Qa Qc Engineer Interview Questions

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You are outside a room. Inside the room there are two light bulbs. One light bulb is on all the time, the other light bulb only turns on when you open the door. How do you determine which light bulb is on all the time?
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QA Engineer

Interviewed at Palantir Technologies

3.7
Mar 1, 2011

You are outside a room. Inside the room there are two light bulbs. One light bulb is on all the time, the other light bulb only turns on when you open the door. How do you determine which light bulb is on all the time?

1. Test Case Enumeration: Write test cases for taxi booking application for Ola or Uber. You are expected to write testcases covering different types of functional and non-functional testing areas 2. Problem Solving: Find the first occurance of a given number from the series which has the difference between the adjacent elements as 1. For Example {1, 0, -1,-2,-1,0,1,2,3} Note: Do not use Linear Search 3. Test Data Generation Write the test data for the function: int getSmallestIntegerPosition(int[] A) This method accepts as input integer array that is already sorted and rotated "n" number of items where n is less than the size of the array For Example: The test data can be {4,5,6,1} This was derived from {1, 4, 5,6} afer sorting and rotating the array for 3 times And output of the function returns the index of integer that has the smallest value Eg: {4,5,6,1}: the smallest value is 1 and its index is 3 Note: This method searches for the element and derives the position with an order of O(log(n)) 4. Debugging While using skype or google hangout application, you are not able to do a video chat, describe how you debug the problem considering different aspects of functional and non-functional testing 5. Scripting Find the nth consecutive occurence of a character in a given string. For example for the given input string of "Amazon is a great company as it haas AtoooZzz" and the output should be "o" 6. Consider a string "Hello Good Morning" it should print the sentence in reverse order output should be "Morning Good Hello" 7. Check two strings are anagram 8. Merge two dimesional Array Consider array1 ={{10, 15}, {30, 50}} array2 ={{20,40}, {5, 10}} Merged array should be sandwitched (array 1 should be sandwitched with array 2) also while merging array if value range is less than the previously added value then that value should not be added to the merged array Output should be {10, 20, 30, 40, 50} --> 15, 5 and 10 should not be added 9. Print middle character of a string. If middle value has even then print 2 characters Eg: Amazon -->print az 10. Search an element in array without using linear search technique 11. Write test cases for Amazon Prime functionality 12. Testcases enumeration and data preperation for Whatsapp messenger
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Quality Assurance Engineer II

Interviewed at Amazon

3.5
Jul 26, 2017

1. Test Case Enumeration: Write test cases for taxi booking application for Ola or Uber. You are expected to write testcases covering different types of functional and non-functional testing areas 2. Problem Solving: Find the first occurance of a given number from the series which has the difference between the adjacent elements as 1. For Example {1, 0, -1,-2,-1,0,1,2,3} Note: Do not use Linear Search 3. Test Data Generation Write the test data for the function: int getSmallestIntegerPosition(int[] A) This method accepts as input integer array that is already sorted and rotated "n" number of items where n is less than the size of the array For Example: The test data can be {4,5,6,1} This was derived from {1, 4, 5,6} afer sorting and rotating the array for 3 times And output of the function returns the index of integer that has the smallest value Eg: {4,5,6,1}: the smallest value is 1 and its index is 3 Note: This method searches for the element and derives the position with an order of O(log(n)) 4. Debugging While using skype or google hangout application, you are not able to do a video chat, describe how you debug the problem considering different aspects of functional and non-functional testing 5. Scripting Find the nth consecutive occurence of a character in a given string. For example for the given input string of "Amazon is a great company as it haas AtoooZzz" and the output should be "o" 6. Consider a string "Hello Good Morning" it should print the sentence in reverse order output should be "Morning Good Hello" 7. Check two strings are anagram 8. Merge two dimesional Array Consider array1 ={{10, 15}, {30, 50}} array2 ={{20,40}, {5, 10}} Merged array should be sandwitched (array 1 should be sandwitched with array 2) also while merging array if value range is less than the previously added value then that value should not be added to the merged array Output should be {10, 20, 30, 40, 50} --> 15, 5 and 10 should not be added 9. Print middle character of a string. If middle value has even then print 2 characters Eg: Amazon -->print az 10. Search an element in array without using linear search technique 11. Write test cases for Amazon Prime functionality 12. Testcases enumeration and data preperation for Whatsapp messenger

You have 9 marbles which are all the same weight, except for one which is slightly heavier than the others. You also have an old?style balance, which allows you to weigh two piles of marbles to see which one is heavier (or if they are of equal weight). What is the fewest number of weighings that you can make which will tell you which marble is the heavier one ?
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Quality Assurance Engineer

Interviewed at AppLogic Networks

3.7
Sep 26, 2012

You have 9 marbles which are all the same weight, except for one which is slightly heavier than the others. You also have an old?style balance, which allows you to weigh two piles of marbles to see which one is heavier (or if they are of equal weight). What is the fewest number of weighings that you can make which will tell you which marble is the heavier one ?

80% was behavioral and the 3 coding questions were not difficult (tachometer, pair of integers adding to a sum and another string problem to remove numbers from a mix of numbers and characters). Ability to tell your stories is really important. Interviewers keep taking notes while you answer.
avatar

Quality Assurance Engineer

Interviewed at Amazon

3.5
Jul 5, 2017

80% was behavioral and the 3 coding questions were not difficult (tachometer, pair of integers adding to a sum and another string problem to remove numbers from a mix of numbers and characters). Ability to tell your stories is really important. Interviewers keep taking notes while you answer.

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