
B1. Blockchain technology and Bitcoin
Authored by Cristina Solà
Mathematics
University
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Blockchain is an append-only ledger with integrity by design
True
False
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bitcoin is a permissioned blockchain that
can only be writen by authorized users
True
False
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A cryptocurrency is a digital currency based on
cryptography and a consensus protocol
True
False
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Bitcoin protocol is specified in an RFC
True
False
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Who validates Bitcoin transactions?
Only miners
Only full nodes
Both miners and full nodes
A subset of miners
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the purposes of a wallet?
Key generation and storage
Transaction creation
Transaction broadcasting
All the answers are correct
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What task does not correspond to network nodes?
Relay transactions
Validate data
Create new bitcoins
Maintain the P2P network
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