Grade 10 Computer Science Question Models with Solutions for SEE
.png)
Full Marks: 50
Time: 2:00 hrs
Candidates are required to give their answers according to the instructions.
Attempt all the questions.
Group 'A' (10 Marks)
1. Answer the following questions in
one sentence: [6×1=6]
a) What is data communication?
Ans: Data
communication is the process of transferring data between two or more devices
using a transmission medium such as wire or wireless.
b) What is computer virus?
Ans: A
computer virus is malicious software that replicates and infects computers,
causing harm.
c) Name two types of data file in Qbasic.
Ans: Twp data files in Qbasic are: i) Sequential
data file ii) Random access file
d) What is primary key?
Ans: A primary
key is a unique identifier for each record in a database table.
e) What is field?
Ans: A field
is an individual piece of data or attribute in a database or record, like a
name or phone number.
f) What is 'C' Language?
Ans: C
language is a high-level programming language developed in the early 1970s,
widely used for system and application development.
2. Write appropriate technical term for the
following. 2×1=2
a) A network limited toterms a room or building.
Ans: LAN
b) Commercial transactions through mobile
devices.
Ans: M-Commerce
3. Write the full form of the following:
2×1=2
a. UPS: Uninterruptible
Power Supply
b. WWW: World Wide Web
4. Answer the following questions: 9×2=18
a. What is transmission media? Write its
types.
Ans: Transmission media refers to the physical pathways that
enable communication between devices. Following are the different types
of transmission media.
i) Guided communication media. (Twisted pair cable,
coaxial cable, fiber optic cable)
ii) Un-guided communication media.
(radio waves, microwaves, Bluetooth etc.)
b. What is IoT? Write any two
importance of it.
Ans: IoT, or Internet of Things, is a network of interconnected
devices that collect and share data over the internet.
Following are the two importance of
IoT:
i. Enhances everyday life with smart homes, healthcare
monitoring, and personalized services, contributing to convenience and
well-being.
ii. Enables real-time monitoring and control of devices and
systems from remote locations, improving convenience and safety.
c. Write any four opportunities and
threats in social media.
Ans: Opportunities of social media:
i. Build relationships, connect with like-minded people, and
foster a sense of belonging.
ii. Reach a large audience, promote your
business or ideas, and engage with customers.
iii. Share your creativity, learn new things,
and discover diverse perspectives.
iv. Mobilize people for a cause, raise
awareness, and effect positive change.
Threats of social media:
i. Encountering false information that can be
misleading or harmful.
ii. Sharing personal information online can
lead to privacy breaches or stalking.
iii. Excessive use can lead to social
isolation, anxiety, and depression.
iv. Facing online abuse or negativity
that can impact mental well-being.
d. What is E-commerce? Write its
types.
Ans:
E-commerce refers to buying and selling goods or services using the Internet.
Types
of e-commerce include:
i)
B2C (Business-to-Consumer)
ii)
B2B (Business-to-Business)
iii)
C2C (Consumer-to-Consumer)
iv)
C2B (Consumer-to-Business)
e.
What is information security? Write any two ways to protect data.
Ans:
Information security is the practice of protecting electronic data from
unauthorized access, use, disclosure, disruption, modification, or destruction.
Two
ways to protect data include:
i)
Use complex passwords and update them regularly.
ii)
Keep software and systems updated to protect against vulnerabilities.
f. What is database? Write any two
examples.
Ans: A database is a well-organized
collection of data that is easy to access and manage.
Following are the four examples of
DBMS:
i. MS-Access
ii. Oracal
g. What is table? Write the
basic components of table.
Ans: Table is the object of
database that stores data in rows and columns.
Following are the basic
components of table:
i) Field
ii) Records
iii) Data types
iv) primary key
h) What is action query?
Write its type.
Ans: An action query in a database is a type of
query designed to perform operations that modify or manipulate the data in the
database.
Following are the types of
action query:
i) Delete query
ii) Append query
iii) Update query
iv) Make-table query
i) Define input mask and
validation rule.
Ans: Input mask: An input mask is a template that specifies the format in
which data must be entered into a database field.
Validation rule: A validation rule
is a criterion that limits the type or range of data that can be entered into a
database table's fields.
