Cognizant Test Engineer Interview Questions and Answers

Java is a high-level, object-oriented programming language designed for portability and ease of use across platforms.

• Developed by Sun Microsystems in 1995, now owned by Oracle.

• Java is platform-independent due to the Java Virtual Machine (JVM).

• It follows the principle of 'Write Once, Run Anywhere' (WORA).

• Java is widely used for building enterprise-level applications, mobile apps, and web applications.

• Example: Andro...read more

Program to reverse a string using array of characters

• Create an array of characters to store the input string

• Iterate through the input string and store each character in the array

• Iterate through the array in reverse order to construct the reversed string

To switch to a frame in test automation, use the switchTo() method in Selenium WebDriver.

• Use driver.switchTo().frame() method to switch to a frame by index, name, or WebElement.

• To switch back to the default content, use driver.switchTo().defaultContent().

• Make sure the frame is present and loaded before switching to it.

This Java program reverses the words in a given string while maintaining their order.

• Use the split() method to break the string into words. Example: String[] words = input.split(" ");

• Utilize a StringBuilder to construct the reversed words. Example: StringBuilder reversed = new StringBuilder();

• Iterate through the array of words in reverse order. Example: for (int i = words.length - 1; i >= 0; i--) { ... }

• Append ...read more

I worked on a data-driven automation framework using Selenium and TestNG.

• Used Selenium WebDriver for browser automation

• Utilized TestNG for test case management and execution

• Implemented data-driven testing using Excel or CSV files

• Integrated with Jenkins for continuous integration

• Supported parallel execution for faster testing

• Handled reporting using ExtentReports or Allure

Black box testing is testing without knowledge of the internal workings of the system, while white box testing is testing with knowledge of the internal workings of the system.

• Black box testing focuses on testing the functionality of the system without knowledge of the internal workings of the system.

• White box testing focuses on testing the internal workings of the system, including code and algorithms.

• Black box t...read more

SDLC stands for Software Development Life Cycle, a process used to design, develop, and test software. Agile is a methodology that emphasizes flexibility and collaboration.

• SDLC is a structured process that includes phases like planning, design, development, testing, deployment, and maintenance.

• Agile is a methodology that focuses on iterative development, collaboration, and customer feedback.

• SDLC is more traditiona...read more

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 and ensure the software meets the requirements

• It involves various types of testing such as functional, performance, security, etc.

• Testing can be done manually or using automated tools

• Test cases are designed to cover all possible scenarios ...read more