Quiz will ask 20 randomly selected questions with allotted time of . You can take the quiz more than once. Once you submit the quiz, you can review how you have done, the correct the answers for each questions and the explanation for the correct the answer.
7 Modules
What is the primary purpose of a blockchain?
To create a decentralized database
To facilitate peer-to-peer transactions without intermediaries
To store large amounts of data efficiently
To provide a platform for smart contracts
Which of the following statements about blockchain immutability is true?
Once data is recorded on a blockchain, it cannot be altered or deleted.
Immutability is guaranteed by cryptographic hashing.
Immutability applies only to public blockchains.
Immutability can be reversed by consensus of the majority of nodes.
What role do consensus mechanisms play in blockchain technology?
They ensure that all nodes in the network agree on the state of the blockchain.
They provide a method for encrypting data on the blockchain.
They are responsible for creating new blocks in the blockchain.
They determine the transaction fees for users.
Which of the following are characteristics of a decentralized blockchain?
Single point of failure
Distributed ledger technology
Permissionless access
Centralized control
What is the significance of the 'genesis block' in a blockchain?
It is the first block in the blockchain.
It contains the transaction history of the entire blockchain.
It is used to initialize the blockchain network.
It serves as a reference point for all subsequent blocks.
7 Modules