PCAP-31-03 5.5 Perform Input/output Operations PCAP-31 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   Which type of object is commonly used as a buffer when reading from a binary file?

   • Abytearray
   • Bstr
   • Cdict
   • Dlist
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   What does the .write() method return after successfully writing a string to a file?

   • AThe number of characters written
   • BThe file object itself
   • CNone
   • DTrue if successful
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   What does f.readline() return when the next line in the file is just an empty line?

   • AA string with a space character
   • BAn empty string ''
   • CNone
   • DA string containing a newline character '\n'
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   What does f.read(10) return when f is a text file object?

   • AThe entire file if it is shorter than 10 characters
   • BThe first 10 characters of the file
   • CThe first 10 bytes of the file
   • DThe first 10 lines of the file
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   What happens if you call read() on a file object after close() has been called?

   • AIt automatically reopens the file
   • BIt returns an empty string
   • CIt returns None
   • DIt raises a ValueError
   Reveal Solution Discussion Select an answer first