# CBSE Class 12 Computer Science File System MCQs Set B

## File System Class 12 Computer Science MCQ

Class 12 Computer Science students should refer to the following multiple-choice questions with answers for File System in standard 12. These MCQ questions with answers for Grade 12 Computer Science will come in exams and help you to score good marks

### File System MCQ Questions with Answers

#### Question: R command for accessing on line help is

• a) On-line help()
• b) Assist()
• c) Help()
• d) Help.start()

• a) Rdemo()
• b) Sample()
• c) Example()
• d) Demo()

#### Question: R command to open the on line help in aj browser is_________

• a) On-line help()
• b) Assist()
• c) Help()
• d) Help.start()

#### Question: To get help on a particular function_____I help (function name) can be used.

• a) Syntax
• b) Function
• c) Composition
• d) Grammar

#### Question: While quitting R, the software prompts whether the_______values of variables) has to be saved, from the current session.

• a) Information
• b) Data
• c) Variables
• d) All of these

#### Question: The function_______displays a list of all the variables defined.

• a) List_variables()
• b) Disp()
• c) List()
• d) ls()

#### Question: A series of consecutive numbers (range) may be generated using the syntax_________

• a) Begin rend
• b) Start :end
• c) Base :end
• d) None of these

#### Question: In R software________function can be used to find the minimum value for a list.

• a) Median(list)
• b) Mean(list)
• c) Max(list)
• d) Min(list)

#### Question: In R software_______function can be used to find the maximum value for a list.

• a) Median(list)
• b) Mean(list)
• c) Max(list)
• d) Min(list)

#### Question: In R software______function can be used to find the mean for a list.

• a) Median(list)
• b) Mean(list)
• c) Max(list)
• d) Min(list)

#### Question: In R software,_______function can be used to find the median for a list.

• a) Median(list)
• b) Mean(list)
• c) Max(list)
• d) Min(list)

• a) Plotbar
• b) Bar_plot
• c) Barplot
• d) Bar-plot

• a) Data
• b) Info
• c) Student
• d) Variable

#### Question: Related to R commands : >barplot (no_students, main="Faculty wise students", xlab= "faculty", + ylab= "Number of students", names. arg=faculty_names, +ylim=c (0, 1000), border= "blue") Ques: All other arguments have the form________

• a) Name=variable
• b) Value^name
• c) Name=value
• d) Variable=name

• a) Main
• b) Xlab
• c) Ylab
• d) Ylim

• a) Main
• b) Xlab
• c) Ylab
• d) Ylim

• a) Main
• b) Xlab
• c) Ylab
• d) Ylim

#### Question: Related to R commands : >barplot (no_students, main="Faculty wise students", xlab= "faculty", + ylab= "Number of students", names. arg=faculty_names, +ylim=c (0, 1000), border= "blue") Ques: The argument______is used to specify the values to be displayed for the bars of the plot.

• a) Names.arg
• b) Names.org
• c) Names.list
• d) Names.ylim

• a) Main
• b) Xlab
• c) Ylab
• d) Ylim

• a) Main
• b) Xlab
• c) Ylab
• d) Border

• a) #
• b) *
• c) >
• d) +

#### Question: In R software, by_______the graph does not have grid lines.

• a) Default
• b) Command
• c) Argument
• d) None of these

#### Question: Using R software________can also be produced.

• a) Diagrams
• b) Histograms
• c) Figures
• d) Flowcharts

#### Question: _________is one such open source software designed to assist project managers in preparing, maintaining and following a well-defined project plan.

• a) Rational_Plan
• b) Rational-Plan
• c) Rational Plan
• d) Plan Rational

#### Question: _____assists the project managers throughout the life cycle of their projects.

• a) RationaL Plan
• b) Rational-Plan
• c) Rational Plan
• d) Plan Rational

#### Question: ______comprises three different desktops products.

• a) RationaL Plan
• b) Rational-Plan
• c) Rational Plan
• d) Plan Rational

#### Question: Rational Plan comprises of the________desktop product.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan________.allows the users to manage independent projects that do not have common resources and has no interrelations between different projects.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational n Plan_______allows the manager to associate general project information like name, notes, links, assumptions, constraints or risks.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan_______allows creating, editing and deleting calendars, building schedules.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan_________provides project tracking tools such as critical path, mark completion value for tasks, work and cost time phased information.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Using______a printable report can be generated as well as data can be imported from other project management tool or data can be exported into other formats.

• a) RationaL Plan
• b) Rational-Plan
• c) Rational Plan
• d) Plan Rational

#### Question: Rational Plan_______allows the user to manage projects that share company resources across projects.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan______also manages interdependence's between projects.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan________includes all the features of Rational Plan Single Project.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan_______calculates the resources data (work, cost, over allocation) considering their assignments in all projects.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan________allows links between tasks pertaining to different projects, analyzes all our projects data and creates a project Portfolio view.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan______is an additional tool developed to share the project in its original file format (.xrp), but it can be used as well to open Microsoft Project files.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: Rational Plan_________is useful to anybody who needs to check and overview the project's evolution without making changes to the schedule, and for resources to see their assignments.

• a) Single
• b) Multi
• c) Viewer
• d) All of these

#### Question: As of today, the support of______on Ubuntu 10.04 has been removed; it is available for Ubuntu 12.04 and later versions.

