Blockchain Mock Interview
Master 26 Blockchain interview questions covering consensus algorithms, smart contracts, and cryptography.
Question 7 of 26
Can you change the data in a block once it is written?
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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 technical question addresses information that likely has already been shared earlier in the interview. Interviewers will circle back and ask similar questions throughout the interview to correlate your answers and ensure consistency. Since every interviewer is different, it's difficult to predict their style and the questions they will ask. Try not to get frustrated if you are asked the same question several times during an interview.
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.
"No, it is impossible to change the data in a block once it is written. This feature is what makes blockchains inherently secure. If a block needs to be rewritten, the easiest approach is to remove the block from the Blockchain and create a new block with the correct information."
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