SEE
2078
Solved
Computer Science
1.
Answer the following questions in one sentence: 6x1=6
a)
Write the name of any two search engines.
Ans:
The name of any two search engines is google.com and ask.com
b)
What is social media?
Ans:
Social media is computer-based technology that facilitates the sharing of
ideas, thoughts, and information through the building of virtual networks and
communities.
c)
Which data type is suitable to store photographs of students in MS-Access?
Ans:
The suitable data type to store photographs of students in MS-Access is OLE object.
d)
Which view is used to modify a table structure in MS-Access?
Ans:
Design View is used to modify a table structure in MS-Access.
e)
Which statement is used to call sub-procedure?
Ans:
CALL statement is used to call sub-procedure.
f)
Write any two data types used in C language.
Ans:
Any two data types used in C language are int and char.
2.
Write appropriate technical term for the following. 2x1=2
a)
A system of copying data and information reading in computer into another location.
Backup
b)
A company which provides services of Internet. Internet Service Provider (ISP)
3.
Write the full form of the following. 2x1=2
a)
FTP: File Transfer Protocol
b)
MAN: Metropolitan Area Network
4.
Answer the following questions. 9x2=18
a)
What is computer network? Write any two advantages of it.
Ans:
A computer network means two or more computers connected with each other to
share data, hardware, software and other resources.
Any
two advantages of computer network are:
· Computer in a network can access the network-connected hardware devices like printers, disk drives, etc.
· Computers in a network system share different software packages.
b)
Define software security. Write any two protection measures for it.
Ans:
The security given to the software and data from being lost or damaged due to
accidental or intentional harm is called software security.
Any
two protection measures for software security are:
· Backup
· Password
c)
What is search engine? Write any two popular search engines.
Ans: A search engine is a Website that lets you search the Internet
for Websites on specific topics.
The
name of any two popular search engines is google.com and ask.com
d)
Define e-commerce. Write any two benefits of it.
Ans:
Ecommerce, also known as electronic commerce or internet commerce, refers to the
buying and selling of goods or services using the internet.
Any
two benefits of e-commerce are:
· It
makes buying/selling possible 24/7.
· It
makes buying selling procedure faster, as well as easy to find products.
e)
Write ant two advantages and disadvantages of social media.
Ans:
Any two advantages of social media are:
· People
from anywhere can connect with anyone. Regardless of the location and religion.
· Millions
of people are using social media platforms so it has a great opportunity to
promote business.
Any
two disadvantages of social media are:
· Personal
data and privacy can be easily hacked and shared on the internet.
· More
chances of spreading unnecessary rumour soon.
f)
What is DBMS? Write any two advantages of it.
Ans:
DBMS is a software which helps to extract, view and manipulate data in an
organized way.
Any
two advantages of DBMS are:
· It
controls data redundancy which means duplication of data.
· Large
volume of data can be stored and updated easily.
g)
What is primary key? Write any two features of it.
Ans:
A key that uniquely identifies each record in a database is primary key.
Any
two features of primary key are:
· To
reduce and control duplication of record in a table.
· To
set the relationship between tables.
h)
Define field and record.
Ans:
A column in a table is called field, and it contains a specific piece of
information within a record. Record is a
collection of multiple related fields in a row which gives complete information
about a person or thing.
i)
Define form. Write any two uses of it.
Ans:
Form is an object of Ms-Access which
provides graphical interface to enter data into the tables or multiple linked
tables.
Any two uses of form are:
· It provides an interactive platform
for input of data into the database.
· It helps to display data in more
presentable form than a datasheet.
