Exam 70-487 topic 2 question 7 discussion

All are wrong. A. has a try catch that will always complete the for loop, thus SaveChanges 6x. B. reuses the previous exception if !IsTransient, thus it gets stuck in an endless loop. C. gives up after receiving a transient error, which are normally the type you want to retry. It still saves atleast twice. D. has the same issue as A.

The question does not show the source code of FlightInfoContext.cs in which the IsTransient method is implemented (code can be found on other web sites). private bool IsTransient(int ex) { var errors = new[] { 10053, 10054, 64 }; return errors.Contains(ex); } - IsTransient(Exception ex) returns true, if exception number is 10053, 10054 or 64. - Socket error (10053) – An established connection was aborted by the software in your host machine. - Socket error (10054) – The virtual circuit was reset by the remote end. - Error (64) – The specified network name is no longer available. - Error (64) – Host not available. - Answer A is correct, retry 5 times if the exception number is connection failure related 10053, 10054 or 64.

A is correct. In older dumps it is the only similar option provided :)

A is correct.

This is the second weird question. Answer A clearly correct. But answer D are correct too. Well, I do know what transient error does mean. But whichever transient or other error occur - answer A and D will not break the loop and make five attemps. So both this answers are correct and have the same logic.