What is a blockchain?

Blockchain 101

Flashcard
•
Computers
•
12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
Back
A distributed and immutable ledger.
2.
FLASHCARD QUESTION
Front
What does a block in a blockchain contain?
Back
A list of transactions, a timestamp, and a hash
3.
FLASHCARD QUESTION
Front
What is the role of cryptography in blockchain?
Back
To ensure data privacy and secure transactions
4.
FLASHCARD QUESTION
Front
What is a key feature of blockchain that ensures security?
Back
Tamper-resistant ledger
5.
FLASHCARD QUESTION
Front
What is the consensus mechanism in blockchain?
Back
A process by which participants agree on the state of the ledger
6.
FLASHCARD QUESTION
Front
Which of the following is a popular consensus mechanism in blockchain? Options: Data Validation Protocol (DVP), Proof of Work (PoW), Transaction Evaluation System (TES), Hash Authorization Protocol (HAP)
Back
Proof of Work (PoW)
7.
FLASHCARD QUESTION
Front
What is a "smart contract"?
Back
A self-executing agreement with terms directly written into code
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