CBSE Class 12 Computer Science Fundamentals of Computer Concepts

Question. The MS-DOS operating system is a
a) graphical user interface, single-tasking operating system
b) graphical user interface, multi-tasking operating system
c) command-driven interface, single-tasking operating system
d) command-driven interface, multi-tasking operating system
e) None of these

Answer: C

Question. An essential difference between the operating system that runs a typical desktop computer and the operating system that runs a typical PDA is that
a) the desktop OS has a graphical user interface whereas the PDA OS does not
b) the desktop OS can run several programs simultaneously whereas the PDA OS cannot
c) the desktop OS manages hardware resources whereas the PDA OS does not
d) the desktop computer has an OS whereas a PDA does not
e) None of these

Answer: B

Question. Which of the following was an early desktop operating system that included an integrated graphic user interface with point-and-click features?
a) MS-DOS
b) Mac OS
c) Unix
d) Gnome
e) None of these

Answer: B

Question. To set a register or counter to the all-zero-state is...
a) Rerun
b) Reset
c) Remote
d) Release
e) None of these

Answer: B

Question. The category of operating system that you most likely have running on your PDA computer is a ____________ operating system.
a) real-time
b) single-user, single-task
c) single-user, multi-task
d) multi-user, multi-task
e) None of these

Answer: B

Question. The invention of the slide rule is attributed to ...
a) Babbage
b) Oughtred
c) Pascal
d) Napier
e) None of these

Answer: B

Question. A real-time operating system is most likely to be used for which of the following tasks?
a) Controlling access to a shared printer in a network
b) Ensuring that the system clock works correctly on a server
c) Managing the access to system files in a laptop computer
d) Controlling the fuel injection system of an automobile engine
e) None of these

Answer: D

Question. The ability of an operating system to control the activities of multiple programs at the same time is called
a) multitasking
b) multi-processing
c) multi-operating
d) multi-paging
e) None of these

Answer: A

Question.A set of information that defines the status of resources allocated to a process is...
a) Process control
b) ALU
c) Register Unit
d) Process description
e) None of these

Answer: D

Question. Which one of the following input device is userprogrammable?
a) Dumb terminal
b) Smart terminal
c) VDT
d) Intelligent terminal
e) None of these

Answer: D

Question. The ____________ operating system was initially created in the early 1970s at AT&T’s Bell Labs.
a) Linux
b) DOS
c) Unix
d) GNU
e) None of these

Answer: C

Question. A family of polynomial block codes designed to correct burst errors is known as
a) Bar codes
a) Gray codes
c) Fire codes
d) mnemonics codes
e) None of these

Answer: C

Question. CD-ROM can store upto ____ MB of data
a) 600 MB
b) 400 Floppy disk
c) 320 MB
d) Both (a) and (b)
e) None of these

Answer: D

Question. A framwork in which circuit boards can be mounted is...
a) Switch circuit
b) Chip
c) Card cage
d) Bar code
e) None of these

Answer: C

Question. Which of the following is an example of a real-time operating system?
a) Lynx
b) MS DOS
c) Windows XP
d) Symbian
e) None of these

Answer: A

Question. A convolutional code that is prone to catastrophic error propagation is...
a) Mnemonics
b) Gray code
c) machine code
d) Catastrophic code
e) None of these

Answer: D

Question. The most recent version of the Mac OS is based on the ____________ operating system
a) Windows
b) Linux
c) Unix
d) CMOS
e) None of these

Answer: C

Question. A computer assisted method for the recording and analysing of existing hypothetical systems is known as
a) Distributed processing
b) Data transmission
c) Data link
d) Data flow
e) None of these

Answer: D

Question. Which of the following is NOT an advantage of opensource operating systems over proprietary versions?
a) Free use and distribution
b) Availability of technical support
c) Availability of source code
d) Ability to modify code
e) None of these

Answer: B

Question. A Plastic card similar to a credit card but having some memory and a microprocessor embedded within it is a) Punched paper tape
b) Chip card
c) Card punch
d) Magnetic tape
e) None of these

Answer: B

Question. Use of icons and windows are characteristic of a________ interface
a) command-driven
b) windows-oriented
c) graphical-user
d) menu-driven
e) None of these

Answer: C

Question. The barcode which is used on all types of items, is read by a scanning device directly into the computer. What is the name of this scanning device?
a) Laser scanner
b) Wand
c) OCR
d) MICR
e) None of these

Answer: A

Question. The main purpose of the offline device is...
a) To reduce the no.of operator errors in recording data
b) To save computer time
c) To save floor space in the cimputer centre
d) All of the above
e) None of these

Answer: B

Question. The essential difference between an operating system like Linux and one like Windows is that
a) Windows can run with an Intel processor, whereas Linux cannot
b) Linux is proprietary, whereas Windows is not
c) any programmer can modify Linux code, which is not permitted with Windows
d) there are multiple versions of Linux, but only one version of Windows
e) None of these

Answer: C

Question. Which of the can't spread virus
a) An e-mail with attachment
b) A plain text mail
c) Downloading files over the web
d) None of the above

