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Microsoft
Software Engineer in Test(SDET) Interview Questions
Chris Sells
writes about the set of tester questions
his friend got when being interviewed for Software
Development Engineer in Test position at Microsoft Corp.
- How would
you deal with changes being made a week or so before the
ship date?
- How would
you deal with a bug that no one wants to fix? Both the SDE
and his lead have said they won’t fix it.
- Write a
function that counts the number of primes in the range
[1-N]. Write the test cases for this function.
- Given a
MAKEFILE (yeah a makefile), design the data structure that
a parser would create and then write code that iterates
over that data structure
executing commands if needed.
- Write a
function that inserts an integer into a linked list in
ascending order. Write the test cases for this function.
- Test the
save dialog in Notepad. (This was the question I enjoyed
the most).
- Write the
InStr function. Write the test cases for this function.
- Write a
function that will return the number of days in a month
(not using System.DateTime).
- You have 3
jars. Each jar has a label on it: white, black, or
white&black. You have 3 sets of marbles: white, black, and
white&black. One set is stored in one jar. The labels on
the jars are guaranteed to be incorrect (i.e. white will
not contain white). Which jar would you choose from to give
you the best chances of identifying the which set of
marbles in is in which jar.
- Why do you
want to work for Microsoft?
- Write the
test cases for a vending machine. (Those were the questions
I was asked. I had a lot of discussions about how to handle
situations. Such as a tester is focused on one part of an
SDK. During triage it was determined that that portion of
the SDK was not on the critical path, and the tester was
needed elsewhere. But the tester continued to test that
portion because it is his baby. How would you get him to
stop testing that portion and work on what needs to be
worked on? Other situations came up like arranging tests
into the different testing buckets (functional, stress,
perf, etc.).)
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