b) Mismatching of hash values,
c) The local chain of node rendered in an invalid state.
10) What is the hash value of "swayam"if SHA-256 is use?(case sensitive)
solution) a) 3bb8668bb7a3f9e127d4429d24ca0de0c3247843ccc528d9162d46d6ad699a63
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