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SOLVED PABSON,SEE PRE-BOARD EXAM- 2079
Subject- Optional Computer
Group "A"
1.
tnsf
k|Zgx?sf] Ps zAbdf pQ/ lbg'xf];\ .
Answer the following questions in one
sentence: [6x1=6]
a)
Search
engine eg]sf] s] xf] < What is search engine ?
Ans: A search engine is a tool
that helps users find information on the internet by searching for keywords and
returning relevant web pages.
b)
l8lh6n d'b«f eg]sf] s] xf] < What is
digital currency?
Ans: Digital
currency is a type of electronic money that is stored and exchanged using
computers and other digital devices.
c)
MS- Access sf]
kl/efiff n]Vg'xf];\ . Define MS Access.
Ans:
MS Access is a database management software created by Microsoft that
allows users to store, manage, and access large amounts of data in a simple and
organized way.
d)
Software security eg]sf] s] xf] < What is Software security?
Ans: Software
security is the protection of computer systems and applications from threats,
such as hacking, virus attacks, and unauthorized access, to ensure their
confidentiality, integrity, and availability.
e)
Cloud computing eg]sf] s]
xf] < What
is Cloud computing?
Ans: Cloud
computing is a technology that allows users to access and store data and
applications over the internet, instead of using physical computers or servers.
f)
C-programming efiffsf] s'g} b'O{
ljz]iftfx? n]Vg'xf];\ .Write any two features of C programming language?
Ans: Any two
features of c programming language are:
-
C code can run on multiple platforms with minimal modifications.
-
C uses a top-down programming approach, making code
easier to understand and debug.
2.
pko'Qm
k|fljlws zAb n]Vg'xf];\ .
Write
appropriate technical terms for the following: [2x1=2]
a)
Ps sDkgL h;n] u|fxsx?nfO{ OG6/g]6 ;]jf k|bfg
ub{5 .
A company
that provides Internet service to customers. Internet Service Provider (ISP)
b)
Ps zlQmzfnL k|f]ufd h;n] sDKo'6/sf] xf8{j]o/
pks/0fx? lgoGq0f / ;dGjo ub{5 / ;ˆ6j]o/ / cg'k|of]ux? rnfpF5 .
A powerful
program that controls and coordinates a computer’s hardware devices and runs
software and applications. Operating
System
3.
k"/f
?k n]Vg'xf];\ . Write the full form of the
following: [2x1=2]
a)
SMTP- Simple
Mail Transfer Protocol
b) POS- Point Of Sale
Group "B"
4.
tnf
lbOPsf k|Zgx?sf] 5f]6f] pQ/ n]Vg'xf];\ .
Answer the
following questions in short : [9x2=18]
a)
Switch / Router aLrsf]
leGgtf n]Vg'xf];\ . What is the
difference between Switch and Router?
|
Switch |
Router |
|
-A switch connects devices within a local area network
(LAN) and allows them to communicate with each other. -Switch is used for local communication within a LAN |
-Router connects multiple LANs to form a wide area
network (WAN) and routes data packets between them. -Router is used for communication between different
LANs or networks. |
b)
OG6/g]6sf b'O{ k|d'v k|of]ux? kl/eflift
ug'{xf];\ .
Define two
major uses of internet.
Ans: Any two
major uses of internet are:
- The internet is used for
sending and receiving emails, instant messaging, video calls, and more.
- The internet is a vast source
of information and provides access to a wealth of knowledge and data.
c)
Data sorting eg]sf] s]
xf] < s'g} b'O{ pbfx/0f n]Vg'xf];\ .
What is data
sorting. Give any two examples.
Ans: sorting
is the process of arranging data in a specific order, such as alphabetically or
numerically, for easier analysis and understanding.
Any two
examples of data sorting are:
Alphabetical
sorting: Sorting a list of names in alphabetical order, such as arranging a
phonebook by last name.
Numerical
sorting: Sorting a list of numbers in ascending or descending order, such as
arranging a list of exam scores from highest to lowest.
d)
pbfx/0fsf ;fy cgnfOg e'QmfgL kl/eflift ug'{xf];\
.
Define
online payment with example.
Ans: Online
payment refers to the process of making financial transactions through the
internet.
