FIS Sdet Interview Questions and Answers

Q1. Explain framework used for selenium
Ans. 
Selenium is an open-source automation testing framework used for web applications.
• Selenium supports multiple programming languages like Java, Python, C#, etc.

• It consists of Selenium WebDriver, Selenium IDE, and Selenium Grid.

• Selenium WebDriver is used for automating web applications by interacting with the web elements.

• Selenium IDE is a record and playback tool for creating test cases.

• Selenium Grid is used for parallel...read more
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Q2. Checked and unchecked exceptions.
Ans. 
Checked exceptions are checked at compile time, while unchecked exceptions are not.
• Checked exceptions must be either caught or declared in the method signature using 'throws' keyword.

• Unchecked exceptions do not need to be explicitly handled.

• Examples of checked exceptions include IOException, ClassNotFoundException.

• Examples of unchecked exceptions include NullPointerException, ArrayIndexOutOfBoundsException.
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Q3. Exceptions in selenium
Ans. 
Exceptions in Selenium are errors that occur during test execution, such as ElementNotVisibleException or TimeoutException.
• Selenium WebDriver throws exceptions when it encounters errors during test execution.

• Common exceptions include NoSuchElementException, ElementNotVisibleException, TimeoutException, StaleElementReferenceException, and WebDriverException.

• Handling exceptions in Selenium can be done using try-catch blo...read more
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Q4. Waits in selenium
Ans. 
Waits in Selenium are used to synchronize tests with the browser's state.
• Waits help to handle synchronization issues in Selenium tests

• There are two types of waits in Selenium - Implicit Wait and Explicit Wait

• Implicit Wait sets a default waiting time for the entire test script

• Explicit Wait allows the test to wait for a certain condition to be met before proceeding
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Q5. Frames handling
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Q1. Function declaration reverse word in a string copy array without direct assignment equality operator vs strict equal post vs put success code of patch what is 403 status code
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Q1. Questions on Spring Boot, Microservices and Java
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Q1. Tell me about your previous job
Ans. 
I worked as a software developer at a tech company, focusing on test automation and quality assurance.
• Developed automated test scripts using Selenium for web applications

• Collaborated with developers to identify and fix bugs in the code

• Participated in daily stand-up meetings to discuss project progress

• Conducted regression testing to ensure software quality

• Utilized Jira for tracking and managing testing tasks
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Q2. What is expected ctc
Ans. 
Expected CTC is the anticipated salary package for the position.
• Research industry standards for SDET roles

• Consider your experience, skills, and location when negotiating CTC

• Be prepared to discuss salary expectations during the interview process
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Q3. Tell me tools on which you worked on?
Ans. 
I have worked on tools such as Selenium, JUnit, TestNG, Postman, and Jenkins.
• Selenium

• JUnit

• TestNG

• Postman

• Jenkins
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Q4. How many year of experience do you have in total
Ans. 
I have 5 years of experience in total.
• 5 years of experience in software development and testing

• 2 years as a QA engineer and 3 years as an SDET

• Experience with automation testing tools like Selenium and JUnit
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Q1. Reverse String without using loop
Ans. 
Reverse string without using loop
• Use recursion to reverse the string

• Base case: if string length is 0 or 1, return the string

• Recursive case: return the last character + reverse(rest of the string)
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Q2. Parenthesis Balancing using stack
Ans. 
Implement a parenthesis balancing algorithm using a stack
• Use a stack to keep track of opening parentheses

• When encountering a closing parenthesis, pop from stack and check if it matches the closing parenthesis

• If stack is empty or mismatched parentheses, return false

• If all parentheses are balanced, return true
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Round duration - 60 Minutes
Round difficulty - Medium

Timing was in the morning around 10 am. This round was conducted on Hackerrank and contained 2 coding questions of easy to medium level which varied for all the students taking the test. There were 20 MCQs from topics like Java, Operating Systems, Data structures, and SQL.
I also gave a test for this company last year during internships. At that time MCQs were based on aptitude and reasoning. Also at that time, there were 2 coding questions and timing was dividing according to sections.

Q1. 
Nth Element Of Modified Fibonacci Series
Given two integers X and Y as the first two numbers of a series, and an integer N, determine the Nth element of the series following the Fibonacci rule: f(x) = f(x...read more
Ans. 
Calculate the Nth element of a modified Fibonacci series given the first two numbers and N, with the result modulo 10^9 + 7.
• Implement a function to calculate the Nth element of the series using the Fibonacci rule f(x) = f(x - 1) + f(x - 2)

• Return the answer modulo 10^9 + 7 due to the possibility of a very large result

• The series starts with the first two numbers X and Y, and the position N in the series
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Q2. 
Consonant Counting Problem Statement
Given a string STR comprising uppercase and lowercase characters and spaces, your task is to count the number of consonants in the string.
A consonant is defined as a...read more
Ans. 
Count the number of consonants in a given string containing uppercase and lowercase characters and spaces.
• Iterate through each character in the string and check if it is a consonant (not a vowel).

• Keep a count of the consonants encountered while iterating through the string.

• Return the total count of consonants at the end.
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Round duration - 45 Minutes
Round difficulty - Medium

This round was conducted on Cisco WebEx and the interviewer was very friendly. Firstly, we were asked briefly to introduce ourselves. Then he moved on to the CV and asked various questions about the projects, certifications, and internships mentioned. He asked about the implementation of a few features in some of the projects and also about the challenges I faced while doing the project and how I finally overcome the challenge. He also asked about various skills mentioned in the resume.

Q1. 
Merge Two Sorted Linked Lists Problem Statement
You are provided with two sorted linked lists. Your task is to merge them into a single sorted linked list and return the head of the combined linked list.
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Ans. 
Merge two sorted linked lists into a single sorted linked list with constant space complexity and linear time complexity.
• Create a dummy node to start the merged list

• Compare the values of the two linked lists and append the smaller value to the merged list

• Move the pointer of the merged list and the pointer of the smaller value's linked list

• Continue this process until one of the linked lists is fully traversed

• Append the ...read more
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Round duration - 30 Minutes
Round difficulty - Easy

This round started with my Introduction. Then he moved on to behavioral questions just to get an understanding of how we deal with situations and our thinking process.