12-computer-science-python-binary-files-mcq

🧠 Python Binary Files – 20 MCQs

1. What is the file mode to open a binary file for reading?

• A) 'r'

• B) 'rb'

• C) 'wb'

• D) 'ab' 👉 Show Answer

2. Which module is used to work with binary files in Python?

• A) math

• B) pickle

• C) os

• D) random 👉 Show Answer

3. What does pickle.dump() do?

• A) Reads data from a binary file

• B) Writes a Python object to a binary file

• C) Deletes a binary file

• D) Converts text to binary 👉 Show Answer

4. What does pickle.load() return?

• A) A string

• B) A list

• C) The original Python object

• D) A byte stream 👉 Show Answer

5. Which of the following is a binary file extension?

• A) .txt

• B) .csv

• C) .jpg

• D) .py 👉 Show Answer

6. What is the default protocol used by pickle.dump()?

• A) Protocol 0

• B) Protocol 1

• C) Protocol 3

• D) Highest available protocol 👉 Show Answer

7. Which mode appends data to a binary file?

• A) 'wb'

• B) 'ab'

• C) 'rb'

• D) 'r+' 👉 Show Answer

8. What is the data type returned by f.read() in binary mode?

• A) String

• B) List

• C) Bytes

• D) Dictionary 👉 Show Answer

9. Which method is used to serialize Python objects?

• A) write()

• B) dump()

• C) save()

• D) store() 👉 Show Answer

10. What happens if you try to unpickle a corrupted file?

• A) Returns None

• B) Raises FileNotFoundError

• C) Raises UnpicklingError

• D) Skips the file 👉 Show Answer

11. Which of the following is NOT a valid binary mode?

• A) 'wb'

• B) 'rb'

• C) 'ab'

• D) 'rbb' 👉 Show Answer

12. What does protocol=0 in pickle.dump() signify?

• A) Latest protocol

• B) ASCII format

• C) Oldest protocol

• D) JSON format 👉 Show Answer

13. Which function is used to open a file in Python?

• A) openfile()

• B) fileopen()

• C) open()

• D) readfile() 👉 Show Answer

14. What does 'wb' mode do?

• A) Opens file for reading

• B) Opens file for writing in binary

• C) Opens file for appending

• D) Opens file for editing 👉 Show Answer

15. Which method reads all lines from a file?

• A) read()

• B) readline()

• C) readlines()

• D) readall() 👉 Show Answer

16. What is the purpose of seek() method?

• A) To close the file

• B) To find a word

• C) To move the file pointer

• D) To delete content 👉 Show Answer

17. Which method is used to write multiple strings to a file?

• A) write()

• B) writelines()

• C) dump()

• D) append() 👉 Show Answer

18. What does fix_imports=True do in pickle.dump()?

• A) Fixes syntax errors

• B) Ensures compatibility between Python versions

• C) Imports modules automatically

• D) Converts text to binary 👉 Show Answer

19. Which file mode allows both reading and writing without erasing data?

• A) 'w+'

• B) 'r+'

• C) 'wb'

• D) 'rb' 👉 Show Answer

20. What is the output type of pickle.load()?

• A) Byte stream

• B) Pickled object

• C) Original Python object

• D) Encoded string 👉 Show Answer

Python Binary Files – Class 12 MCQs

1. What is the file mode to open a binary file for reading?
   Show Answer

   B) ‘rb’
2. Which module is used to work with binary files in Python?
   Show Answer

   B) pickle
3. What does pickle.dump() do?
   Show Answer

   B) Writes a Python object to a binary file
4. What does pickle.load() return?
   Show Answer

   C) The original Python object
5. Which of the following is a binary file extension?
   Show Answer

   C) .jpg
6. What is the default protocol used by pickle.dump()?
   Show Answer

   D) Highest available protocol
7. Which mode appends data to a binary file?
   Show Answer

   B) ‘ab’
8. What is the data type returned by f.read() in binary mode?
   Show Answer

   C) Bytes
9. Which method is used to serialize Python objects?
   Show Answer

   B) dump()
10. What happens if you try to unpickle a corrupted file?
    Show Answer

    C) Raises UnpicklingError
11. Which of the following is NOT a valid binary mode?
    Show Answer

    D) ‘rbb’
12. What does protocol=0 in pickle.dump() signify?
    Show Answer

    C) Oldest protocol
13. Which function is used to open a file in Python?
    Show Answer

    C) open()
14. What does ‘wb’ mode do?
    Show Answer

    B) Opens file for writing in binary
15. Which method reads all lines from a file?
    Show Answer

    C) readlines()
16. What is the purpose of seek() method?
    Show Answer

    C) To move the file pointer
17. Which method is used to write multiple strings to a file?
    Show Answer

    B) writelines()
18. What does fix_imports=True do in pickle.dump()?
    Show Answer

    B) Ensures compatibility between Python versions
19. Which file mode allows both reading and writing without erasing data?
    Show Answer

    B) ‘r+’
20. What is the output type of pickle.load()?
    Show Answer

    C) Original Python object