Eg: eSewa
Nepal, iPay, Khalti, etc.
e)
Hardware security eg]sf] s]
xf] < o;sf s'g} b'O{ ;'/Iff pkfox? n]Vg'xf];\ .
What is hardware
security ? Write any two security measures of it.
Ans: Hardware
security refers to the physical protection of computer and network devices to
prevent unauthorized access, theft, and tampering.
Any two
security measures of it are: Insurance and Regular Maintenance.
f)
Report eg]sf] s] xf] < o;sf
k|of]ux? pNn]v ug'{xf];\ .
What is
report? Mention its uses.
Ans: A
report in MS Access is a document that presents information in a clear and
organized format.
Its Uses
are:
-
A report in MS Access allows users to analyze and present
data in a clear and meaningful way, providing insights into their data.
-
A report in MS Access allows users to present data in a
professional and organized format, making it easier to communicate and share
data with others.
g)
Data Redundancy eGgfn] s]
a'em\g'x'G5 < What do you
understand by Data Redundancy?
Ans: Data
redundancy refers to the duplication of data within a database or system.
Data
redundancy can be controlled by implementing data normalization, which is a
process of organizing data in a database to minimize duplication and ensure
data consistency.
h)
sDKo'6/df Firewall eg]sf] s]
xf] < o;sf k|sf/ n]Vg'xf];\ .
What is
firewall in computer. Write its type.
Ans: A
firewall is a security system that monitors and controls incoming and outgoing
network traffic based on predetermined security rules.
Its Types
are:
- Network
Firewall: A security system placed between a private internal network and the
internet to monitor and control incoming and outgoing network traffic.
- Host-based
Firewall: A software program installed on a single computer or device to
monitor and control incoming and outgoing network traffic for that specific
device.
i)
Primary key eg]sf] s] xf] < o;sf] dxTj n]Vg'xf];\ .
What is primary key? Write its importance.
Ans: A
primary key is a unique identifier for each record in a database table.
Its
importance are:
-
It reduces and control duplication of records in a table.
-
It sets the relationship between tables.
5.
tn
lbOPsf] Program sf] Output dry run table ;lxt n]Vg'xf];\
.
Write down
the output of the given program with dry run table. [2]
DECLARE SUB NUMBER ()
CLS
CALL NUMBER
END
SUB NUMBER
N=3:C=1
WHILE C<=5
PRINT N
N=N*10+3
C=C+1
WEND
END SUB
Dry Run
|
variable |
variable |
Loop
check |
Output |
|
N |
C |
C<=5 |
|
|
3 |
1 |
1<=5
yes |
3 |
|
33 |
2 |
2<=5
yes |
33 |
|
333 |
3 |
3<=5
yes |
333 |
|
3333 |
4 |
4<=5
yes |
3333 |
|
33333 |
5 |
5<=5
yes |
33333 |
|
|
6 |
6<=5
no (loop exits) |
|
Output
3
33
333
3333
33333
6.
tn
lbOPsf] k|f]u|fdnfO{ ;RofP/ n]Vg'xf];\ . Re-write the given
program after correcting the bug. [2]
REM To
store name and age in a sequential data file STD.DOC
OPEN STD.DOC FOR OUT
AS#1
CLS
INPUT "Enter
name";N
INPUT "Enter
age";A
WRITE 1,N$,A
CLOSE #1
END
Debugged Program
REM To store name and
age in a sequential data file STD.DOC
OPEN “STD.DOC” FOR OUTPUT AS#1
CLS
INPUT”Enter name”;N$
INPUT”Enter age”;A
WRITE #1,N$,A
CLOSE #1
END
7.
tn
lbOPsf] k|f]u|fdnfO{ cWoog u/L lbOPsf k|Zgx?sf] pQ/ n]Vg'xf];\ . Study the following programs and answer the given
questions. [2x1=2]
DECLARE
SUB question (a, b, c)
CLS
x=10:
y=20 : z=15
CALL
question(x,y,z)
END
SUB
question(a,b,c)
a
= a +10
b
= b + a
c
= a + b
PRINT
a,b,c
END
SUB
a)
olb x = 1,y = 2, z = 3 ePdf o;sf] cfp6k'6 s] x'G5
< What would be its output if x=1,y=2, z=3?
