Systematic Debugging and Error Handling Fundamentals

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

1. 1

   The code shown in the image cannot begin normal execution. What type of error does it contain?

   

   A A syntax error B A runtime error C A logic error
2. 2

   A valid program reads a number and divides 100 by it. If the user enters zero and the program stops with a division-by-zero message, how should the defect be classified?

   A Logic error B Runtime error C Syntax error
3. 3

   The image shows a program that should calculate the average of three scores. Why does it print 67.5 instead of 90?

   

   A The list contains an invalid data type B The loop adds each score twice C The total is divided by one more than the number of scores
4. 4

   After reproducing a bug reliably, which action best supports systematic debugging before changing the program?

   A Modify several suspicious sections simultaneously B Reduce the failure to a small, repeatable test case C Add a catch-all exception handler around the entire program
5. 5

   What normally happens when program execution reaches an enabled breakpoint?

   A Execution pauses before or at the marked statement so state can be inspected B The marked statement is permanently removed from the program C All variables are reset to their initial values
6. 6

   The debugger is paused on the function call shown in the image. Which command should be used to execute the entire calculate function without pausing inside it?

   

   A Continue B Step into C Step over
7. 7

   According to the stack trace in the image, in which function did the reported conversion error originate?

   

   A main B parse_number C load_config
8. 8

   During a long loop, a variable named balance changes unexpectedly. Which debugger feature can pause execution specifically when that variable is modified?

   

   A Watchpoint B Call-stack filter C Syntax highlighter
9. 9

   What is the most appropriate purpose of an assertion such as assert item_count >= 0?

   A To replace validation of all user input B To recover automatically from any external failure C To detect a violated internal assumption during development
10. 10

    Which exception-handling strategy is generally the most reliable?

    A Catch every possible exception and ignore it B Catch anticipated exception types where meaningful recovery is possible C Avoid exception handlers and check only the final output
11. 11

    Why is structured logging usually more useful than scattered temporary print statements when diagnosing a deployed application?

    A Logs can preserve timestamps, severity levels, and contextual fields B Logging guarantees that the program contains no logic errors C Log entries automatically correct failed operations
12. 12

    A regression exists somewhere among 128 ordered code revisions, and each revision can be tested as passing or failing. Which method most efficiently finds the first failing revision?

    A Test every revision from oldest to newest B Inspect only the newest revision repeatedly C Test the midpoint and repeatedly halve the remaining range
13. 13

    The image shows a loop processing an array of length 5. Which change prevents the out-of-range access while still processing every element?

    

    A Start i at 1 and keep the condition i <= length B Change the condition to i < length C Increase the array length to 6 without adding an element
14. 14

    A file is opened inside a try block. Which construct is intended for cleanup that should occur whether the operation succeeds or raises an exception?

    A A finally block B A second try block with no handler C An assertion after the operation