| 1) What is the first mechanical calculating device of the world?
Answer:- Abacus Q2) Who is Know as the world's First Programmer? Answer :- Lady Ada Q3) Which computer device is also known as 'Type Writer'? Answer :- Keyboard Q4) Who is known as the Father of Computer? Answer :- Charles Babbage Q5) What does CRT stands for in Computer? Answer :- Cathode Ray Tube Q6) Which Computer Device convert Soft Copy Output to Hard Copy Output? Answer :- Printer Q8) Which company developed first wireless mouse? Answer :- Logitech Q9) Which Computer Device is also called Hand Held Pointing Device? Answer :- Mouse 10) Computer Display Screen Output is called ______. Answer :- Soft Copy Output Q11) Which Computer Device convert Hard Copy Output to Soft Copy Output? Answer :- Scanner 12) Which Computer Device used to play game? Answer :- Joystick 13) What does GUI stands for? Answer :- Graphical User Interface 14) What is the name of first topmost display screen of computer which contains icons? Answer :- Desktop 15) What is the name of thin strip lies at the bottom of the desktop? Answer :- Taskbar 16) Which shortcut key is used to get help in reference to active screen? Answer :- F1 17) Which shortcut key is used to rename selected files or folder? Answer :- F2 |
Saturday, July 26, 2025
Computer Objective Questions || Practice Set || Shishu Varg || Class 4 & 5
Saturday, February 22, 2025
Computer Terminology Full Form. || IT & Computer Concept!
Computer Terminology Full Form || IT & Computer Skills!
1) TCP/IP - Transmission Control Protocol/ Internet Protocol.
2) HTTPs - Hyper Text Transfer Protocol.
3) ICT - Information Comunication Technology.
4) ITeS - Information Technology Enabled Services.
5) CPU - Central Processing Unit.
6) TLD - Top Level Domain.
7) DNS - Domain Name System.
8) WWW - World Wide Web.
9) URL - Uniform Resource Locator.
10) FQDN - Frequently Qualified Domain Name.
11) HTML - Hyper Text Markup Language.
12) ALU - Arithmetic Logic Unit.
13) SMPS - Switch Mode Power Supply
14) BIOS - Basic Input Output System.
15) RAM - Random Access Memory.
16) ROM - Read Only Memory.
17) POST - Power On Self Test.
18) MOS - Metal Oxides Semiconductor.
19) CD - ROM - Compact Disc Read Only Memory.
20) DVD - Digital Videos Disc.
21) PCI - Peripheral Component Interconnect.
22) ISA - Industry Standards Architecture.
23) AGP - Accelerated Graphics Port.
24) CRT - Cathode Ray Tube.
25) LCD - Liquid Crystals Display.
26) LED - Light Emitted Diode.
27) NIC - Network Interface Card.
28) VGA - Videos Graphics Arrays.
29) HDMI - High Definition Multimedia Interface.
30) DVI - Digital Video Interface.
31) USB - Universal Serial Bus.
32) PC - Personal Computer.
33) DBMS - Data Base Management System.
34) DTP - Desktop Publishing.
35) CAD - Computer Aided Design.
36) CASE - Computer Aided Software Engineering.
37) DOS - Disk Operating System.
38) GUI - Graphics User Interface.
39) CUI - Character User Interface.
40) BOSS - Bharat Operating System Solutions.
41) DPI - Dots Per Inch
42) OMR - Optical Mark Reader.
43) OCR - Optical Character Reader.
44) BCR - Bar Code Reader.
45) MICR - Magnetical Ink Character Reader.
46) QR - Quick Response
47) e-Mail - Electronic Mail.
48) POP - Post Office Protocol.
49) BCC - Blink Carbon Copy.
50) SMTP - Simple Mail Transfer Protocol.
Monday, February 17, 2025
Monday, February 12, 2024
CMS - 2024 || JAC INTERMEDIATE EXAMINATION - 2024 || 12th COMPUTER SCIENCE!
Part-A
Multiple Choice Questions
1) Who is the developer C++?
a) Von Neumann
b) Dennis M. Ritchie
c) Charles Babbage
d) Bjarne Stroustrup
Answer:- d) Bjarne Stroustrup
2) The smallest individual unit in a program is called _____.
a) Token
b) Language
c) Data
d) None of these
Answer:- a) Token
3) String Terminator character is _____.
a) '\t'
b) '\v'
c) '\o'
d) None of these
Answer:- d) None of these || '\0' Null Character
4) In C++ cin, cout, cerr are predefined stream ____.
a) Operator
b) Function
c) Object
d) None of these
Answer:- c) Object
5) Relational operators are ____.
a) +, -, *, /
b) &&, ||, !
c) ?, :
d) <, >, <=, >=, ==, !=
Answer:- d) <, >, <=, >=, ==, !=
6) Evaluate of x=++y*5 if y=10 is ___.
a) 50
b) 55
c) 10
d) None of these
Answer:- b) 55
7) do-while loop checks condition on _____.
a) Top
b) left
c) bottom
d) None of these
Answer:- c) bottom
8) Wrapping up of data and functions in to a single unit is called _____.
a) Inheritance
b) Polymorphism
c) Encapsulation
d) None of these
Answer:- c) Encapsulation
9) Which of the following correctly declares an object of a class?
a) Class student;
b) Student ob;
c) Student S[ ]
d) None of these
Answer:- b) Student ob;
10) Static member function is invoked by using the _____.
a) Class name
b) Object name
c) Dot operator
d) None of these
Answer:- a) Class name
11) An inline function is ____.
