Verisk Analytics ml engineer Interview Questions and Answers

90 min MCQ +coding test on hackerrank.

Q1. Sort colors DSA question
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Q2. Detect cycle in a linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect cycle in a linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at some point, there is a cycle in the linked list.
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Q1. Was asked about why you want to join the company,my experience etc.
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Q1. How to configure vpn
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To configure a VPN, you need to set up a VPN server, create user accounts, configure client devices, and establish secure connections.
• Set up a VPN server using software like OpenVPN or Windows Server

• Create user accounts with unique credentials for accessing the VPN

• Configure client devices to connect to the VPN server using the provided credentials

• Establish secure connections by encrypting data transmitted over the VPN
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Q2. System slowness how to resolve
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To resolve system slowness, check for hardware issues, optimize software, update drivers, and monitor resource usage.
• Check for hardware issues such as low memory or CPU usage

• Optimize software by removing unnecessary programs or services

• Update drivers for hardware components

• Monitor resource usage to identify bottlenecks
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I got the opportunity through Nextwave. In the coding test I’m supposed to solve few aptitude questions and around 5-6 coding questions. Out of them 2 are of easy level ,2 are medium and 2 are of hard level.
I solved 2 easy, 1 medium and 1 hard problem.

Q1. Self Introduction , Resume based questions related to project and strengths
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Q2. Programming questions like pattern printing, palindrome without using reverse method, GCD
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Q1. Started with reasoning and aptitude questions based on pattern analysis, number system, profit and loss.
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Q2. Programming questions from leetcode 1.Spiral matrix 2.Pascal’s triangle 3.subsequences 4.problem based on DFS
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Q1. Write a program Binary Search?
Ans. 
Binary search is a divide and conquer algorithm that efficiently finds the target value within a sorted array.
• Start by defining the low and high indices of the array.

• Calculate the middle index and compare the target value with the middle element.

• If the target value is less than the middle element, search the left subarray. If greater, search the right subarray.

• Repeat the process until the target value is found or the s
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Q2. What isCICD flow?
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CI/CD flow stands for Continuous Integration/Continuous Deployment flow, which is a software development practice where code changes are automatically built, tested, and deployed.
• CI/CD flow involves automating the process of integrating code changes into a shared repository, running automated tests, and deploying the changes to production.

• Continuous Integration (CI) focuses on automating the build and testing of code c...read more
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Q3. How to handle Enum feature?
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Enums are a feature in programming languages that allow you to define a set of named constants.
• Enums can be used to improve code readability by giving meaningful names to values

• Enums can be used in switch statements to handle different cases

• Enums can have associated values or raw values for more flexibility
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Q4. Singleton handles the Syncronized ?
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Yes, Singleton handles synchronization by ensuring only one instance of a class is created and providing global access to that instance.
• Singleton pattern restricts the instantiation of a class to one object.

• It provides a global point of access to the instance.

• Synchronization can be implemented in the Singleton pattern to ensure thread safety.

• Example: Singleton pattern is commonly used in database connections to ensure
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Q5. What are external Libraries are used in project?
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External libraries are pre-written code that can be imported and used in a project to provide additional functionality.
• External libraries help in reducing development time by providing ready-made solutions for common tasks.

• Examples include React for front-end development, NumPy for scientific computing in Python, and Retrofit for making network calls in Android apps.
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Q1. About position said for
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Q1. Tell me about yourself
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Q1. Lamda experience
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The aptitude round had the topics of train and distance and time , OOPS , Core Java , JavaScript questions , Operating System questions and DBMS questions.

Q1. Had some data structures and algorithm questions and graph , dynamic programming questions
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Q2. Questions in the datastructures
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SQL Query and Foxpro Code

Q1. Working with SQL views
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Q2. Multi User Save
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