Job offersCompaniesTestsBlogI'm an employerSign upLog in
fr
fr
Home>IT Tests>Questions

30 interview questionsfor developers (2025)

Test your developer skills before an interview with 30 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

or
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
30
To review
0
30 questions
Easy
12 votes1011 runs0 comment

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

Data Scientist
scikit-learn
threshold
logistic regression
Anonymous authorat Apr 6, 2022
Hard
5 votes963 runs0 comment

How to get the size of an array in scikit-learn

Data Scientist
scikit-learn
numpy
array
Anonymous authorat Apr 6, 2022
Easy
4 votes914 runs0 comment

The choice of the centers of the initial clusters has no impact on the final result of the K-Means algorithm.

Data Scientist
scikit-learn
k-means
Anonymous authorat Apr 6, 2022
Easy
3 votes951 runs
1 comment

Access the value located in the fifth row and the third column of df.

Data Scientist
scikit-learn
dataframe
indexing
Anonymous authorat Apr 6, 2022
Easy
3 votes916 runs1 comment

Reshape a 2x4 array into a 2x2x2 array in scikit-learn

Data Scientist
scikit-learn
numpy
reshape
Anonymous authorat Jan 30, 2023
Easy
2 votes894 runs0 comment

Read the contents of the file.csv file by block (or by packet) of five lines.

Data Scientist
scikit-learn
pandas
read_csv
Anonymous authorat Apr 6, 2022
Medium
2 votes880 runs0 comment

What is the value of the n_support_ attribute of an instance of an SVM algorithm?

Data Scientist
scikit-learn
svm
Anonymous authorat Apr 6, 2022
Medium
2 votes864 runs0 comment

Print the data type of a numpy array

Data Scientist
scikit-learn
numpy
array
Anonymous authorat Apr 6, 2022
Easy
2 votes860 runs0 comment

The Pandas library does not allow grouping of data as we can do with the Group By clause of the SQL language.

Data Scientist
scikit-learn
Anonymous authorat Apr 6, 2022
Easy
2 votes843 runs0 comment

Calculations on a numpy array are faster than on a Python list.

Data Scientist
scikit-learn
numpy
list
Anonymous authorat Apr 6, 2022
Hard
1 vote884 runs0 comment

How to get the size of a numpy array in scikit-learn

Data Scientist
scikit-learn
numpy
array
Anonymous authorat Mar 2, 2023
Easy
1 vote874 runs0 comment

Apply a function on the data of a column of a DataFrame type object from the pandas library.

Data Scientist
scikit-learn
pandas
dataframe
Anonymous authorat Apr 10, 2023
Easy
1 vote870 runs
1 comment

The fit method works the same when applied with an SVM as it does with any other Scikit-learn algorithm.

Data Scientist
scikit-learn
svm
Anonymous authorat Apr 6, 2022
Easy
1 vote811 runs0 comment

What does the melt method of a DataFrame type object from the pandas library achieve?

Data Scientist
scikit-learn
pandas
dataframe
Anonymous authorat Apr 6, 2022
Easy
1 vote592 runs1 comment

Access the values of the two columns ```Col1``` and ```Col2```

Data Scientist
scikit-learn
dataframe
pandas
Liucijaat Feb 6, 2024
Easy
1 vote330 runs1 comment

Create an instance of a logistic regression algorithm in Scikit-learn

Data Scientist
scikit-learn
logistic regression
Anonymous authorat Apr 6, 2022
Medium
1 vote307 runs0 comment

What does the cluster_centers_ attribute of an instance of KMeans mean?

Data Scientist
scikit-learn
kmeans
Anonymous authorat Apr 6, 2022
Easy
1 vote305 runs0 comment

When to use the K-Means algorithm in scikit-learn?

Data Scientist
scikit-learn
clustering
Anonymous authorat Apr 6, 2022
Easy
0 vote987 runs
1 comment

Compare the memory usage of a list and a numpy array in Python

Data Scientist
scikit-learn
numpy
list
Anonymous authorat Apr 6, 2022
Easy
0 vote907 runs
2 comments

How to create an MLP in Scikit-learn

Data Scientist
scikit-learn
classifiers
Anonymous authorat Apr 6, 2022