a) declared and defined inside the class
b) prefix with keyword inline
c) called at compile time
d) None of these
Answer:- b) Prefix with keyword inline
12) Function overloading implements the _____ concept of OOPs.
a) Polymorphism
b) Inheritance
c) Abstraction
d) None of these
Answer:- a) Polymorphism
13) In public Inheritance, a public data member of the base class will be treated in a derived class as ___.
a) Public
b) Private
c) Protected
d) None of these
Answer:- a) Public
14) The chain depicting the derivation of a class from multiple base classes is called __.
a) Containership
b) Inheritance graph
c) Inheritance path
d) None of these
Answer:- c) Inheritance path
15) The allocation of memory at run time is referred to as _____.
a) Static Memory Allocation
b) Dynamic Memory Allocation
c) Computer Memory Allocation
d) None of these
Answer:- b) Dynamic Memory Allocation
16) A pointer variable declaration is done as ___.
a) data type *variable;
b) *data type variable;
c) data type variable*;
d) none of these
Answer:- a) data type *variable;
17) Elements that can be added or removed at both ends are called
a) Straight queue
b) Deque
c) Circular queue
d) None of these
Answer:- b) Deque
18) Which header file is required for creating and manipulating data files in C++?
a) string.h
b) math.h
c) fstream.h
d) None of these
Answer:- a) fstream.h
19) Number of tuples in a relation is called
a) Degree
b) Cardinality
c) Attributes
d) None of these
Answer:- b) Cardinality
20) Set of possible values that an attribute can have, is called
a) Tuple
b) Domain
c) Column
d) None of these
Answer:- b) Domain
21) Which of the following is not a data manipulation language command?
a) INSERT
b) DELETE
c) UPDATE
d) COMMIT
Answer:- d) Commit
22) The dual of the Boolean expression AB + A'B + 1 is
a) (A + B) (A' + B) + O
b) (A + B) (A' + B) . O
c)
d) None of these
23) Maxterm designation of X' + Y + Z + W' is
a) M9
b) m9
c) m4
d) None of these
24) A location on a net server is called a
a) Web Browser
b) Telnet
c) Website
d) None of these
Answer:- c) Website
25) The data transmission rate is measured in ____.
a) Metre
b) Baud
c) Amplitude
d) None of these
Answer:- b) Baud
26) Define Literal.
27) What will be the size of the following constants?
a) "U\a"
b) "JAC-2024"
28) What data types should you use to represent the following items?
a) The average marks in the class.
b) The number of employees in an organisation.
29) What is structure?
30) Evaluate the following expressions:
a) F = a + b / a where a = 5, b = 3
b) F = (a++) * d + 4 where a = 10, d = 5
31) What do you mean by Abstraction?
32) Write any two advantages of e-mail.
33) Define Encapsulation.
34) Expand the following:-
a) SIM - Single Inline Module
b) HTTP - Hyper text transfer protocol
35) Define Polymorphism. Give an example to show it's implementation in C++.
36) What is the advantage and disadvantage of inline function?
37) What are the advantage offered by inheritance?
38) What is Constructor? Explain with example.
39) Evaluate the post fix expression using stack and show the contents of stack after execution of each operation:
120, 45, 20, +, 25, 15, -, +, *
40) What is a relation? What is the difference between tuple and an attribute?
41) Draw a logic circuit diagram for the following expression:
Y = AB + B'C + C'A'
42) What are the various levels of data abstraction in a database system? Explain.
Monday, November 6, 2023
Word Processor Edit Menu Shortcut Keys Concepts
https://youtu.be/5pHePR3-Sxw
https://youtu.be/5pHePR3-Sxw?si=2IoH-qPFsB9VwoGHThursday, October 12, 2023
Class - 9 || Chapter - 4 || IT & Computer || Spreadsheet Exercise Solutions!
A) Fill in the blanks:-
a) A 'Calc' worksheet contains 1024 columns and 65536 rows.
b) Text Orientation helps to rotate direction of contents in a cell.
c) Series of numbers can be filled using Autofill feature.
d) F2 button is used to enter or edit formula in calc.
e) The extension of Calc file is .ods which automatically gets attached with the file name.
B) Select the correct answers:-
1) Address of the current cell/active cell is contained in:
Answer:- Name Box
2) The option that reduces the font size of the data to accomodate it within the column width:
Answer:- Shrink to fit cell size
3) Calc provide a feature where predefined series of name or text are defined. This feature is know as:
Answer:- Autofill
4) Button that is used to calculate the sum of specified range of cells is known as :
Answer:- AutoSum
5) This option accommodates the text automatically within the column width by increasing the row height.
Answer:- Wrap Text
C) Difference between the following:-
1) Autofill and Custom List
Answer:- Autofill feature in spreadsheet package is predefined series of data such as months name of year, days name of week, series number etc.
Custom list feature create a custom list where some series of names or text that can be pre defined and then it can be displayed when the initial data is entered and auto fill is applied.
2) Undo and Redo
Answer:- Undo helps the user to reverse the series of actions and Redo helps to reverse the actions that have been executed by Undo action.
Ctrl+ Z is short cut for Undo and Ctrl + Y is short cut for Redo.
3) Wrap Text and Shrink to Fit
Answer:- Wrap Text option wraps the text in multiple line to accomodate the text automatically within the column by increasing the row height.
Shrink to fit option reduces the font size of the contents to accomodate it within column width.
Sunday, October 1, 2023
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