Skeps Sdet Automation Test Engineer Interview Questions, Process, and Tips

1. Prepare java string questions

Q1. Java code, Selenium, Autoamtion testing
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Have to write code snippet for serialization and deserialization in java

Q1. Code to explain Indian number plate system
Ans. 
Indian number plate system consists of a unique combination of letters and numbers to identify vehicles.
• Indian number plates consist of a combination of letters and numbers

• The first two letters indicate the state where the vehicle is registered

• Followed by a unique number assigned to the vehicle

• Some number plates may also include additional information like the vehicle class or fuel type
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Q2. To check if a string is palindrome with recusrion
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Check if a string is palindrome using recursion
• Create a recursive function that compares the first and last characters of the string

• If they match, call the function with the substring excluding the first and last characters

• Continue this process until the string length is 0 or 1, then return true if all characters matched

• Example: 'racecar' is a palindrome, 'hello' is not
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Q3. Oops concepts in java
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Oops concepts in Java refer to Object-Oriented Programming principles like Inheritance, Polymorphism, Encapsulation, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability of an object to take on many forms.

• Encapsulation: Bundling of data with the methods that operate on that data.

• Abstraction: Hiding the implementation details and showing only the necessa
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Q1. Separate 1's and 0's in an array with minimal complexity
Ans. 
Use two pointers approach to separate 1's and 0's in an array of strings with minimal complexity.
• Initialize two pointers, one at the beginning and one at the end of the array.

• Move the left pointer until it encounters a '0' and the right pointer until it encounters a '1'.

• Swap the elements at the left and right pointers, then move the pointers towards each other until they meet in the middle.
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Q2. How to automate filters in web page
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Automating filters in a web page involves identifying filter elements, selecting filter criteria, and verifying filtered results.
• Identify filter elements on the web page such as dropdowns, checkboxes, or input fields

• Use automation tools like Selenium to interact with filter elements and select desired criteria

• Trigger filter action (e.g. clicking 'Apply' button) and wait for the page to refresh with filtered results

• Veri...read more
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Q1. Design URL shorterner
Ans. 
Design a URL shortener service to generate short URLs for long URLs.
• Use a hashing algorithm to generate unique short codes for long URLs.

• Store the mapping of short codes to long URLs in a database.

• Redirect users from short URLs to the corresponding long URLs.

• Implement analytics to track usage and performance of the service.
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3 hour test. 20 MCQs and 2 Coding problems

Q1. Prefix Sum and left sum of binary tree.
Ans. 
Prefix Sum and left sum of binary tree involves calculating the sum of all nodes in a binary tree and the sum of nodes on the left side of each node.
• Calculate prefix sum of binary tree by traversing in a pre-order manner and keeping track of the running sum.

• To calculate left sum of binary tree, traverse the tree in a pre-order manner and keep track of the sum of nodes on the left side of each node.

• Example: For a binary...read more
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Q1. Recursion to memoization DP problem and follow ups.
Ans. 
Recursion to memoization DP problem involves optimizing recursive solutions by storing intermediate results.
• Recursion involves solving a problem by breaking it down into smaller subproblems and calling the function recursively.

• Memoization involves storing the results of expensive function calls and reusing them when the same inputs occur again.

• Dynamic Programming (DP) involves solving problems by breaking them down int...read more
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Q1. Java programs, concepts of java selenium
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Q2. Oops concepts of java
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Oops concepts of Java
• Encapsulation: Bundling data and methods together in a class

• Inheritance: Acquiring properties and behaviors from a parent class

• Polymorphism: Ability to take on many forms

• Abstraction: Hiding complex implementation details

• Interface: Blueprint of a class that defines methods to be implemented
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Q3. Constructor concept
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Q4. Java logical program
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Q5. Selenium webdriver questions
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Q1. Bug life cycle and agile proces.
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Q2. Implicit and Explicit wait, key difference and the syntax.
Ans. 
Implicit and Explicit wait are used in Selenium for handling synchronization issues in test automation.
• Implicit wait is set globally for the entire test script, while explicit wait is applied only to specific elements.

• Implicit wait waits for a specified amount of time before throwing a NoSuchElementException, while explicit wait waits for a specific condition to be met before proceeding.

• Syntax for implicit wait: driver...read more
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Q3. Xpath writing with parent child relation
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Xpath writing with parent child relation involves specifying the path to locate elements based on their hierarchical relationship.
• Use '/' to specify direct child elements

• Use '//' to specify any descendant elements

• Use '[]' to specify conditions for selecting elements

• Example: //div[@class='parent']/child::span
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Q4. Java constructor oops concepts and code for swapping two numbers
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Java constructor is a special type of method used to initialize objects. Swapping two numbers can be done using a temporary variable.
• Java constructor is used to initialize objects in a class.

• Swapping two numbers can be done by using a temporary variable.

• Example code for swapping two numbers using constructor:

• public class NumberSwapper {

• int num1;

• int num2;

• public NumberSwapper(int a, int b) {

• num1 = a;

• num2 = ...read more
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Amazon website needs to validate drop-down value

It was very good 60 questions

3 coding question everhthing was hard

Q1. What is java and cpp and dbms sql etc
Ans. 
Java is a popular programming language, C++ is another programming language, and DBMS SQL is a language used for managing databases.
• Java is an object-oriented programming language commonly used for building web applications and software.

• C++ is a high-level programming language often used for system programming and game development.

• DBMS SQL is a language used to interact with relational databases, allowing users to retr...read more
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Q2. What is python, oops and inheritance
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Python is a high-level programming language known for its simplicity and readability. OOPs (Object-Oriented Programming) is a programming paradigm that uses objects and classes. Inheritance is a feature of OOPs that allows a class to inherit properties and behavior from another class.
• Python is a versatile, interpreted language used for web development, data analysis, artificial intelligence, and more.

• OOPs focuses on cr...read more
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