Exception and Error Handling Across Python, Ruby, Java, and C

Auto audio on: the next questions will be read aloud when you click Continue.

1. 1

   In Python, when does the else block associated with try and except execute?

   

   A After an exception is handled by an except block B When the try block completes without raising an exception C Only after the finally block has completed
2. 2

   What must Java code normally do when calling a method that may throw a checked exception?

   A Catch the exception or declare it with throws B Convert the exception into an error code C Add a finally block to the calling method
3. 3

   What is the primary purpose of an ensure clause in Ruby exception handling?

   A To match multiple exception classes B To retry the failed operation automatically C To run cleanup code whether or not an exception occurs
4. 4

   What is the safest general pattern for using errno after calling a C library function?

   A Read errno before checking the function's documented result B Check for the documented failure result, then inspect errno if applicable C Assume a nonzero errno always means the latest call failed
5. 5

   The diagram highlights KeyboardInterrupt in Python's exception hierarchy. Why is except Exception usually insufficient to catch it?

   

   A KeyboardInterrupt inherits from BaseException but not from Exception B KeyboardInterrupt is a warning rather than an exception C KeyboardInterrupt can only be handled by finally
6. 6

   If several resources are declared in one Java try-with-resources statement, in what order are they closed?

   

   A In declaration order B In an implementation-dependent order C In reverse declaration order
7. 7

   In Python, what does raise NewError() from original_error establish?

   A It discards both exceptions after logging them B It records original_error as the explicit cause of NewError C It raises the two exceptions simultaneously
8. 8

   In Ruby, what does retry do when executed inside a rescue clause associated with a begin block?

   

   A It continues with the statement after the entire begin expression B It reraises the exception without executing the begin block again C It restarts execution of the associated begin block
9. 9

   What does the C function perror typically print?

   A A supplied prefix followed by a message describing the current errno value B A stack trace followed by the source line that failed C Only the numeric return value of the previous function
10. 10

    Which Java multi-catch clause is invalid because its alternatives are related by inheritance?

    

    A catch (IOException | SQLException e) B catch (Exception | IOException e) C catch (IllegalArgumentException | IllegalStateException e)
11. 11

    What does a bare raise statement do inside an active Python except block?

    A It reraises the exception currently being handled B It creates a new generic Exception object C It resumes execution at the failed statement
12. 12

    Which exceptions does a Ruby rescue clause with no specified exception class catch by default?

    A Every descendant of Exception B Only RuntimeError C StandardError and its descendants
13. 13

    How does setjmp report initial execution versus a later return caused by longjmp in C?

    

    A It returns 0 initially and a nonzero value after longjmp B It returns a negative value initially and 0 after longjmp C It returns the same value in both cases
14. 14

    A Java method's try block throws an exception that matches its catch clause, and the method also has a finally block. Which execution order does the flow diagram represent?

    

    A try, finally, catch, continuation B try, matching catch, finally, continuation C try, matching catch, continuation, finally
15. 15

    In Python, what does it mean if a context manager's __exit__ method returns a truthy value after receiving exception information?

    

    A The with block is immediately executed again B The exception is automatically converted to a warning C The exception is considered handled and is suppressed
16. 16

    Which situation can prevent a Java finally block from executing?

    A The JVM terminates, such as through System.exit B A return statement executes inside the try block C A matching catch block handles an exception
17. 17

    Inside a Ruby rescue clause, what does raise with no arguments normally do?

    A It raises a new StandardError with an empty message B It reraises the exception currently being handled C It exits the rescue clause without an exception
18. 18

    What is the role of strerror in conventional C error reporting?

    A It clears errno and reports whether clearing succeeded B It converts a failed function's return value into a signal C It returns a descriptive string for a supplied error number
19. 19

    Which statement best describes ordinary error handling in the C language?

    A C commonly uses return values, status codes, errno, and output parameters because it has no built-in exception system B C automatically converts every runtime failure into a catchable exception C C requires all recoverable errors to be handled through operating-system signals