CBSE Class 12 Computer Science File System MCQs Set B

Question: R command for accessing on line help is

a) On-line help()

b) Assist()

c) Help()

d) Help.start()

Answer: Help()

Question: R command for viewing some demonstration! is________

a) Rdemo()

b) Sample()

c) Example()

d) Demo()

Answer: 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()

Answer: 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

Answer: Syntax

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

Answer: Data

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

a) List_variables()

b) Disp()

c) List()

d) ls()

Answer: 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

Answer: Start :end

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)

Answer: 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)

Answer: Max(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)

Answer: Mean(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)

Answer: Median(list)

Question: In R software, the function________with various arguments is used for drawing a plot.

a) Plotbar

b) Bar_plot

c) Barplot

d) Bar-plot

Answer: Barplot

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 first argument (no_students) specifies the______list.

a) Data

b) Info

c) Student

d) Variable

Answer: Data

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

Answer: Name=value

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 main title in the plot.

a) Main

b) Xlab

c) Ylab

d) Ylim

Answer: Main

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 X-axis label in the plot.

a) Main

b) Xlab

c) Ylab

d) Ylim

Answer: Xlab

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 Y-axis label in the plot.

a) Main

b) Xlab

c) Ylab

d) Ylim

Answer: Ylab

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

Answer: Names.arg

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 range of values to be plotted on the Y-axis in the plot.

a) Main

b) Xlab

c) Ylab

d) Ylim

Answer: 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 border color in the plot.

a) Main

b) Xlab

c) Ylab

d) Border

Answer: Border

Question: In R software, for long commands, when Enter is pressed before the command is complete, R issues the_____prompt until the command is completed.

a) #

b) *

c) >

d) +

Answer: +

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

a) Default

b) Command

c) Argument

d) None of these

Answer: Default

Question: Using R software________can also be produced.

a) Diagrams

b) Histograms

c) Figures

d) Flowcharts

Answer: Histograms

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

Answer: Rational Plan

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

a) RationaL Plan

b) Rational-Plan

c) Rational Plan

d) Plan Rational

Answer: Rational Plan

Question: ______comprises three different desktops products.

a) RationaL Plan

b) Rational-Plan

c) Rational Plan

d) Plan Rational

Answer: Rational Plan

Question: Rational Plan comprises of the________desktop product.

a) Single

b) Multi

c) Viewer

d) All of these

Answer: 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

Answer: Single

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

Answer: Single

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

a) Single

b) Multi

c) Viewer

d) All of these

Answer: Single

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

Answer: Single

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

Answer: Rational Plan

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

Answer: Multi

Question: Rational Plan______also manages interdependence's between projects.

a) Single

b) Multi

c) Viewer

d) All of these

Answer: Multi

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

a) Single

b) Multi

c) Viewer

d) All of these

Answer: Multi

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

Answer: Multi

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

Answer: Multi

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

Answer: Viewer

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

Answer: Viewer

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

Answer: RationalPlan

Question: Today________instant messaging service is being used.

a) Yahoo Messenger

b) Google Talk

c) Rediff Bol

d) All of these

Answer: 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

Answer: 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

Answer: Skype

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

Answer: Media Player

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

a) Skype

b) Internet

c) VLC

d) R software

Answer: Skype

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

Answer: Branded

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

a) Rational Plan

b) Skype

c) Word

d) R software

Answer: Skype

Question: To start Skype, choose Application → Internet

a) Skype

b) Java

c) Ubuntu

d) R software

Answer: Skype

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

Answer: Agreement

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

a) Skype

b) Ubuntu

c) Rational Plan

d) R software

Answer: Skype

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

a) Google Tools

b) Google Watch

c) Google Maps

d) Character Maps

Answer: Google 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

Answer: Character Map

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

Answer: Character Map

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

c) Google Maps

d) Character Selection

Answer: Character Map

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

d) Google Maps

Answer: Character Details

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

d) Google Maps

Answer: Character Details

Question: ______is a free software environment for statistical computing.

a) P

b) Q

c) R

d) GNU

Answer: R

Question: R software is a_______project.

a) P

b) Q

c) R

d) GNU

Answer: GNU

Question: ______software is widely used for statistical analysis.

a) P

b) Q

c) R

d) GNU

Answer: R

Question: R software has its own_______language.

a) Scripting

b) Object-oriented

c) Simple

d) Programming

Answer: Scripting

Question: ______software has a case-sensitive language.

a) P

b) Q

c) R

d) GNU

Answer: R

Question: R software has______work environments namely Command Line and Graphical.

a) one

b) Two

c) Three

d) Four

Answer: Two

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

Answer: GUI

Question: Examples of Graphic Editors are_______

a) R Commander

b) R Studio

c) Both (A) and (B)

d) None of these

Answer: Both (A) and (B)

Question: The above named Graphic Editors are from______Software Center.

a) Linux

b) Unix

c) Ubuntu

d) Archive Manager

Answer: Ubuntu

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

Question: To invoke the_______scripts from terminal window, open terminal and type on the command prompt.

a) Unix

b) Linux

c) R

d) Shell

Answer: R

Question: Just like the Linux shell, R uses______as the comment marker.

a) #

b) //

c) /* */

d) ?

Answer: #

Question: Any text following_______up to the end of the line, is treated as a comment.

a) #

b) //

c) /* */

d) ?

Answer: #

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

a) Method Types

b) Declaration Types

c) Data Types

d) Variable Types

Answer: Data Types

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

a) Numbers

b) Strings

c) Characters

d) Commands

Answer: Strings

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

a) Commands

b) Operators

c) Numerals

d) Characters

Answer: Operators

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

Answer: Vectors

Question: Lists are created using the_______function to combine several numbers into a single list.

a) C++

b) Basic

c) c

d) ls

Answer: c

Question: Most operators in R software, like +, -, *, /, and others work equally well on single________as well as on lists.

a) Number

b) String

c) Character

d) Operand

Answer: Number

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

Answer: Operands

Question:

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

a) Numeral

b) Letter

c) String

d) Variable

Answer: Variable

Question:

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

a) ENTER

b) TAB

c) SHIFT

d) F2

Answer: ENTER

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

Answer: ENTER

Question: R command to quitting is_______

a) Quit()

b) q()

c) Exit

d) All of these

Answer: q()