digital currency
使用闪卡高效复习COMPUTER-SCIENCE科目知识点
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5 the internet and its uses
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What is digital currency?
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闪卡 1
问题
What is digital currency?
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答案
Digital currency is a currency that only exists electronically and is stored in digital wallets or accounts, with no physical bank notes or coins.
闪卡 2
问题
True or False? Digital currency is controlled and monitored by central banks or government.
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答案
False. Digital currency is not controlled or monitored by central banks or government (it is decentralised)
闪卡 3
问题
What is another term for digital currency?
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答案
Digital currency can also be known as cryptocurrency.
闪卡 4
问题
What makes digital currencies highly volatile?
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答案
Digital currencies are highly volatile because they are not controlled or monitored by central banks or government, causing their value to fluctuate rapidly in a short period of time.
闪卡 5
问题
Name two examples of digital currencies.
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答案
Two examples of digital currencies are Bitcoin and Ethereum.
闪卡 6
问题
What is a blockchain?
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答案
A blockchain is a digital ledger that records every transaction made with a particular digital currency.
闪卡 7
问题
True or False? Transactions in a blockchain can be altered after they are added.
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答案
False. Transactions are added to the blockchain in a permanent and unalterable way.
闪卡 8
问题
What is the structure of a blockchain?
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答案
A blockchain is made up of "blocks" of transactions that are linked together in a "chain" using cryptographic algorithms.
闪卡 9
问题
How are transactions in a blockchain verified?
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答案
Each transaction in the blockchain must be verified by multiple participants in the network.
闪卡 10
问题
What is the purpose of blockchain verification?
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答案
The verification process ensures that transactions are legitimate and prevents fraudulent activity.