Computer
Science
SEE Model Question
Time:
1 hr 30 min
F.M.
: 50
Group
‘A’ (10 Marks)
1.
Answer
the following questions in one sentence. [6×1=6]
a.
What
is search engine?
A search engine is a software program or
script available through the Internet that searches documents and files for
keywords and returns the results of any files containing those keywords.
b.
What
is the business done through internet?
The business done through internet is
e-commerce.
c.
Which
data type is used to store alpha numeric characters or special symbols in
MS-Access?
Text data type is used to store alpha numeric characters or special symbols
in MS-Access.
d.
Which
view is used to modify a table in MS-Access?
Design view is used to modify a table in
MS-Access
e.
What
is modular programming?
Modular programming is a technique used
to divide program into many small, manageable, logical and functional modules
or blocks.
f.
Write
any two features of C language.
Any two features of C language are:
v It is easy to learn and implemented C language
v Occupies less memory
2.
Write
appropriate technical terms for the following: [2×1=2]
a. Law
that governs the legal issues of cyberspace.
Cyber Law
b. The
smallest unit to represent information on a quantum computer.
Qubit (Quantum bit)
3.
Write
the full forms of the following: [2×1=2]
a. STP:
Shielded Twisted Pair
b. WAP:
Wireless Application Protocol
Group
‘B’ [24 Marks]
4.
Answer
the following questions. [9×2=18]
a.
What
is computer network? Enlist any two advantages of it.
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:
a) Computer in a network can access the network-connected hardware devices like printers, disk drives, etc.
b) Data in a network environment can be updated from any computer. Updated data can be accessed by all computers on the network.
b.
What
is computer ethics? Write any two of them.
Cyber
ethics can be defined as to follow the rules and regulation of computer
technology and not to harm other computer users knowingly or unknowingly.
Any two cyber ethics are:
i.
You
should not spread false and illegal information.
ii.
You
should not destroy, erase or edit personal or group records.
c.
What
is software security? Write any two measures of hardware security.
The security given to the machine and
peripheral hardware from theft and from electronic intrusion (interruption) and
damage is called software security.
Any two measures of hardware security
are:
v Insurance
v Power
Protection Device
d.
What
is m-commerce? Write any two important services.
The
online transactions through the wireless handheld devices such as mobile phone,
laptop, palmtop, tablet, or any other personal digital assistant are called
m-commerce.
Any
two important services are:
v Buy
and sell goods and services
v Access
emails
e.
What
is IoT? Write any two importance of it.
IoT is a technology
that connects all electronic devices together and prompts them to exchange
information without any human intervention.
Any two important of IoT are:
a)
Communication between the connected devices becomes more
transparent and easier.
b)
Transferring data packets over a network reduces both time
and money.
f.
What
is database? Give any two examples.
A database is an organized collection of
related information that can be used for different purpose so that it can
easily be accessed, managed, and updated. E.g. Dictionary and Telephone
Directory.
g.
What
is primary key? List any two advantages of it.
A key that uniquely identifies each
record in a database is primary key.
Any two advantages of primary key are:
i) To reduce and control duplication of
record in a table.
ii) To set the relationship between tables.
h.
What
is data sorting? List any two advantages of using it.
Sorting is the process of arranging the
record in ascending or descending order according to a given field or fields.
Any two advantages of sorting are:
i) It helps to find specific information
quickly.
ii) It helps to arrange data in alphabetical order.
i.
What
type of work is done in MS-Access using form and query object.
Form is an object of Ms-Access which provides graphical
interface to enter data into the tables or multiple linked tables.
Query is an object of Ms-Access which extracts and arranges
information from a table in a manner that is specified.
