DLE
2073
Subject:
Computer Science
Group
A
Computer
Fundamental [25 Marks]
1. Answer the following questions:
[10]
a)
What is computer software?
Ans: Computer software
is an organized collection of programs written for a computer to perform a
particular task.
b)
What is cyber law?
Ans:
The rules and regulations related to internet or cyber space is known as cyber
law.
c)
List any two symptoms of computer virus.
Ans:
Any two symptoms of computer virus are:
i) Frequently display unnecessary error messages
or images.
ii) Changes the size of disk and files.
d)
Write any two advantage of computer network.
Ans:
The two advantages of computer network are:
i) It makes communication easy and fast
between different users.
ii) It allows sharing same software among
different users at the same time.
e)
Write any two importance of multimedia in education.
Ans:
The two importance of multimedia in education are:
i) It makes easy to share views, ideas and thoughts among students.
ii) It makes presentation of related
subject matter attractive.
2. Choose the best answer: [2]
a) ________ is a type
of software that manages and controls the overall operation of computer.
i) Word Processing ii) Operating system iii) Excel iv) Virus
Ans: Operating System
b)
________ should be used to avoid accessing by unauthorized users.
i)
Password ii) UPS iii)
Antivirus iv) None of these
Ans:
Password
c)
The computer which contains __________ is called microprocessor.
i)
biochip ii)
microprocessor iii)
vacuum tube iv) All of this
Ans:
microprocessor
d)
When a computer is turned off, the contents of RAM get ________.
i)
saved ii)
printed iii) erased iv) both (i) and (ii)
Ans:
earsed
3. State true or false. [2]
a)
Charles Babbage is considered as the father of computer science.
Ans:
True
b)
MS Word is a word processing software.
Ans:
True
c)
ICT is not used in e-banking.
Ans:
False
d)
A hub provides physical connection between all computers.
Ans:
True
4. Write appropriate technical term
for the following: [2]
a)
The calculating device developed by William Oughtred.
Ans:
Slide Rule
b)
Selling of goods and services online.
Ans:
E-Commerce
c)
The artificial environment created by the computer to entertain user.
Ans:
Virtual Reality
d)
A main computer in the computer network.
Ans:
Server
5. Match the following: [2]
Group A Group B
a)
Making Correction -
Electronic Spreadsheet
b)
To add cells -
Document Security
c)
EXCEL -
SUM ( )
d)
Password -
Editing
-
Formatting
Answer:
Group
A Group B
a)
Making Correction - Editing
b)
To add cells -
Formatting
c)
EXCEL -
Electronic Spreadsheet
d)
Password -
Document Security
6. Write the full forms of the
following: [2]
a)
HTML
Ans:
Hyper Text Markup Language
b)
UPS
Ans:
Uninterruptible Power Supply
c)
WAN
Ans:
Wide Area Network
d)
CPU
Ans:
Central Processing Network
7. Convert the following numbers as
indicated: [2]
a)
(1011)2 into Decimal
Soln:
=1×23
+ 0×22 + 1×21 + 1×20
=1×8
+ 0 + 1×2 + 1×1
=8
+ 0 + 2 + 1
=11
Ans:
(1011)2 = (11)10
b)
(125)10 into Binary
|
2
|
125
|
R
|
|
2
|
62
|
1
|
|
2
|
31
|
0
|
|
2
|
15
|
1
|
|
2
|
7
|
1
|
|
2
|
3
|
1
|
|
2
|
1
|
1
|
|
2
|
0
|
1
|
Ans:
(125)10 = (1111101)2
8. Perform the following binary
operations: [2]
a)
(1001)2 + (1011)2
Soln:
|
|
1
|
0
|
0
|
1
|
|
+
|
1
|
0
|
1
|
1
|
|
|
1
|
1
|
0
|
0
|
Ans:
(1001)2 + (1011)2 = (1100)2
b)
(1100)2 × (11)2
Soln:
|
|
|
1
|
1
|
0
|
0
|
|
|
|
|
×
|
1
|
1
|
|
|
|
1
|
1
|
0
|
0
|
|
|
1
|
1
|
0
|
0
|
×
|
|
1
|
0
|
0
|
1
|
0
|
0
|
Ans:
(1100)2 × (11)2 = (100100)2
Group
B
HTML
[10 Marks]
9. Answer the following questions:
[4]
a)
What is HTML? Who invented ?
