Which of the following best describes how Proof of Work (PoW) secures the blockchain?

It requires miners to solve a cryptographic puzzle to validate transactions

What is the role of miners in a Proof of Work system?

Solve math problems to validate transactions

Which of these is an advantage of cryptocurrency?

Global transactions with low fees

What happens when a transaction is added to the blockchain?

It becomes public and unchangeable

What’s the possible future of cryptocurrency?

It could be more regulated and used daily

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Crypto Quiz

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Questions 15

Answers

1
Which of the following best describes how Proof of Work (PoW) secures the blockchain?
It stores all wallet passwords in the cloud
It randomly selects users to approve transactions
It scans user identities before confirming transfers
It requires miners to solve a cryptographic puzzle to validate transactions
2
What is the role of miners in a Proof of Work system?
Solve math problems to validate transactions
Create wallets
Block hackers
Changing coin prices
3
Every transaction on the blockchain includes the personal identity of the sender and receiver.
True
False
4
Cold wallets are connected to the internet but are only used during specific hours for safety.
True
False
5
Which wallet type is considered safer from hacking?
Hot wallet
Cold wallet
Email wallet
Public wallet
6
Which of these is an advantage of cryptocurrency?
Global transactions with low fees
Paper trails
Fixed prices
High bank fees
7
What does “decentralized” mean in crypto?
Controlled by banks
No central authority
Stored in one server
Operated by a CEO
8
What’s a major disadvantage of cryptocurrency?
No internet access
Too many coins
Too many banks involved
Price volatility
9
What is the purpose of cryptography in crypto?
Making memes
Speeding up loading
Securing transactions
Changing coin prices
10
Why are cold wallets more secure?
They use 5G
They stay offline
They’re hidden in the cloud
They change passwords hourly
11
Which of these is a real-world use of crypto?
Printing documents
Buying property
Sending faxes
Renting DVDs
12
What happens when a transaction is added to the blockchain?
It’s deleted after a day
It disappears
It goes to a bank for review
It becomes public and unchangeable
13
Which technology does cryptocurrency rely on?
JavaScript
Cloud storage
Blockchain
Bluetooth
14
What is cryptocurrency?
Paper-based currency
A digital form of money
Physical money
Stock investment
15
What’s the possible future of cryptocurrency?
It could be more regulated and used daily
It will become the official currency everywhere overnight
It will disappear in a year
It will be banned globally

Crypto Quiz Flashcards | StudBud