PCEP Practice Question: Functions, Tuples, Dictionaries and Exceptions
This PCEP practice question tests your understanding of functions, tuples, dictionaries and exceptions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A critical automation system uses a try-except block to handle errors during file operations. The current code uses a bare except: clause to catch any error and perform cleanup. However, when an operator tries to stop the program with Ctrl+C, the KeyboardInterrupt exception is caught, and the cleanup routine runs, preventing a clean exit. Additionally, if the system runs out of memory, MemoryError is caught. The developers need to modify the exception handling so that system-exiting exceptions (such as KeyboardInterrupt and SystemExit) are not caught, but other exceptions (e.g., FileNotFoundError, PermissionError) are still handled for cleanup. Which modification best achieves this?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change the bare except: to except Exception:
Option A (change to except Exception) is the standard way to avoid catching KeyboardInterrupt and SystemExit because those exceptions inherit from BaseException, not Exception. This will catch all other exceptions that are likely to occur in file operations. Option B (multiple specific except blocks) is too restrictive and may miss unexpected errors. Option C (using finally) does not replace the except block and will still execute cleanup even if the exception is not caught, which may not be desired. Option D (custom exception class) is unnecessary.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Change the bare except: to except Exception:
Why this is correct
except Exception: catches all exceptions that inherit from Exception, excluding KeyboardInterrupt and SystemExit.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Remove the except block entirely and rely on a finally block for cleanup
Why it's wrong here
A finally block alone will run even if no exception occurs, but it does not handle exceptions; the program would still crash.
✗
Replace the single except block with multiple specific except blocks for each expected file error
Why it's wrong here
This is too restrictive; unexpected exceptions would not be caught and might leave the system in an inconsistent state.
✗
Define a custom exception class and raise it for all file errors
Why it's wrong here
This does not address the problem of catching critical system exceptions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the PCEP exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which PCEP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Functions, Tuples, Dictionaries and Exceptions — This question tests Functions, Tuples, Dictionaries and Exceptions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Change the bare except: to except Exception: — Option A (change to except Exception) is the standard way to avoid catching KeyboardInterrupt and SystemExit because those exceptions inherit from BaseException, not Exception. This will catch all other exceptions that are likely to occur in file operations. Option B (multiple specific except blocks) is too restrictive and may miss unexpected errors. Option C (using finally) does not replace the except block and will still execute cleanup even if the exception is not caught, which may not be desired. Option D (custom exception class) is unnecessary.
What should I do if I get this PCEP question wrong?
Identify which PCEP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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