Chapter 3: Data File Handling | class 12th | mcqs of computer science

File Handling MCQ Questions Class 12 Computer Science with Answers

Question: Storage devices of a computer can be broadly classified into_______categories.

• a) One
• b) Two
• c) Three
• d) Four

Answer: Two

Question: _______storage is temporary.

• a) Volatile
• b) Non-volatile
• c) Movable
• d) Immovable

Answer: Volatile

Question: In_______storage values stored in variables are lost when a computer is shutdown.

• a) Volatile
• b) Non-volatile
• c) Movable
• d) Immovable

Answer: Volatile

Question: A Java program that stores a value in a________uses Random Access Memory (RAM).

• a) Cell
• b) Program
• c) Variable
• d) All of these

Answer: Variable

Question: Apart from variables, objects and their references are generally stored in______

• a) ROM
• b) PROM
• c) RAM
• d) Hard Disk

Answer: RAM

Question: Once the program terminates or the computer shuts down, the data is________from RAM.

• a) Stored
• b) Lost
• c) Available
• d) Accessible

Answer: Lost

Question: _______storage is permanent storage.

• a) Volatile
• b) Non-volatile
• c) Movable
• d) Immovable

Answer: Non-volatile

Question: Data is not_______when a computer loses power in a Non-volatile storage.

• a) Stored
• b) Lost
• c) Available
• d) Accessible

Answer: Lost

Question: When a Java program is saved on a disk, it is using______storage.

• a) Temporary
• b) Provisional
• c) Conditional
• d) Permanent

Answer: Permanent

Question: A computer_______is a collection of data stored on a non-volatile device.

• a) File
• b) Desktop
• c) Directory
• d) Device

Answer: File

Question: _______exist on permanent storage devices, such as hard disks, USB drives, optical disks and compact discs.

• a) Files
• b) Manuals
• c) Directories
• d) Devices

Answer: Files

Question: Data stored in files is often called_______data.

• a) Text
• b) Persistent
• c) Informative
• d) Binary

Answer: Persistent

Question: Files can be further classified broadly into_______categories.

• a) One
• b) Two
• c) Three
• d) Four

Answer: Two

Question: ______files contain data that can be read in a text editor.

• a) Text
• b) Manuscript
• c) Memo
• d) Binary

Answer: Text

Question: In the_______files the data has been encoded using a scheme such as ASCII or Unicode.

• a) Text
• b) Memo
• c) Informative
• d) Binary

Answer: Text

Question: ______files can be data files that contain facts, such as payroll file that contains employee numbers, names and salaries.

• a) Binary
• b) Memo
• c) Program
• d) Text

Answer: Text

Question: Some_______files can be program files or application files mat store software instructions.

• a) Binary
• b) Memo
• c) Program
• d) Text

Answer: Text

Question: are examples of editors through which text files can be created.

• a) G edit
• b) vi
• c) pico
• d) All of these

Answer: All of these

Question: The extensions of the files created through the above editor can have an extension like_________

• a) Text
• b) Java
• c) C
• d) All of these

Answer: All of these

Question: _____files contain data that has not been encoded as text.

• a) Binary
• b) Memo
• c) Informative
• d) Text

Answer: Binary

Question: The contents of a_______file are in binary format, which means the data is access terms of bytes.

• a) Binary
• b) Memo
• c) Informative
• d) Text

Answer: Binary

Question: The Binary files extensions examples are_______

• a) Jpeg
• b) Mp3
• c) Class
• d) All of these

Answer: All of these

Question: Java language supports various operations that can be performed on file or on_______

• a) Programs
• b) Attributes
• c) Directories
• d) Queries

Answer: Directories

Question: _______operations that can be performed on files using Java programs.

• a) Determining the path of a file or a directory
• b) Opening a file
• c) Writing to a file
• d) All of these

Answer: All of these

Question: _______operations that can be performed on files using Java programs.

• a) Reading from a file
• b) Closing or deleting a file
• c) Querying the attributes of a file
• d) All of these

Answer: All of these

Question: Java provides built-in_______that contains methods to help with the tasks related to file.

• a) Variables
• b) Packages
• c) Classes
• d) Devices

Answer: Classes

Question: The Java classes are present in package.

• a) Java, bytes
• b) Java.io
• c) Java.util
• d) Java.method

Answer: Java.io

Question: Java uses the concepts of______in file handling.

• a) File systems
• b) Streams
• c) Packages
• d) Classes

Answer: Streams

Question: Java provides_____different categories of java classes to perform I/O operations on bytes and characters.

• a) One
• b) Two
• c) Three
• d) Four

Answer: Two

Question: Which of the following is not a Binary file extension ?

