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WorksheetsBlockchain Day 2 Final Quiz
Total questions: 10
Worksheet time: 11mins
Blockchain Technology has various characteristics. Which of the following best summarises what you have learned?
Decentralised, Peer to Peer Transactions and Cryptography
Cryptography, Distributed and Peer to Peer Transactions
Decentralised, Peer to Peer Transactions and Distributed
Cryptography, Distributed and Centralised
What does hashing means in Blockchain Technology?
Plain text to Hashed Text to Hash Functions
Plain text to Public Key to Hash Text
Plain text to Hash Functions to Security Key
Plain text to Hash Functions to Hashed Text
Select the answers that best suit why Blockchain Mining is considered a peer to peer process. (More than 1 answer or none)
Transactions are passed around from nodes to nodes.
Solving complex computational mathematics problems.
Node that solves the math problem wins a reward such as Bitcoin.
None of the above.
Is it true that Blockchain Cryptography involves 2 keys?
No
Yes
Sometimes
Bi-weekly
The first block in Blockchain database is called:
(a)
What are the main differences between Proof of Work (POW) and Proof of Stake (POS) Consensus Algorithm? (More than 1 answer)
POW has no reward while POS is given a reward for their work.
There are no differences
POW uses computing power while POS stake their coins on the blocks.
POS has validators while POW has miners.
Whenever you want to send a payment to a recipient via a blockchain, you ask for?
Blockchain Address
Blockchain Key
Blockchain Number
Blockchain Wallet
Despite the potentials of Blockchain Technology, why are there still risk in Blockchain? (More than 1 answer)
Hackers can still hack your computing power with malware.
Inability to recognise legitimate cryptocurrencies versus scams.
Blockchains are disrupting business models and reducing revenue.
Speculation of investments in bitcoin, ether and many other coins poses un-settlement in the blockchain space.
Digital Signatures uses what infrastructure to function?
Digital Wallet to Function
Consensus Algorithm to Function
Private and Public Key to Function
Blockchain Mining to Function
Describe Your Ethereum Blockchain Idea using Smart Contract. Have fun!
