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Z X Learning Data Science Trainer Interview Questions and Answers
Z X Learning Data Science Trainer Interview Experiences
1 interview found
I applied via LinkedIn and was interviewed in May 2022. There were 2 interview rounds.
(2 Questions)
- Q1. White noise in time series
- Ans.
White noise is a random signal with equal intensity at all frequencies.
White noise is a type of stationary stochastic process.
It has a constant power spectral density.
It is often used as a reference signal for analyzing other signals.
Examples include the sound of static on a TV or radio, or the sound of waves crashing on a beach.
White noise can be generated using a random number generator.
- Q2. Do you know SVM ? Explain
- Ans.
SVM stands for Support Vector Machine, a supervised learning algorithm used for classification and regression analysis.
SVM finds the best possible boundary between two classes of data points
It works by mapping data points to a high-dimensional feature space and finding the hyperplane that separates the classes
SVM can handle both linear and non-linear data
It is widely used in image classification, text classification, a
Interview Preparation Tips
- Data science interview
Skills evaluated in this interview
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Anonymous
I applied via Job lever and was interviewed before Sep 2021. There were 2 interview rounds.
Easy leetcode code 2 questions , HTML5 css javascript simple screen design
(1 Question)
- Q1. Oop, Simple coding javascript, react basic, sql basic
Interview Preparation Tips
Interview Questionnaire
1 Question
- Q1. Any type of questions in data field
I applied via Naukri.com and was interviewed before Sep 2021. There were 2 interview rounds.
Question was moderate.based on logical reasoning and math.
Coding test question based on sql and python.
Interview Preparation Tips
I applied via Company Website and was interviewed before Nov 2022. There were 4 interview rounds.
3 questions in 3 hr, topics were Dp, Strings, Tree
1hr durations 40 questions, main topics were patterns, profit loss, work man , etc.
(1 Question)
- Q1. OOPS, JAVA, Mysql, general questsjons
Interview Preparation Tips
- java
- Android
- DSA
- OOPS
Selected
I applied via Naukri.com and was interviewed in Mar 2023. There were 2 interview rounds.
Write the program to swipe number
(2 Questions)
- Q1. How much salary do you want and what was you last ctc
- Q2. Tell me about your family
Interview Preparation Tips
(1 Question)
- Q1. Tell me something about your family members?
(1 Question)
- Q1. What was your salary expectation?
I was interviewed before Sep 2020.
(1 Question)
Round duration - 120 minutes
Round difficulty - Easy
It was a mix of mathematical aptitude, logical ability, and puzzles along with 2 programming questions of easy and medium level. Time was enough and no sectional time was present. 1-2 MCQs on SQL were also present.
This round was immediately followed by an SHL aptitude test which was basically a quick limited time check of your verbal ability and math because many questions were to be done in 1 hour.
- Q1.
Boolean Matrix Transformation Challenge
Given a 2-dimensional boolean matrix
matof size N x M, your task is to modify the matrix such that if any element is 1, set its entire row and column to 1. Specifi... - Ans.
Modify a boolean matrix such that if any element is 1, set its entire row and column to 1.
Iterate through the matrix and mark rows and columns to be modified
Use additional arrays to keep track of rows and columns to be modified
Update the matrix in-place based on the marked rows and columns
Round duration - 60 minutes
Round difficulty - Easy
It was an online video interview round on HackerEarth with simultaneous code option. It was mostly justifying your resume in the first 15 minutes. After that OOPS was majorly asked. Basics of programming including questions on STL were asked. A class which required inheritance was asked by the interviewer to write. I was helped by the interviewer if i got stuck somewhere, Some questions on implementation of hashmaps and priority queues were also asked. A puzzle was asked which luckily struct to me at that moment.
Interview Preparation Tips
Tip 1 : Never give up
Tip 2 : When u start a topic, don't move on to next topic before you are 100% confident in previous topic
Tip 3 : Try to give maximum time on basics of a topic especially OOPS
Tip 4 - Practice Atleast 250 Questions
Tip 5 - Ex- Do atleast 2 projects
Tip 1 : Write only those things in resume in which you are 100% confident
Tip 2 : Write maximum projects you have and be ready to explain them thoroughly
Tip 3 : Don't make any silly spelling mistakes on resume
Skills evaluated in this interview
Selected
I applied via Approached by Company and was interviewed before Jun 2022. There were 3 interview rounds.
Coding round with 3 problem statements
(5 Questions)
- Q1. Questions related to project you have mentioned on resume
- Q2. Questions related to technologies you have mentioned
- Q3. Questions related to the coding test
- Q4. Nothing discussed everything as I know
- Q5. All the best those who are trying their best
Selected
Common Aptitude along with HTML5, CSS
(1 Question)
- Q1. Mostly questions were on HTML5,CSS and web development related questions.
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