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10+ Growskill IT Interview Questions and Answers

Updated 15 Jul 2024

Q1. Login with multiple credentials which are stored in one excel sheet

Ans.

Multiple credentials can be logged in using data from an excel sheet.

  • Read the excel sheet using a library like Apache POI

  • Iterate through the rows and columns to get the data

  • Use a loop to login with each set of credentials

  • Assert the login success or failure for each set of credentials

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Q2. What is webdriver and webelement

Ans.

WebDriver is a tool for automating web applications. WebElement is an interface representing an HTML element.

  • WebDriver is a browser automation tool used to control the browser and interact with web elements

  • WebElement is an interface representing an HTML element on a web page

  • WebDriver interacts with web elements using the WebElement interface

  • Examples of web elements include buttons, text fields, and links

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Q3. Connect Nodes at Same Level Problem Statement

An assignment is to link adjacent nodes at the same level in a binary tree. Each node in a binary tree has at most two children (left and right) and a next pointer ...read more

Ans.

Connect adjacent nodes at the same level in a binary tree by setting next pointers.

  • Traverse the tree level by level using a queue.

  • For each level, connect nodes using the next pointer.

  • Set the next pointer of the last node in each level to NULL.

  • Use constant space aside from input constraints.

  • Example: Input - 1 2 3 4 -1 5 6 -1 7 -1 -1 -1 -1 -1 -1, Output - 1 # 2 3 # 4 5 6 # 7 #

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Q4. Loop Detection and Removal in Linked List

In a singly linked list, detect if a loop exists and remove the loop if present. Modify the linked list directly to eliminate any loops before returning it.

Input:

The ...read more

Ans.

Detect and remove loop in a singly linked list efficiently.

  • Use Floyd's Cycle Detection Algorithm to detect the loop in the linked list.

  • Once the loop is detected, use two pointers to find the start of the loop.

  • Break the loop by setting the next pointer of the last node in the loop to null.

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Q5. Median of Two Sorted Arrays

Given two sorted arrays A and B of sizes N and M, find the median of the merged array formed by combining arrays A and B. If the total number of elements, N + M, is even, the median ...read more

Ans.

Find the median of two sorted arrays by merging them and calculating the median of the combined array.

  • Merge the two sorted arrays into one sorted array.

  • Calculate the median of the merged array based on the total number of elements.

  • If the total number of elements is even, take the mean of the two middle elements as the median.

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Q6. Extracting Leaf Nodes from a Binary Tree

Given a binary tree, develop a solution to retrieve a list of all the leaf nodes in the order they appear from left to right. If two leaf nodes are equidistant from the ...read more

Ans.

Retrieve leaf nodes from a binary tree in left to right order, prioritizing lesser depth or smaller node data if equidistant from leftmost node.

  • Traverse the binary tree in level order and keep track of leaf nodes.

  • Prioritize leaf nodes with lesser depth or smaller node data if equidistant from leftmost node.

  • Return the list of leaf nodes in the order they appear from left to right.

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Q7. Expected conditions in selenium

Ans.

Expected conditions are pre-defined conditions that can be used to wait for a certain state or element in Selenium.

  • ExpectedConditions.elementToBeClickable() - waits for an element to be clickable

  • ExpectedConditions.visibilityOfElementLocated() - waits for an element to be visible

  • ExpectedConditions.titleContains() - waits for the page title to contain a certain text

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Q8. Wait for file loading

Ans.

To wait for file loading in Selenium Automation, we can use explicit wait or thread.sleep() method.

  • Explicit wait is used to wait for a specific condition to occur before proceeding with the next step.

  • Thread.sleep() method is used to pause the execution for a specified amount of time.

  • We can also use the ExpectedConditions class to wait for a file to be loaded.

  • Waiting for a file to be loaded is important to ensure that the file is available for further processing.

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Q9. What are some key concepts related to virtual memory, and can you discuss any follow-up questions that may arise from them?
Ans.

Key concepts related to virtual memory and potential follow-up questions

  • Key concepts: paging, segmentation, page tables, TLB, page faults, thrashing

  • Follow-up questions: How does virtual memory differ from physical memory? What is the role of the operating system in managing virtual memory? How does virtual memory improve system performance?

  • Example: Explain the concept of page tables and how they are used in virtual memory management

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Q10. Difference between abstract and interface

Ans.

Abstract class is a class that cannot be instantiated and can have both abstract and non-abstract methods. Interface is a blueprint for a class and can only have abstract methods.

  • Abstract class can have constructors while interface cannot

  • A class can implement multiple interfaces but can only inherit from one abstract class

  • Abstract class can have instance variables while interface cannot

  • Abstract class is used for code reusability while interface is used for achieving abstracti...read more

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Q11. Tell me about a data engineering challenge you faced. How did you tackle it and what was the outcome?

Ans.

Migrating data from on-premise servers to cloud storage

  • Identified data sources and destination in cloud storage

  • Developed ETL pipelines to extract, transform, and load data

  • Ensured data integrity and security during migration process

  • Monitored and optimized performance of data transfer

  • Collaborated with cross-functional teams for successful migration

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Q12. Create a program who prints last 10 lines from a file and that program will trigeer itself in every one minute

Ans.

Create a program to print last 10 lines from a file and trigger itself every minute.

  • Read the file and store the last 10 lines in a data structure like a queue or array

  • Use a timer to trigger the program every minute

  • Print the last 10 lines from the data structure

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Q13. What is a peer-to-peer connection?
Ans.

A peer-to-peer connection is a network connection between two or more devices without the need for a central server.

  • Allows devices to communicate directly with each other

  • Each device can act as both a client and a server

  • Commonly used in file sharing applications like BitTorrent

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Q14. Why alphasense?

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Q15. Design Search engine

Ans.

Design a search engine

  • Define the scope and purpose of the search engine

  • Determine the data sources and indexing strategy

  • Implement a ranking algorithm to prioritize search results

  • Design a user-friendly interface for search queries

  • Consider scalability and performance optimizations

  • Implement features like autocomplete and spell correction

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