chapter7
Authored by Nujood A
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35 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The blockchain ledger records all transactions as blocks in the blockchain
True
False
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proof of work achieved by solving a mathematical problem in order to get the hash value which is smaller than a certain value set by the network
True
False
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is not a blockchain type
Public
Hybrid
Decentralised
Private
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bitcoin is the famous example of
Public blockchain
Private blockchain
Hybrid blockchain
None
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the security method can be used to protect blockchain transaction
Public/private keys
Hash function
Digital signature
All of these are correct
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Consensus in terms of blockchain means
A protocol where all nodes cooperate with each other
A type of network
A type of hardware
None
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The main purpose of using cryptography is:
To add block to the existing blockchain
To authenticate data sent using a public key
To replace a digital signature
To request a blockchain transaction
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