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Blockchain Developer Test 1
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What is a genesis block?
The first block of a blockchain
A famous block that hardcoded a hash of the Book of Genesis onto the blockchain
The first block after each block halving
The 2nd transaction of a blockchain
Correct!
Wrong!
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Where can cryptocurrency be purchased?
A Bitcoin ATM
A private transaction
An exchange
All of the above
Correct!
Wrong!
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Describe a DAPP.
A decentralized application
A side dish
An example of a blockchain
A kind of digital currency
Correct!
Wrong!
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Describe a node.
The Blockchain
A pc connected to a blockchain
An exchange
A kind of digital currency
Correct!
Wrong!
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Describe the private key.
A public key distributed
A key that cannot be distributed to the general public
A key that unlocked a hidden door
A key you have on a key chain
Correct!
Wrong!
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Describe cold storage.
A secret key with internet access
A private key that isn't linked to the internet
An office wallet
Where you can hang your coat
Correct!
Wrong!
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Uses of asymmetric encryption
Only private keys
Private and public keys
Proof of stake
Only public keys
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Wrong!
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How does Proof of Stake work?
A secret phrase required to access an exchange
How to create private keys
A protocol for transaction and block verification
A certificate required to utilize the Blockchain
Correct!
Wrong!
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Who invented Bitcoin?
Samsung
John Mcafee
China
Satoshi Nakamoto
Correct!
Wrong!
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Describe the hash function.
Returns a fixed-length string of numbers and letters after accepting input of arbitrary length.
Liquid
Bitcoin
Cryptocurrency
Correct!
Wrong!
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What exactly is a blockchain?
A kind of digital currency
An exchange
An integrated ledger
A peer-to-peer network distributed ledger
Correct!
Wrong!
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