Ans: HTML is a
hypertext markup language which is used to create web pages for presenting
information on the internet. Tim Berners Lee invented it.
b)
Define web browser with any two examples.
Ans: The web browser is
a software which helps to view the web pages. Any two examples of web browsers
are Google Chrome and Internet Explorer.
10. Select the correct answer: [3]
a)
_____ tag is used to make a text bold.
i)
<OL> ii) <B> iii) <DL> iv) None of these
Ans:
<B>
b)
Which format of image files can be inserted in HTML?
i)
.DOC ii) .GIF iii) .PSD iv) All of these
Ans:
.GIF
c)
_____ tag is used to break the line.
i)
<OL> ii) <BR> iii) <BL> iv) None of these
Ans:
<BR>
d)
_____ is a software that is used to see the information in the web.
i)
Browser ii) Tag iii) MS Word iv) All of these
Ans:
Browser
e)
The extension of HTML document is _____.
i)
.html ii) .doc iii) .exe iv) .ppt
Ans:
.html
f)
Which attribute can be used with BODY tag to set background colour green?
i)
<background=”green”> ii)
<bgcolor=”green”> iii)
<vlink=”green”>
iv)
None of these
Ans:
<bgcolor=”green”>
11. Write the HTML tag for the
following: [3]
a)
School Name [use Heading tag]
Ans:
<H1> Jagat Mandir Secondary School </H1>
b)
Insert horizontal line
Ans:
<HR>
c)
Insert image of your school
Ans:
<IMG SRC=”jagat.jpg”>
d)
Scroll your name
Ans:
<MARQUEE> RAM PRASAD SHRESTHA </MARQUEE>
e)
Link your page with http://deokathmandu.gov.np
Ans: <A Href=”http://deokathmandu.gov.np”> Click
Here to visit DEO KATHMANDU Website </A>
f)
Write H20 [use subscript tag]
Ans:
H <SUB> 2 </SUB> O
Group
C
QBasic
[15 Marks]
12. Answer the following questions:
[3]
a) What is variable?
Ans: The data item
whose value changes during the execution of a program is called variable.
b) Define flowchart.
Ans: The pictorial
representation of getting a solution of a problem is called flowchart.
13.
Identify the error in the following program and correct it. [2]
REM
To Accept two numbers and find their sum
CLI
PRINT
“Enter 1st number”; num1
INPUT
“Enter 2nd number”; num2
PRINT
SUM = num1 + num2
PRINT
“Sum”
END
Debugged Program
CLS
INPUT
“Enter 1st number”; num1
INPUT
“Enter 2nd number”; num2
SUM = num1 + num2
PRINT
SUM
END
14.
Find the output of the following program: [2]
CLS
LET
R = 10
LET
AREA = 3.14 * R ^ 2
PRINT
“The area of circle is:”; AREA
END
Output
The
area of circle is: 314
15.
Read the following program and answer the following questions: [2]
CLS
LET
L = 10
LET
B = 6
LET
H = 2
LET
Volume = L*B*H
PRINT
“Volume=”;Volume
END
a)
Write the variables used in the above program.
Ans:
The variables used in the above program are L, B, H and Volume
b)
What is the output of the above program?
Ans:
The output of the above program is:
Volume
= 120
16.
Write QBasic program for the following: [6]
a) To accept three
different numbers and print the average of numbers.
CLS
INPUT
“Enter first number”; A
INPUT
“Enter second number”; B
INPUT
“Enter third number”; C
AVE=(A+B+C)/3
PRINT
“Average of three numbers”; AVE
END
b) To find the area of
rectangle. [A = L × B]
CLS
INPUT
“Enter Length”; L
INPUT
“Enter Breadth”; B
A
= L * B
PRINT
“Area of rectangle”; A
END
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