SEE COMPUTER SCIENCE 2080
ADVANTAGES AND DISADVANTAGES OF
SEE COMPUTER SCIENCE 2080
SEE COMPUTER SCIENCE 2080
Difference Between [Networking and Telecommunications] 1. Simplex Vs Full Duplex Mode 2. Simplex Vs Half Duplex Mode 3. Guided Vs Unguided Media 4. STP Vs UTP 5. Radio Wave VS Microwave 6. Hub Vs Switch 7. Switch Vs Router 8. LAN Vs MAN 9. LAN Vs WAN 10. Client Server Vs Peer to Peer Network Prepared By: Deepak Shrestha
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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 an
online tool that helps us to stay connected with the whole world
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: Computer network
is a group of two or more computers and devices connected to each other through
wired or wireless media to exchange data and information and share hardware,
software and other resources.
Any two
advantages of computer network are:
1. A
network connected computers can share hardware devices such as
scanner, printer,
hard disk, etc.
2.
Networking also provides the facility of data and software backup system.
b) Define
software security. Write any two protection measures for it.
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.
Any two protection measures for software security are:
1. Backup
2. Password
c) What is
search engine? Write any two popular search engines.
Ans: Search engine is
the communication program that searches documents on the basis of specified
keywords and returns a list of the web links that matches the keywords.
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: E-Commerce refers
to electronic transactions such as buying, selling and exchanging of goods,
services and information over computer communication network such as the
Internet.
Any two
benefits of e-commerce are:
1. Faster buying/selling procedure, as well as easy to
find products.
2. There are no geographical limitations, can deliver
service globally.
e) Write
ant two advantages and disadvantages of social media.
Ans: Any two advantages of social media are:
1. It creates awareness and innovate the way people live
2. Social media let us share anything with others around
the world
Any two
disadvantages of social media are:
1. Personal data and privacy can be easily hacked and
shared on the internet.
2. More chances of creating fake accounts.
f) What is
DBMS? Write any two advantages of it.
Ans: Database
management system (DBMS) is a computerized system that stores data, processes
them and provides information in an organized form.
Any two
advantages of DBMS are:
1. Large volume of data can be stored and updated easily.
2. Provides data integrity and security.
g) What is
primary key? Write any two features of it.
Ans: Primary
Key is a special field or group of fields in the table that uniquely identifies
each record from the database.
Any two
features of primary key are:
1. To reduce and control duplication of the record in a
table.
2. To set the relationship between tables.
h) Define
field and record.
Ans: A field is a column in a table
which contains information about a certain type for all records. Field is a
smallest unit of information. A record is a row in a table which contains
information about single items in a database. Record is complete set of
information.
i) Define
form. Write any two uses of it.
Ans: Form is one of the
MS-Access database objects that is primarily used to create an interface for
entering data in a table or multiple linked tables.
Any two uses of form are:
1. Form displays complete record one at a time, so we can
view and modify records using the form.
2. Forms provides
GUI (Graphical Users Interface) using which users interact with
MS-Access database.
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
|
A |
J=1 TO 5 |
PRINT A; |
A=A+3 |
|
2 |
1 to 5 Yes |
2 |
2+3=5 |
|
5 |
2 to 5 Yes |
5 |
5+3=8 |
|
8 |
3 to 5 Yes |
8 |
8+3=11 |
|
11 |
4 to 5 Yes |
11 |
11+3=14 |
|
14 |
5 to 5 Yes |
14 |
14+3=17 |
|
17 |
6 to 5 No (loop
exits) |
|
|
The output
of the program is
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
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;
}
***