5. Write the output of the given
program. Show with dry run in table. 2
DECLARE SUB series ()
CLS
CALL series
END
SUB series
a=4
b=5
PRINT a
PRINT b
FOR i= 1 to 5
c=a+b
PRINT c
a=b
b=c
NEXT i
END SUB
|
Var. a |
Var b |
Print a,b |
Loop check? |
Var c |
Print c |
|
4 |
5 |
4
5 |
1 to 5? Yes |
C=4+5=9 |
9 |
|
5 |
9 |
|
2 to 5? Yes |
C=5+9=14 |
14 |
|
9 |
14 |
|
3 to 5? Yes |
C=9+14=23 |
23 |
|
14 |
23 |
|
4 to 5? Yes |
C=14+23=37 |
37 |
|
23 |
37 |
|
5 to 5? yes |
C=23+37=60 |
60 |
|
37 |
60 |
|
6 to 5? No Exit from loop |
|
|
The final output:
4
5
9
14
23
37
60
6. Re-write the given program after
correcting the bug: 2
REM add some more records on a
sequential data file "emp.dat"
CLS
OPEN "emp.dat" for INPUT
AS #1
UP:
INPUT "Enter name";n$
INPUT "Enter
Department";d$
INPUT "Enter post";p$
INPUT "Enter salary";sl
WRITE #2, n$,d$,p$,sl
INPUT "Do you want to add more
records? (Y/N)"ans
IF UCASE$(ans$)="Y" THEN
GOTO UP
CLOSE
END
Debugged program:
REM add some more records on a
sequential data file "emp.dat"
CLS
OPEN "emp.dat" for APPEND
AS #1
UP:
INPUT "Enter name";n$
INPUT "Enter
Department";d$
INPUT "Enter post";p$
INPUT "Enter salary";sl
WRITE #1, n$,d$,p$,sl
INPUT "Do you want to add more
records? (Y/N)"ans$
IF UCASE$(ans$)="Y" THEN
GOTO UP
CLOSE #1
END
7. Study the following program and
answer the given questions: 2×1=2
DECLARE FUNCTION test$ (a$)
CLS
a$="KATHMANDU"
b$=test$(a$)
PRINT b$
END
FUNCTION test$(a$)
FOR i= 1 TO LEN(a$)
d$=MID$(a$,I,1)
IF I MOD 2= 0 HEN
c$=c$+UCASE$(d$)
ELSE
c$=c$+LCASE$(d$)
ENDIF
test$=c$
END FUNCTION
a. What is the name of function
procedure?
Ans: test$
b. List the different library
function used in the program.
Ans:
LEN, MID$, LCASE$, UCASE$
8. Convert/Calculate as per the
instructions: 4×1=4
i) (511)10 into binary ii) (756)10 into
Hexadecimal number
iii) 1001×101-11 iv) 1001001÷11001
9.a) Write a program in Qbasic that ask the radius and
height of a cylinder then calculate its volume and total surface area. Create a
user define function VLM(r,h) to calculate volume and sub procedure TOTSA(r,h)
to calculate total surface area of a hemisphere. [Hints: TSA=2Ï€r(r+h), V=Ï€r2h] 4
Ans:
DECLARE FUNCTION vlm (r, h)
DECLARE SUB tosta (r, h)
CLS
INPUT "Enter radius and
height"; r, h
PRINT "Volume: ";vlm(r, h)
CALL tosta(r, h)
END
SUB tosta (r, h)
v = 22 / 7 * r * r * h
PRINT " Surface area of
a hemisphere";v
END SUB
FUNCTION vlm (r, h)
tsa = 2 * 22 / 7 * r * (r +
h)
vlm = tsa
END FUNCTION
b) A sequential data file
called "marks.dat" has stored data under the field heading students
name, Eng, Nep, and Math. Write a program to display all the records whose
marks is greater than 35 in all subjects. 4
Ans:
CLS
OPEN "marks.dat"
FOR INPUT AS #1
DO WHILE NOT EOF(1)
INPUT #1, name$,eng,math,nep
IF eng>=35 AND
math>=35 AND nep>=35 THEN PRINT name$,eng,math,nep
LOOP
CLOSE #1
END
#include <stdio.h>
int main()
{
int number;
printf("Enter a number: ");
scanf("%d", &number);
if(number %2==0)
printf("even number");
else
printf("odd number");
return 0;
}
OR
Write a C program to display
the sum of the first 20 even numbers. 4
#include<stdio.h>
int main()
{
int x,a=2;
for(x=1;x<=20;x++)
{
printf("%d\t",a);
a=a+2;
}
return 0;
}
You may also read:
SEE Computer Science solved practice question model
.png)
.png)
.png)
%202080%20(2024)%20Optional%20II%20Computer%20Science%20Solution.png)
No comments:
Post a Comment