Blockchain Mock Interview
Master 26 Blockchain interview questions covering consensus algorithms, smart contracts, and cryptography.
Question 20 of 26
Is a 51% attack related to double-spending, and if so, how?
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William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
This is an example of a follow-up question. Follow-up questions are usually related to an answer you provided earlier in the interview. The purpose of a follow-up question is to clarify a point, explore the topic in more detail, or verify that your answers are consistent throughout the interview. Follow-up questions can occur at any time during the interview. Taking notes during the interview will help you prepare for follow-ups and be consistent with your answers.
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
"A 51% attack is similar to double-spending, and that both of these involve using the same token or coins multiple times. These types of attacks occur when an individual or group of Miners on the blockchain attempt to control more than 50% of the network's computing power. If this occurs, the Miners can prevent confirmation of some of the transactions and payments between users. If they gain disproportionate control of the network, they can reverse transactions and gain control of the tokens for their own use."
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