Ans: The
output would be 11 13 24.
b)
k|f]u|fddf k|of]u ul/Psf jf:tljs / cf}krfl/s
Kof/fld6x? n]Vg'xf];\ . Write actual and formal parameters used in the program.
Ans: Actual
parameters- x,y,z
Formal parameters-a,b,c
Group C
8.
lgb]{zg
cg';f/ ?kfGt/ / lx;fa n]Vg'xf];\ .
Convert
/Calculate as per the instruction.
[4x1=4]
a)
(1110011010)2 =
(?)8
b)
(255)10 =
(?) 2
c)
(1001) 2 –
(111) 2 = (?) 2
d)
(111111) 2 ÷
(111) 2
9.
a. QBASIC df 3 cf]6f
gDa/ lnO{ ;jeGbf 7"nf] gDj/ function
procedure / ;jeGbf
;fgf] gDj/ sub
procedure k|of]u ul/ n]Vg'xf];.
Write a program in QBASIC to display greater number using
function procedure and smaller number using sub procedure among three numbers.
DECLARE FUNCTION GREAT(A,B,C)
DECLARE SUB SMALL(A,B,C)
CLS
INPUT"ENTER FIRST NUMBER";A
INPUT"ENTER SECOND NUMBER";B
INPUT"ENTER THIRD NUMBER";C
PRINT"THE GREATEST NUMBER IS: ";GREAT(A,B,C)
CALL SMALL(A,B,C)
END
FUNCTION GREAT(A,B,C)
IF A>B AND A>C THEN
GREAT=A
ELSEIF B>A AND B>C THEN
GREAT=B
ELSE
GREAT=C
END IF
END FUNCTION
SUB SMALL(A,B,C)
IF A<B AND A<C THEN
PRINT"THE SMALLEST NUMBER IS ";A
ELSEIF B<A AND B<C THEN
PRINT"THE SMALLEST NUMBER IS ";B
ELSE
PRINT"THE SMALLEST NUMBER IS ";C
END IF
END SUB
[4]
b. "Record.txt" elgg] qmlds 8f6f kmfOnn]
lkmN8 zLif{sdf /f]n gDa/, gfd,
lnª\u, c+u|]hL , g]kfnL , ul0ft / sDKo'6/df 8f6f e08f/0f ul/]sf] 5
. h;sf] lnË ‘F’ 5 / sDKo'6/df k|fKt u/]sf] c+s () eGbf a9L 5
eg] tL ljBfyL{x?sf ;a} hfgsf/L b]vfpg] k|f]u|fd
n]Vg'xf];\ . A sequential data file called "record.txt " has
stored data under the field heading Roll No., Name, Gender, English, Nepali ,Maths
and Computer. Write a program to display all the information of those students
whose gender is 'F' and obtained marks in computer is more than 90.
OPEN ”record.txt” FOR INPUT AS #1
CLS
WHILE NOT EOF(1)
INPUT #1,R,N$,G$,E,N,M,C
IF UCASE$(G$)=”F” AND C>90 THEN
PRINT R,N$,G$,E,N,M,C
END IF
WEND
CLOSE #1
END
10.
klxnf] 10 k|fs[lts
;+Vofx? k|bz{g ug{ C-program
n]Vg'xf];\ .
Write a program in C-language to display first 10 natural
numbers. [4]
#include<stdio.h>
int main()
{
int i;
for(i=1;i<=10;i++)
printf(“ \n %d”,i);
return 0;
}
OR
Pp6f C program n]Vg'xf];\
h;n] d"n /sd, b/ / ;do Ogk'6sf] ?kdf lnG5 / ;fwf/0f Jofh u0fgf ug]{5 . Write a ‘C’
program that takes principle, rate and time as input and it calculate the
simple interest.
#include<stdio.h>
int main()
{
float
p,t,r,i;
printf("enter
principal: ");
scanf("%f",&p);
printf("enter
time: ");
scanf("%f",&t);
printf("enter
rate: ");
scanf("%f",&r);
i=(p*t*r)/100;
printf("simple
interest is %f",i);
return 0;
}
*********
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