Answer: B

Question. "Zipping" a file means
a) Encrypting the message
b) Compressing the message
c) Transfer the message
d) All of the above

Answer: B

Question. There is a new anti-virus software update available, when it is downloaded to your computer
a) Everyday
b) Only in the night
c) When you next switch on your computer
d) All of the above

Answer: C

Question. CPU capacity can be measured in
a) BPS
b) MIPS
c) MHz
d) MPI

Answer: B

Question. MPIS stands for
a) Million Instructions Per Second
b) Million Instructions Per Season
c) Monthly Instructions Per Second
d) Million Inputs Per Second

Answer: A

Question. Which combination of keys needs to be pressed to make a percent sign?
a) Shift+2
b) Shift+3
c) Shift+4
d) Shift+5

Answer: D

Question. BPS stands for
a) Bits Per Second
b) Bits Per Season
c) Bytes Per Second
d) Bits Per System

Answer: A

Question. In a network, the computer that stores the files and process the data is named as
a) Server
b) Terminal
c) Modem
d) All of the above

Answer: A

Question. In processing cheques which of the following I/O techniques have banks traditionally followed?
a) OCR
b) MICR
c) Barcode
d) VRT

Answer: B

Question. What is object of UPS?
a) Using for storage
b) To increase the speed of a computer
c) Provides backup power
d) All of the above

Answer: C

Question. How are data organized in a spreadsheet?
a) Rows and Columns
b) Boxes
c) Tables
d) None of the above

Answer: A

Question. Which of the following mode we use to deliver e-mail
a) Postal
b) Courier
c) Computer
d) Fax

Answer: C

Question. QWERTY is used with reference to
a) Monitor
b) Printer
c) Keyboard
d) Mouse

Answer: C

Question. Integrated Circuits (IC) chips used in computers are made with
a) Gold
b) Silver
c) Silicon
d) Coper

Answer: C

Question. Viruses are called that because
a) They are viruses
b) They can copy themselves and spread
c) Both (a) and (b)
d) None of the above

Answer: B

Question. What is the full form of WWW?
a) World Wide Web
b) World With Web
c) Work Wide Web
d) World Wide Wet

Answer: A

Question. Which of the following Command is required to reboot the computer
a) CTRL+ALT+DEL
b) CTRL+ALT+TAB
c) CTRL+ALT+SHIFT
d) CTRL+SHIFT+DEL

Answer: A

Question. Select the ODD one
a) Operating system
b) Interpreter
c) Compiler
d) Assembler

Answer: A

Question. PC stands for
a) Practical Computer
b) Personal Computer
c) Private Computer
d) Personal Contact

Answer: B

Question. What process should be used to recall a document saved previously?
a) Copy
b) Save
c) Retrieve
d) Enter

Answer: C

Question. The retrieval of information from the computer is defined as
a) Data processing
b) Input
c) Output
d) All of the above

Answer: C

Question. Numbers are stored and transmitted inside a computer in
a) Binary form
b) ASCII code form
c) Alphabets form
d) Numerical form

Answer: B

Question. Which of the following is different from other
a) Internet
b) Windows
c) Unix
d) Linux

Answer: A

Question. Which one of the following is NOT a computer language?
a) MS-Excel
b) BASIC
c) COBOL
d) C++

Answer: A

Question. Modem speeds are measured in
a) BPS
b) KBPS
c) MBPS
d) MIPS

Answer: A

Question. Software programs that allow you to legally copy files and give them away at no cost are called which of the following
a) Time sharing
b) Public domain
c) Shareware
d) None of the above

Answer: B

Question. "C" is
a) A letter
b) A word
c) A language
d) An alphabet

Answer: C

Question. Difference Engine invented by
a) Charles Babbage
b) John McCarthy
c) Pascal
d) Newton

Answer: A

Question. VIRUS stands for
a) Vital Information Recourse Under Siege
b) Vital Information Reason Under Siege
c) Vital Information Recourse Under System
d) Virus Information Recourse Under Siege

Answer: A

Question. ------ Is known as unauthorized access into others system
a) Hacking
b) Encryption
c) Decryption
d) None of the above

Answer: A

Question. First generation computer systems used
a) Transistors
b) Vacuum Tubes
c) Both (a) and (b)
d) None of the above

Answer: B

Question. What is the Super Computer developed in India
a) CRAY
b) PARAM
c) Both (a) and (b)
d) None of the above

Answer: B

Question. Doing research by using an on-line database instead of a printed set of similar information offers which of the following advantage
a) More current information
b) Easier to understand
c) Better charts
d) None of the above

Answer: A

Question. LAN speeds are measured in
a) BPS
b) KBPS
c) MBPS
d) MIPS

Answer: C

Question. The term that we use to describe physical components of the system
a) Hardware
b) Input
c) Software
d) None of the above

Answer: A

Question. Which of the following is used to indicate the location on the computer monitor
a) Mouse
b) Cursor
c) Both a) and b)
d) None of the above

Answer: B