• a) RationaL Plan
• b) Rational-Plan
• c) RationalPlan
• d) PlanRational

#### Question: Today________instant messaging service is being used.

• a) Yahoo Messenger
• c) Rediff Bol
• d) All of these

#### Question: The instant messaging services are used for real time like_______

• a) Chatting with text
• b) Audio
• c) Video
• d) All of these

#### Question: _______is one such software that allows the users to make calls over the Internet using computer systems.

• a) Skype
• b) Word
• c) Excel
• d) R software

#### Question: The______service allows users to communicate with peers using voice, video as well as text.

• a) HTML
• b) Media Player
• c) VLC
• d) Skype

#### Question: _______also provides additional features like file transfer and videoconferencing.

• a) Skype
• b) Internet
• c) VLC
• d) R software

#### Question: The Skype software can be downloaded free of cost, though its source code is______and not available for modification.

• a) Viewable
• b) Proprietary
• c) Open-source
• d) Branded

#### Question: To use______a working sound input and output configuration is needed.

• a) Rational Plan
• b) Skype
• c) Word
• d) R software

#### Question: To start Skype, choose Application → Internet

• a) Skype
• b) Java
• c) Ubuntu
• d) R software

#### Question: If Skype is being opened for the first time, it will open an end User License________window.

• a) Arrangement
• b) Treaty
• c) Agreement
• d) Contract

#### Question: To use Skype service, a______user account is needed.

• a) Skype
• b) Ubuntu
• c) Rational Plan
• d) R software

#### Question: The______service also provides the facility of finding the nearest ATM Centre, Bank, Restaurant, Bus-stop or any other such essential place.

• d) Character Maps

#### Question: The________program can be used to enter Unicode characters into any application.

• a) Character Symbol
• b) Character Map
• c) Character Code
• d) Character Application

#### Question: From the_______program Script has to be selected from the left pane first and then double click characters to insert them into the Test to copy area below.

• a) Character Symbol
• b) Character Map
• c) Character Code
• d) Character Application

#### Question: While using______program, spaces and punctuation can be entered by the user from the keyboard directly into the area after clicking in it.

• a) Character Map
• b) Character Codes
• d) Character Selection

#### Question: Brief details of the character currently selected with single-click or entered with double-click are shown in the status line at the bottom, while more details on the character is available in the______tab.

• a) Character Details
• b) Character Map
• c) Character Tools

#### Question: A_______is good solution if one has to type a few characters in another script occasionally.

• a) Character Details
• b) Character Map
• c) Character Tools

• a) P
• b) Q
• c) R
• d) GNU

• a) P
• b) Q
• c) R
• d) GNU

• a) P
• b) Q
• c) R
• d) GNU

#### Question: R software has its own_______language.

• a) Scripting
• b) Object-oriented
• c) Simple
• d) Programming

• a) P
• b) Q
• c) R
• d) GNU

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

#### Question: To use R software in a_______environment, it has to be installed with graphic editors.

• a) DOS
• b) Windows
• c) GUI
• d) All of these

#### Question: Examples of Graphic Editors are_______

• a) R Commander
• b) R Studio
• c) Both (A) and (B)
• d) None of these

#### Question: The above named Graphic Editors are from______Software Center.

• a) Linux
• b) Unix
• c) Ubuntu
• d) Archive Manager

#### Question: To install R software on the machines, give the______command.

• a) Sudo apt-get install r-base r-base-devlop
• b) Studio apt-get install r-base r-base-dev
• c) Sudo apt-get install r-base r-base-dev
• d) None of these

Answer: Sudo apt-get install r-base r-base-dev

• a) Unix
• b) Linux
• c) R
• d) Shell

• a) #
• b) //
• c) /* */
• d) ?

• a) #
• b) //
• c) /* */
• d) ?

#### Question: In R software, number and string are the basic________

• a) Method Types
• b) Declaration Types
• c) Data Types
• d) Variable Types

#### Question: In R software_______are enclosed in single quotes or double quotes.

• a) Numbers
• b) Strings
• c) Characters
• d) Commands

#### Question: In R software, common________and functions are available, just like other programming languages.

• a) Commands
• b) Operators
• c) Numerals
• d) Characters

#### Question: Ordered lists of items (arrays or lists) are commonly used and are also referred to as______

• a) Vectors
• b) Paths
• c) Routes
• d) Directions

• a) C++
• b) Basic
• c) c
• d) ls

• a) Number
• b) String
• c) Character
• d) Operand

#### Question: However, in R software, when both_______of binary operators are lists, their lengths (number of elements in them) should ordinarily be same.

• a) Numbers
• b) Strings
• c) Characters
• d) Operands

#### Question:

The statement > a <-- 10 defines a______'a' and assigns it a value 10.

• a) Numeral
• b) Letter
• c) String
• d) Variable

#### Question:

The statement > a followed by..........key press displays the value of a.

• a) ENTER
• b) TAB
• c) SHIFT
• d) F2

#### Question:

The statement > a*b followed by _____key press multiplies the value of variable 'a' and 'b' and displays the result on the prompt.

• a) ENTER
• b) TAB
• c) SHIFT
• d) F2

#### Question: R command to quitting is_______

• a) Quit()
• b) q()
• c) Exit
• d) All of these

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