
Chap7-Class 1 Blockchain
Authored by Carlin CHU
Computers
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one is not an appropriate blockchain application?
Smart contract
Centralized record storage
Litecoin
Product supply chain logistics: verify the sources of your food
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one is not a benefit of blockchain application?
Relatively lower processing cost than credit card transaction processing
Everyone can participate in managing and monitoring the ledger
Suitable for storing business transactions written in papers
None of the above (i.e. all other options are the benefits)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a ________ blockchain network, each member in the network has a copy of the exact same data in the form of a distributed ledger. If a member's ledger is altered, it will be rejected by the majority of the members in the network.
Centralized trust
Decentralized trust
Mutual trust
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one is not a cryptocurrencies?
Bitcoin
Litecoin
Ethereum
Dogecoin
None of the above (i.e. all other options are valid)
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one is not a concern in bitcoin mining?
Electricity consumption
The number of users in the Ledger
Total computational power
None of the above (i.e. all other options are valid)
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one is not an essential component in Blockchain?
Signature (Hash)
Remark
ounce
All are essential components
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which one is not a routine task done by bitcoin miners?
Keep the transaction records (in blockchain)
Make sure all transactions are valid
Remove transaction records (in blockchain)
All verified valid transactions are packed in a block and published to the public
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