Virtual Labs

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Double Spending and Its Prevention in Blockchain

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What is double spending in the context of blockchain?

a: A cryptocurrency that has twice the market value. Explanation

Explanation

b: The act of spending the same cryptocurrency more than once. Explanation

Explanation

c: A blockchain with two separate chains. Explanation

Explanation

d: A technique to speed up transaction processing Explanation

Explanation

How does a blockchain system prevent double spending?

a: By increasing the block size. Explanation

Explanation

b: By allowing every user to validate their own transactions. Explanation

Explanation

c: By using decentralized consensus mechanisms. Explanation

Explanation

d: By encrypting all transactions. Explanation

Explanation

What does the term 'immutable' mean in the context of blockchain?

a: Easily altered or changed. Explanation

Explanation

b: Unable to be changed or modified once recorded. Explanation

Explanation

c: Subject to constant updates and revisions.. Explanation

Explanation

d: Permanently deleted from the blockchain.. Explanation

Explanation

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