Deutsche Telekom Sdet Interview Questions and Answers

Java, selenium, appium, accessibility

Q1. Question Related to Automation testing, Please go through Job Description. Question from these topic only. No Coding question.
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Q1. Question realted to Jo desciption and one coding question. coding question from string topic
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Q1. Manager Round, will have question realted to daily job, including debugging skill and situation based.
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Q1. Amazon: Add Cart feature - Write Selenium code
Ans. 
Use Selenium to automate adding items to cart on Amazon website.
• Locate the 'Add to Cart' button on the product page using Selenium's findElement method

• Click on the 'Add to Cart' button to add the item to the cart

• Verify that the item has been successfully added to the cart by checking the cart contents
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Q2. Test cases of Login API
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Test cases for Login API
• Verify valid username and password login successfully

• Verify invalid username and password combination fails to login

• Verify login with empty username or password fails

• Verify login with special characters in username or password fails
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Q3. Write a program to count the character in a string
Ans. 
A program to count the characters in a string
• Iterate through each character in the string and increment the count for each character

• Use a hashmap to store the count of each character

• Handle edge cases like empty string or null input
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Q4. UI test cases of Upload document
Ans. 
UI test cases for uploading a document
• Verify that the 'Upload' button is functional

• Check if the correct file types are allowed for upload

• Ensure that the progress bar is displayed during upload

• Confirm that the document is successfully uploaded and visible on the UI
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Q5. UI test cases of a Form
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UI test cases for a Form
• Verify all required fields are displayed

• Test validation messages for invalid inputs

• Check if form submission is successful

• Test the functionality of reset button
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Q6. How to achieve parallel execution of test cases in testNG?
Ans. 
Parallel execution of test cases in TestNG can be achieved using TestNG's parallel attribute in the testng.xml file.
• Set the 'parallel' attribute in the testng.xml file to 'methods', 'classes', or 'tests' to specify the level of parallelism.

• Use the 'thread-count' attribute to specify the number of threads to be used for parallel execution.

• Ensure that the test classes are thread-safe to avoid any conflicts during paralle
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Q7. Write a program to reverse the words in a string I/P: My name is abc O/P: abc is name My
Ans. 
Program to reverse words in a string
• Split the input string into an array of words

• Reverse the array of words

• Join the reversed array back into a string
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Q1. Write a program to reverse the string. I/P: I LOVE JAVA O/P: A VAJE VOLI
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Q2. Regression vs Sanity
Ans. 
Regression testing ensures existing functionality still works after changes, while sanity testing checks if new functionality works as expected.
• Regression testing is performed to make sure that new code changes do not adversely affect existing functionality.

• Sanity testing is a cursory testing to make sure that the new functionality is working as expected.

• Regression testing is usually automated and covers a wide range o...read more
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Q3. Explain automation framework
Ans. 
Automation framework is a set of guidelines, tools, and processes used to automate testing of software applications.
• Automation framework provides structure and guidelines for creating and executing automated tests.

• It helps in organizing test scripts, managing test data, and generating test reports.

• Examples of automation frameworks include Selenium, TestNG, and Cucumber.

• Frameworks can be data-driven, keyword-driven, or
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Q4. What are the reasons for 500 - Internal Server Error
Ans. 
500 Internal Server Error is a generic error message indicating a problem with the server.
• Server misconfiguration

• Server overload

• Programming errors in server-side code

• Database connection issues

• Insufficient server resources
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Q5. Submit button -> Click -> Blank page Identify the debug and find the root cause
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Q6. Write test cases of an API that creates User's profile by accepting First name, Last name and mobile number
Ans. 
Test cases for API creating User's profile with First name, Last name, and mobile number
• Verify that a user profile is created successfully with valid First name, Last name, and mobile number

• Test with invalid First name (empty, special characters, numbers)

• Test with invalid Last name (empty, special characters, numbers)

• Test with invalid mobile number (empty, alphabets, special characters, less than 10 digits)

• Verify that ...read more
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Q1. Project related questions only and basic question
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Q1. Ctc discussion, expected ctc and doj
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Q1. Basic question on corenjava
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Q2. Basic question on selenium
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Q1. Palindrome with dynamic programming
Ans. 
Using dynamic programming to check if a string is a palindrome.
• Create a 2D array to store the results of subproblems

• Iterate through the string and fill the array based on whether substrings are palindromes

• Check the array to determine if the entire string is a palindrome
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Q1. Oops concepts, Selenium, core java
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Q1. About yourself , what is different types of wait in selenium, how to read the data from excel.
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