CBSE Class 12 Computer Science File Handling Worksheet Set B

Question. Which function is used to change the position of the File Handle to a given specific position.
a) seek()
b) read()
c) tail()
d) write()

Answer : A

Question. How do you change the file position to an offset value from the start?
a) fp.seek(offset, 0)
b) fp.seek(offset, 1)
c) fp.seek(offset, 2)
d) none of the mentioned

Answer : A

Question. Which is the correct statement with respect of seek() function?
a) 0: sets the reference point at the beginning of the file
b) 1: sets the reference point at the current file position
c) 2: sets the reference point at the end of the file
d) All of these

Answer : D

Question. Which of the following statements correctly explain the function of seek() method?
a) tell the current position within the file.
b) indicate that the next read or write occurs from that position in a file.
c) determine if you can move the file position or not.
d) move the current file position to a different location at a defined offset.

Answer : D

Question. What does the <readlines()> method returns?
a) str
b) a list of lines
c) list of single characters
d) list of integers

Answer : B

Question. Which of the following functions can be used to check if a file “logo” exists?
a) os.path.isFile(logo)
b) os.path.exists(logo)
c) os.path.isfile(logo)
d) os.isFile(logo)

Answer : C

Question. Seek() function with negative offset only works when file is opened in ——– mode.
a) read mode
b) write mode
c) binary mode
d) All of these

Answer : C

Question. What happens if no arguments are passed to the seek function?
a) file position is set to the start of file
b) file position is set to the end of file
c) file position remains unchanged
d) error

Answer : D

Question. What is the use of seek() method in files()?
a) sets the file’s current position at the offset
b) sets the file’s previous position at the offset
c) sets the file’s current position within the file
d) none of the mentioned

Answer : A

Question. To read the next line of the file from a file object fobj, we use:
a) fobj.read(2)
b) fobj.read()
c) fobj.readline()
d) fobj.readlines()

Answer : C

Question. Which of the following commands can be used to read “n” number of characters from a file using the file object <file>?
a) file.read(n)
b) n = file.read()
c) file.readline(n)
d) file.readlines()

Answer : A

Question. What is the use of seek() method in files?
a) sets the file‟s current position at the offset
b) sets the file‟s previous position at the offset
c) sets the file‟s current position within the file
d) none of the mentioned

Answer : A

Question. Which of the following statements correctly explain the function of tell() method?
a) tells the current position within the file.
b) indicates that the next read or write will occur at that many bytes from the beginning of the file.
c) move the current file position to a different location.
d) it changes the file position only if allowed to do so else returns an error.

Answer : A, B

Question. Which of the following command is used to open a file “c:\temp.txt” in append-mode?
a) outfile = open(“c:/temp.txt”, “a”)
b) outfile = open(“c:\\temp.txt”, “rw”)
c) outfile = open(“c:\temp.txt”, “w+”)
d) outfile = open(“c:\\temp.txt”, “r+”)

Answer : A

Question. How do you get the current position within the file?
a) fp.seek()
b) fp.tell()
c) fp.loc
d) fp.pos

Answer : B

Question. Which of the following command is used to open a file “c:\temp.txt” in read-mode only?
a) infile = open(“c:\temp.txt”, “r”)
b) infile = open(“c:\\temp.txt”, “r”)
c) infile = open(file = “c:\temp.txt”, “r+”)
d) infile = open(file = “c:\\temp.txt”, “r+”)

Answer : B

Question. If we open the file in read mode then the initial value of tell() is
a) -1
b) 0
c) 1
d) End of the file

Answer : A

Question. What happens if no arguments are passed to the seek function?
a) file position is set to the start of file
b) file position is set to the end of file
c) file position remains unchanged
d) error

Answer : D

 

Please click on below link to download CBSE Class 12 Computer Science File Handling Worksheet Set B