10+ TCS QA Engineer Interview Questions and Answers

As an Automation Tester, my day to day activities include writing and executing automated test scripts, analyzing test results, identifying bugs, and collaborating with developers to resolve issues.

• Writing and executing automated test scripts using tools like Selenium or Appium

• Analyzing test results and identifying bugs in the software

• Collaborating with developers to resolve issues and improve the quality of the software

• Participating in daily stand-up meetings to discuss prog...read more

To find a list of elements in Selenium, you can use various methods like findElements() and XPath.

• Use findElements() method to locate multiple elements based on a locator strategy

• Use XPath to find elements based on their attributes or hierarchy

• Store the list of elements in a List variable for further manipulation

Hande is not a word in English. Handles are used to grip or manipulate objects.

• Hande is not a word in English, it may be a misspelling of handle.

• Handles are used to grip or manipulate objects, such as a door handle or a tool handle.

XPath is a language used to navigate and select elements in an XML or HTML document.

• XPath stands for XML Path Language

• It uses path expressions to select nodes or sets of nodes in an XML or HTML document

• XPath expressions can be used in various programming languages such as Java, Python, and Ruby

• To find XPath, you can use browser developer tools or tools like Firebug and Chrome DevTools

Methods that can be inherited by a child class include public and protected methods from the parent class.

• Public methods in the parent class can be inherited by the child class.

• Protected methods in the parent class can also be inherited by the child class.

• Private methods in the parent class cannot be inherited by the child class.

Functional testing is a type of software testing where the system is tested against the functional requirements/specifications.

• Tests the functionality of the software application

• Focuses on what the system does

• Verifies that the system behaves as expected based on the requirements

• Does not concern with how the system works internally

• Examples: testing login functionality, search feature, data validation

Software testing is the process of evaluating a software application or system to find defects and ensure it meets the specified requirements.

• Testing is done to identify defects or bugs in the software

• It ensures that the software meets the specified requirements

• Testing can be done manually or using automated tools

• Types of testing include functional, performance, security, and usability testing

• Testing is an iterative process that continues throughout the software development l...read more

Sending keys using JSE in QA testing

• Use the sendKeys() method to send keyboard input to a web element

• Locate the element using findElement() method before sending keys

• Example: driver.findElement(By.id("username")).sendKeys("example@gmail.com")

RCA document stands for Root Cause Analysis document, which is used to identify the underlying cause of a problem or issue.

• RCA document is a detailed report that outlines the steps taken to investigate and determine the root cause of a problem.

• It includes information on the problem, the impact it had, the investigation process, findings, and recommendations for preventing similar issues in the future.

• RCA documents are commonly used in quality assurance and problem-solving pro...read more

Remove duplicates from array of strings and count occurrences of each string

• Iterate through array and use a Set to remove duplicates

• Use a HashMap to count occurrences of each string

• Return the unique strings and their counts

Locators can be found using browser developer tools, inspecting elements, using unique attributes, and writing efficient XPath or CSS selectors.

• Use browser developer tools to inspect elements on the webpage

• Look for unique attributes like IDs, classes, or data attributes

• Write efficient XPath or CSS selectors to locate elements

• Consider using relative locators for dynamic elements

Security testing is the process of identifying vulnerabilities and weaknesses in a system to ensure it is secure from potential threats.

• It involves testing the system for potential security breaches and vulnerabilities

• It includes testing for authentication and authorization mechanisms

• It also involves testing for data encryption and decryption

• Examples include penetration testing, vulnerability scanning, and risk assessment

• The goal is to ensure the system is secure from potenti...read more

An abstract method is a method that is declared without an implementation in the class, and must be implemented by subclasses.

• Abstract methods are declared using the 'abstract' keyword.

• Classes containing abstract methods must also be declared as abstract classes.

• Subclasses of abstract classes must provide implementations for all abstract methods.

• Abstract classes cannot be instantiated, only subclasses can be instantiated.

• Abstract methods are useful for defining a common inter...read more

Manual testing is the process of manually testing software for defects without the use of automation tools.

• Involves testers executing test cases manually

• Requires human intervention to observe and verify the results

• Time-consuming but necessary for certain scenarios

• Examples: exploratory testing, ad-hoc testing

Circular linked list is a data structure where the last node points back to the first node, forming a circle.

• Each node in a circular linked list contains a data element and a pointer to the next node.

• Traversal in a circular linked list starts at any node and continues until the starting node is reached again.

• Circular linked lists are used in applications where elements need to be accessed in a circular manner, such as round-robin scheduling.

Sorting an array of strings using Java

• Use Arrays.sort() method to sort the array of strings

• You can also use a custom Comparator to define the sorting order

• Example: String[] arr = {"apple", "banana", "cherry"}; Arrays.sort(arr);

API testing is a type of software testing that involves testing APIs directly to ensure they meet functionality, reliability, performance, and security requirements.

• API testing involves testing the functionality, reliability, performance, and security of APIs

• It focuses on verifying the communication between different software systems

• API testing can be done using tools like Postman, SoapUI, or custom scripts

• Examples of API testing include testing RESTful APIs, SOAP APIs, and w...read more

Remove duplicate strings from an array

• Iterate through the array and store each string in a set to keep track of duplicates

• Create a new array with unique strings by checking if the set already contains the string

• Return the new array without duplicates