PwC Automation Test Engineer Interview Questions and Answers

Program to find character occurances in 'Hello World'

• Create a map to store character occurrences

• Iterate through each character in the string and update the map

• Print the character occurrences from the map

Multithreading is the ability of a CPU to execute multiple threads concurrently, allowing for better performance and resource utilization.

• Multithreading allows multiple threads to run concurrently within the same process.

• Each thread has its own stack and shares the same memory space.

• Multithreading can improve performance by utilizing multiple CPU cores efficiently.

• Examples of multithreading include running multiple tas...read more

TestNG annotations are used to control the flow of test methods and provide additional information about the test.

• Annotations like @Test, @BeforeSuite, @AfterSuite are used to define test methods and setup/teardown methods

• Annotations like @BeforeTest, @AfterTest are used to run setup/teardown methods before/after a test

• Annotations like @BeforeClass, @AfterClass are used to run setup/teardown methods before/after a test...read more

API testing response codes indicate the status of a request and help diagnose issues in communication between client and server.

• 200 OK: The request was successful, and the server returned the requested data.

• 201 Created: The request was successful, and a new resource was created (e.g., a new user).

• 400 Bad Request: The server could not understand the request due to invalid syntax.

• 401 Unauthorized: The request requires us...read more

XPath is a query language for selecting nodes from an XML document, often used in web automation testing.

• XPath syntax uses path expressions to navigate through elements and attributes in an XML document.

• Example: //div[@class='example'] selects all <div> elements with class 'example'.

• Relative XPath starts with a single dot (.) or double dot (..) to navigate from the current node.

• Example: .//span selects all <sp...read more

This program counts the number of duplicate letters in a given word, providing insights into letter frequency.

• Use a dictionary to store letter counts: Iterate through each letter in the word and update its count in the dictionary.

• Identify duplicates: After counting, filter the dictionary to find letters with a count greater than one.

• Example: For the word 'balloon', the duplicates are 'l' and 'o', with counts of 2 each.

• ...read more

Authentication methods in REST involve using tokens or credentials to verify the identity of the user or client.

• Basic Authentication: Uses a username and password encoded in Base64.

• Bearer Token Authentication: Uses a token generated by the server and sent in the Authorization header.

• OAuth 2.0: Allows third-party applications to obtain limited access to a user's resources without exposing their credentials.

• API Keys: Uni...read more

I have worked on multiple projects involving automation testing of web applications using Selenium and API testing using Postman.

• Developed automated test scripts using Selenium WebDriver for regression testing of web applications

• Performed API testing using Postman to validate data exchange between different systems

• Collaborated with developers to identify and resolve bugs in the early stages of development

• Utilized JIRA ...read more