5. Write the output of the given
program: (Workout with a dry run). 2
DECLARE SUB ABC(A)
CLS
A=2
CALL ABC(A)
END
SUB ABC(A)
FOR J= 1 TO 5
PRINT A;
A=A+3;
NEXT J
END SUB
Dry run
|
Variable |
Variable |
|
Output |
|
A |
J |
Loop Check |
|
|
2 |
1 |
1 to 5 Yes |
2
5 8 11
14 |
|
5 |
2 |
2 to 5 Yes |
|
|
8 |
3 |
3 to 5 Yes |
|
|
11 |
4 |
4 to 5 Yes |
|
|
14 |
5 |
5 to 5 Yes |
|
|
17 |
6 |
6 to 5 No (loop exits) |
|
Output
2
5 8 11 14
6. Re-write the given program after
correcting the bugs: 2
DECLARE SUB Series ( )
CLS
EXECUTE Series
END
SUB Series( )
REM Program to generate 1 1 2 3 5
.....upto the 20th terms
A=1
B=1
FOR ctr=10 to 1
DISPLAY A:B:
A=A+B
B=A+B
NEXT ctr
END Series ( )
Debugged Program
DECLARE SUB Series ( )
CLS
CALL Series
END
SUB Series( )
REM Program to generate 1 1 2 3 5
.....upto the 20th terms
A=1
B=1
FOR ctr=1 TO 10
PRINT A; B;
A=A+B
B=A+B
NEXT ctr
END SUB
7. Study the following program and
answer the given questions. 2x1=2
DECLARE FUNCTION TEST(X)
X=100
Z=TEST(X)
PRINT Z
END
FUNCTION TEST(X)
FOR R=1 TO X
S=S+I
NEXT R
TEST=S
END FUNCTION
a) How many parameters are used in
the above program?
Ans: The parameters are used in the
above program is one.
b) How many times does the statement
S=S+I execute in the above program?
The statement S=S+I will execute 100
times in the above program
8. Convert / Calculate as per the
instruction. 4x1=4
i) (11111101)2 = (?)16
Soln:
|
Paired
Binary Digit |
1111 |
1101 |
|
Binary Equivalent value |
F |
D |
\ (11111101)2 = (FD)16
ii) (245)10 = (?)2
Soln:
|
2 |
245 |
Remainder |
|
2 |
122 |
1 |
|
2 |
61 |
0 |
|
2 |
30 |
1 |
|
2 |
15 |
0 |
|
2 |
7 |
1 |
|
2 |
3 |
1 |
|
2 |
1 |
1 |
|
|
0 |
1 |
\ (245)10 = (11110101)2
iii) (1010) 2 x (101)
2 =(?)2
|
|
|
1 |
0 |
1 |
0 |
|
|
|
x |
1 |
0 |
1 |
|
|
|
1 |
0 |
1 |
0 |
|
|
0 |
0 |
0 |
0 |
x |
|
1 |
0 |
1 |
0 |
x |
x |
|
1 |
1 |
0 |
0 |
1 |
0 |
\ (1010) 2 x (101) 2
=(110010)2
iv) (101110) 2 ¸
(110) 2
|
110) |
101110( |
0111 |
|
|
000 |
|
|
|
1011 |
|
|
|
-110 |
|
|
|
1011 |
|
|
|
-110 |
|
|
|
1010 |
|
|
|
-110 |
|
|
|
100 |
|
\
Quotient = 111
Remainder = 100
9 a) Write a program in QBASIC that
asks length, breadth of a room and calculate its area and perimeter. Create a
user defined function to calculate area and sub program to calculate perimeter.
[Hint: [Area=LxB], [p=2(L+B]]
DECLARE FUNCTION AREA (L,B)
DECLARE SUB PER(L,B)
CLS
INPUT “Enter Length”; L
INPUT “Enter Breadth”; B
PRINT “Area of rectangle=”;
AREA(L,B)
CALL PER(L,B)
END
FUNCTION AREA(L,B)
AREA = L*B
END FUNCTION
SUB PER(L,B)
P=2*(L+B)
PRINT “Perimeter of rectangle=”; P
END SUB
b) Write a program to create a
sequential data file “salary.dat” to store programmer’s name, salary and post
according to the need of the user.
OPEN “salary.dat” FOR OUTPUT AS #1
DO
CLS
INPUT “Enter name”; N$
INPUT “Enter Salary”; S
INPUT “Enter Post”; P$
WRITE #1, N$, S, P$
INPUT “Do you want to continue(Y/N)”;
CH$
LOOP WHILE UCASE$(CH$)=”Y”
CLOSE #1
END
10.
Write a C program that asks a number and check whether it is negative,
positive or zero.
#include<stdio.h>
#include<conio.h>
int
main()
{
int
n;
printf("Enter
any number: ");
scanf("%d",
&n);
if(n>0)
printf("%d
is positive number",n);
else
if(n<0)
printf("%d
is negative number",n);
else
printf("%d
is zero number",n);
return
0;
}
OR
Write a program in C language to
display first 10 odd numbers.
#include<stdio.h>
#include<conio.h>
int
main()
{
int
i, a;
i=1;
a=1;
while(i<=10)
{
printf("%d \n", a);
a=a+2;
i++;
}
return
0;
}