• a) Jpeg
• b) Mp3
• c) Class
• d) txt

Answer: txt

Question: Which of the following is not a Text file extension ?

• a) Txt
• b) Java
• c) Jpeg
• d) C

Answer: Jpeg

Question: The_______class encapsulates information about the properties of a file or a directory.

• a) Java.io.file
• b) Java.oi.file
• c) Java.util.io
• d) Java.io.util

Answer: Java.io.file

Question: ________class can be used to access attributes of files and directions.

• a) File
• b) I/O
• c) Java
• d) util

Answer: File

Question: A programmer can do______a file or a directory.

• a) Create
• b) Rename
• c) Delete
• d) All of these

Answer: All of these

Question: The creation of a file Object that belongs to_____class does not imply that the file or directory exists.

• a) File
• b) I/O
• c) Java
• d) Util

Answer: File

Question: The______of a file can also be accessed like its permissions, length of a file or last modification time.

• a) Features
• b) Attributes
• c) Qualities
• d) Traits

Answer: Attributes

Question: A file________encapsulates a path name or reference to a physical file or a directory on the hard disk.

• a) Method
• b) Class
• c) Object
• d) Handler

Answer: Object

Question: There are nearly______that can be used to perform various operations on a file or a directory.

• a) 25 methods
• b) 30 methods
• c) 35 methods
• d) 20 methods

Answer: 30 methods

Question: _______does not provide any method to read from a file or write into a file.

• a) File class
• b) File method
• c) File object
• d) File operator

Answer: File class

Question: There are several_______classes to perform to read from a file or write into a file.

• a) File
• b) Stream
• c) Package
• d) Object

Answer: Stream

Question: By using the file class, one can create a______to any file by providing its absolute path in string format or by providing the relative path.

• a) Location
• b) Reference
• c) Stream
• d) Object

Answer: Reference

Question: The file class provides_______constructors to refer a file or a directory.

• a) File (String path)
• b) File (String directory_path, String file_name)
• c) File (File directory, String file_name)
• d) All of these

Answer: All of these

Question: In Linux, “password” file is present in_______directory stores the information of the users existing in the system.

• a) “/etc”
• b) “/pwd”
• c) “/file”
• d) “/dir”

Answer: “/etc”

Question: Suppose one wants to display its attributes, then its Java file object can be created using_______ways.

• a) One
• b) Two
• c) Three
• d) Four

Answer: Three

Question: _______method of file class returns true if the file or directory exists, otherwise returns false.

• a) Boolean exists( )
• b) Boolean is File()
• c) Boolean is Directory( )
• d) Boolean is Hidden( )

Answer: Boolean exists( )

Question: ______method of file class returns true if the file exists, otherwise returns false.

• a) Boolean exists ( )
• b) Boolean is File( )
• c) Boolean is Directory( )
• d) Boolean is Hidden( )

Answer: Boolean is File( )

Question: _____method of file class returns true if the directory exists, otherwise returns false.

• a) Boolean exists( )
• b) Boolean is File( )
• c) Boolean is Directory( )
• d) Boolean is Hidden( )

Answer: Boolean is Directory( )

Question: _______method of file class returns true if the file or directory is hidden.

• a) Boolean exists ( )
• b) Boolean is File( )
• c) Boolean is Directory( )
• d) Boolean is Hidden( )

Answer: Boolean is Hidden( )

Question: ______method of file class returns the absolute path of the file exists or directory.

• a) String[ ] list( )
• b) String get Path( )
• c) String get Name( )
• d) String get Absolute Path()

Answer: String get Absolute Path()

Question: ________method of file class returns the name of the file or directory referred by the object.

• a) String[ ] list( )
• b) String get Path( )
• c) String get Name( )
• d) String get Absolute Path()

Answer: String get Name( )

Question: _______method of file class returns the path to the file or directory.

• a) String[ ] Hst( )
• b) String get Path( )
• c) String get Name( )
• d) String get Absolute Path()

Answer: String get Path( )

Question: _______method of file class returns the name of the files and directories in a directory.

• a) String[ ] list( )
• b) String get Path( )
• c) String get Name( )
• d) String get Absolute Path()

Answer: String[ ] list( )

Question: _______method of file class returns the number of bytes in that file.

• a) Long length( )
• b) File[ ] list Files( )
• c) Both (A) and (B)
• d) None of these

Answer: Long length( )

Question: ________method of file class returns an array of abstract path names denoting the files in the directory.

• a) Long length ( )
• b) File[ ] list Files( )
• c) Both (A) and (B)
• d) None of these

Answer: File[ ] list Files( )

Question: ______method to list all the files present in a directory.

