486 interview questions for Blockchain Expert (2025)

40 votes2762 runs0 comment

19 votes2718 runs0 comment

18 votes1204 runs0 comment

machine learning

missing data

Martinat Apr 4, 2022

17 votes2734 runs0 comment

16 votes2698 runs0 comment

16 votes2645 runs1 comment

15 votes782 runs0 comment

Martinat Mar 14, 2022

14 votes758 runs0 comment

machine learning

deep learning

Martinat Sep 19, 2022

13 votes475 runs0 comment

virtual machine

11 votes2659 runs4 comments

11 votes891 runs0 comment

scikit-learn

logistic regression

10 votes2673 runs0 comment

10 votes2576 runs0 comment

10 votes1260 runs1 comment

9 votes1171 runs0 comment

hyperparameters

Martinat Mar 15, 2022

9 votes1090 runs0 comment

machine learning

missing data

Martinat Apr 4, 2022

8 votes2643 runs0 comment

8 votes767 runs0 comment

neural network

Martinat Apr 4, 2022

8 votes579 runs0 comment

NLP (Natural language processing)

named entity recognition

7 votes2521 runs0 comment

486 interview questionsfor Blockchain Expert (2025)

Test your technical skills before an interview of Blockchain Expert with 486 corrected questions. Beginner, Intermediate or Expert level.

486 interview questionsfor Blockchain Expert (2025)

Test your technical skills before an interview of Blockchain Expert with 486 corrected questions. Beginner, Intermediate or Expert level.

Write a SQL query to retrieve the list of employees with a salary greater than 5100.

Select only distinct values in a column using SQL

How to handle missing data in a given training data set ?

Write a SQL query to insert data into a table

Which SQL keyword is used to sort the result of a SELECT statement?

Update a column in an SQL table

What is the missing word in the following sentence: Overfitting is the production of a model that corresponds too closely to the training data set and may therefore fail to fit other data sets and so fail to perform any reliable forecast.

What is the relation between Artificial intelligence (AI), machine learning and deep learning?

What does EVM stand for?

Write the SQL query to delete a column from a table

What is the value of the decision threshold used with logistic regression in Scikit-learn?

How to delete an SQL table?

Write a SQL query to retrieve the products with a price less than 1000 and sort the results in descending order of price.

Write a SQL query to retrieve the titles of books written by 'John Smith'.

The validation set is used to provide frequent and unbiased evaluations of the model’s fit on the training set while tuning its hyperparameters/parameters: in other words,the model is found and then tested on the validation set before to be improved once again.

How to handle missing data in a given training data set ?

Count the number of rows in an SQL table

Given a neural network with 4 inputs, how many connections could exist between the input layer and the first hidden layer?

What does NER mean?

Write a SQL query to get the total order amount for each customer.