Cognizant Software Tester Interview Questions and Answers

An array is a fixed-size data structure that stores elements of the same type, while a linked list is a dynamic data structure that stores elements with pointers to the next element.

• Arrays have a fixed size, while linked lists can grow or shrink dynamically.

• Accessing elements in an array is faster than in a linked list.

• Insertion and deletion operations are faster in a linked list compared to an array.

• Arrays use contiguous memory, while linked lists use non-contiguous memory.

• A...read more

Handling alert pop up in Selenium

• Use Alert interface to handle alert pop up

• Switch to alert using driver.switchTo().alert()

• Accept or dismiss alert using accept() or dismiss() method

• Get text from alert using getText() method

• Send keys to alert using sendKeys() method

Jasmin is a testing framework and Selenium is a tool for automating web browsers. They can be integrated to test web applications.

• Jasmin is a behavior-driven development (BDD) testing framework that uses natural language to describe test scenarios.

• Selenium is a tool for automating web browsers and can be used to simulate user interactions with a web application.

• Jasmin and Selenium can be integrated to test web applications by writing test scenarios in Jasmin and using Seleniu...read more

Synchronization is the process of coordinating multiple threads to ensure they access shared resources in a controlled manner.

• Synchronization prevents race conditions and deadlocks.

• It can be achieved using locks, semaphores, and monitors.

• Examples include synchronized methods in Java and mutexes in C++.

• Synchronization can impact performance and should be used judiciously.

Threading is a way of executing multiple tasks simultaneously while locking is a mechanism to prevent data inconsistency.

• Threading allows multiple threads to run concurrently in a single process

• Locking is used to prevent multiple threads from accessing shared resources simultaneously

• Locking can be implemented using mutex, semaphore, or monitor

• Deadlocks can occur if locking is not implemented properly

A pointer is a variable that stores the memory address of another variable.

• Pointers are used to manipulate data directly in memory.

• They are commonly used in programming languages like C and C++.

• Pointers can be used to pass data between functions efficiently.

• They can also be used to dynamically allocate memory.

• Example: int *ptr; // declares a pointer to an integer variable

Smoke testing is a preliminary testing to check if the basic functionalities of a software application are working fine.

• Performed at the beginning of testing phase

• Focuses on basic functionality

• Not detailed testing

• Helps in identifying major issues early on

• Usually automated for efficiency