• a) Display()
• b) List( )
• c) Dir()
• d) Files()

Answer: List( )

Question: To modify a file or display the contents of a file, the concept of______has to be understood.

• a) Files
• b) Streams
• c) Packages
• d) Objects

Answer: Streams

Question: Java uses______classes to carry out read and write operations on files.

• a) Files
• b) Streams
• c) Packages
• d) Objects

Answer: Streams

Question: ______is an input device.

• a) Monitor
• b) Speaker
• c) Keyboard
• d) Plotter

Answer: Keyboard

Question: ______is an output device.

• a) Monitor
• b) Speaker
• c) Keyboard
• d) Plotter

Answer: Monitor

Question: ________can be classified as both input and output device as data can be stored and read from the files.

• a) Monitor
• b) Speaker
• c) Keyboard
• d) Hard disk

Answer: Hard disk

Question: _________are manufactured by various companies and come with different storage capacities like 500GB or 1 TB.

• a) Monitor
• b) Speaker
• c) Keyboard
• d) Hard disk

Answer: Hard disk

Question: ______can be connected using different cables like USB or SATA.

• a) Hard disk
• b) Scanner
• c) Printer
• d) Mouse

Answer: Hard disk

Question: A Java programmer does not need to worry about the technical details like type of______or its capacity while developing a program to perform read / write operations over the files

• a) Hard disk
• b) Scanner
• c) Printer
• d) Mouse

Answer: Hard disk

Question: The above point is possible because Java language provides functionality of______

• a) Files
• b) Streams
• c) Directories
• d) Objects

Answer: Streams

Question: A______is an abstract representation of an input or output device that is used as a source or destination for data.

• a) File
• b) Directory
• c) Stream
• d) Disk

Answer: Stream

Question: Visualize a______as a sequence of bytes that flows into the program or that flows out of the program.

• a) File
• b) Directory
• c) Stream
• d) Disk

Answer: Stream

Question: One can write data or read data using_______

• a) Files
• b) Streams
• c) Directories
• d) Objects

Answer: Streams

Question: When data is written to stream, the stream is called an________

• a) Output stream
• b) Input stream
• c) I/O stream
• d) Both (A) and (B)

Answer: Output stream

Question: The_______can transfer data from the program to a file on a hard disk or a monitor or to some other computer over the network.

• a) Output stream
• b) Input stream
• c) I/O stream
• d) Both (A) and (B)

Answer: Output stream

Question: An______is used to read data from an external device to the program.

• a) Output stream
• b) Input stream
• c) I/O stream
• d) Both (A) and (B)

Answer: Input stream

Question: _______can transfer data from keyboard or from the file on a hard disk to the program.

• a) Output stream
• b) Input stream
• c) I/O stream
• d) Both (A) and (B)

Answer: Input stream

Question: The main reason for using streams for input or output operations is to make our program independent of the_______involved.

• a) Hard Disks
• b) Keyboards
• c) Printers
• d) Devices

Answer: Devices

Question: _______is advantage of using streams.

• a) Programmer does not need to worry about the technical details of the device.
• b) The program can work for a variety of input/ output devices without any changes to the source code.
• c) Both (A) and (B)
• d) None of these

Answer: Both (A) and (B)

Question: To understand byte streams and character streams, one needs to differentiate between character and byte______

• a) Representation
• b) Collection
• c) Numbers
• d) Particulars

Answer: Representation

Question: If ‘5’ is represented as a Character, its ASCII value will be______

• a) 51
• b) 52
• c) 53
• d) 54

Answer: 53

Question: If 5 is represented as a character, its binary representation will be_______

• a) 53
• b) 5
• c) 101
• d) 00110101

Answer: 00110101

Question: If ‘5’ is represented as a binary number, then its value will be______

• a) 53
• b) 5
• c) Five
• d) 101

Answer: 5

Question: If ‘5* is represented as a binary number, then its binary representation will be_______

• a) 00000101
• b) 11001100
• c) 10101100
• d) 11111000

Answer: 00000101

Question: A character is generally stored using ASCII or Unicode format but when it is used for calculation purpose and then it’s________value is meaningful.

• a) Binary
• b) Actual
• c) Objective
• d) Text

Answer: Binary

Question: In the statement int i = 32, the_____is true.

• a) Declares ‘i’ as an integer type variable
• b) That T stores number 32.
• c) Both (A) and (B)
• d) None of these

Answer: Both (A) and (B)

Question: The number 32 can be represented as two separate_______’3′ and ‘2’.

• a) Numbers
• b) Values
• c) Characters
• d) All of these

Answer: Characters