5. 5. Write the output of the given program: Show with dry run in table. [2]
DECLARE SUB SHOW(A)
CLS
N=87
CALL SHOW(N)
END
SUB SHOW(A)
DO
B=A MOD 6+3
IF B MOD 4=0 THEN GOTO AA
PRINT B;
AA:
A=A-10
LOOP WHILE A>=50
END SUB
Dry run table
|
N |
A |
B=A MOD 6 + 3 |
IS B MOD 4=0 ? |
PRINT B |
A=A-10 |
WHILE A>=50 |
|
87 |
87 |
87 MOD 6 + 3 =3 + 3 = 6 |
6 MOD 4=0 ? 2 = 0 No |
6 |
87-10=77 |
77>=50 YES |
|
|
77 |
77 MOD 6 + 3 5+3=8 |
8 MOD 4=0? 0=0 YES |
|
77-10=67 |
67>=50 YES |
|
|
67 |
67 MOD 6+3 1+3=4 |
4 MOD 4=0? 0=0 YES |
|
67-10=57 |
57>=50 YES |
|
|
57 |
57 MOD 6+3 3+3=6 |
6 MOD 4=0? 2=0 NO |
6 |
57-10=47 |
47>=50 NO Loop Exits |
|
|
47 |
|
|
|
|
|
The output of the program is:
6 6
6.
Re-write
the given program after correcting the bugs: [2]
REM to add record in an existing file
CLS
OPEN “Record.Dat” FOR OUTPUT AS #1
AA:
INPUT “Enter Name, Class and Roll No.”;
Nm$, Cl, Rn
INPUT #2, Nm$, Cl, Rn
INPUT “More records”; Y$
IF UCASE$(Y$)=”Y” THEN GOTO aa
CLOSE “Record.dat”
END
Debugged program:
REM to add record in an existing file
CLS
OPEN “Record.Dat” FOR APPEND AS #1
AA:
INPUT “Enter Name, Class and Roll No.”;
Nm$, Cl, Rn
WRITE
#1, Nm$, Cl, Rn
INPUT “More records”; Y$
IF UCASE$(Y$)=”Y” THEN GOTO AA
CLOSE #1
END
7.
Study
the following program and answer the given questions. [2×1=2]
OPEN “Detail.dat” FOR INPUT AS #1
OPEN “Temp.dat” FOR OUTPUT AS #2
INPUT “Enter name of the students”; S$
FOR I=1 TO 10
INPUT #1, Nm$, Cl, A
IF S$< >Nm$ THEN
WRITE #2, Nm$, Cl, A
END IF
NEXT I
CLOSE #1, #2
KILL “Detail.dat”
NAME “Temp.dat” AS “Detail.dat”
END
a.
What
is the main objective of the program given above?
The
main objective of the program given above is to delete the record according to
the entered name.
b.
Do
you get any problem in the above program if “Kill” statement is removed? Give
reason.
Yes, the program will
display the error message and it won’t delete the record.
8.
Convert
/ Calculate as per the instruction. [4×1=4]
a. (11001101)2
= (?)16
Soln:
Converting
Binary to octal
|
Binary value in four bits |
1100 |
1101 |
|
Octal number |
C |
D |
(11001101)2
= (CD)16
b. (524)10
= (?)2
Soln:
|
|
|
Remainder |
|
2 |
524 |
|
|
2 |
262 |
0 |
|
2 |
131 |
0 |
|
2 |
65 |
1 |
|
2 |
32 |
1 |
|
2 |
16 |
0 |
|
2 |
8 |
0 |
|
2 |
4 |
0 |
|
2 |
2 |
0 |
|
2 |
1 |
0 |
|
2 |
0 |
1 |
(524)10
= (1000001100)2
a. (1010)2
× (110)2 – (1011)2 = (?)2
|
|
|
1 |
0 |
1 |
0 |
|
|
|
× |
1 |
1 |
0 |
|
|
|
0 |
0 |
0 |
0 |
|
|
1 |
0 |
1 |
0 |
× |
|
+ 1 |
0 |
1 |
0 |
× |
× |
|
1 |
1 |
1 |
1 |
0 |
0 |
|
|
- |
1 |
0 |
1 |
1 |
|
1 |
1 |
0 |
0 |
0 |
1 |
(1010)2
× (110)2 – (1011)2 = (110001)2
a. (10110)2
¸
(101)2
|
101) |
1 |
0 |
1 |
1 |
0( |
100 |
|
|
-1 |
0 |
1 |
|
|
|
|
|
0 |
0 |
0 |
1 |
0 |
|
|
|
|
|
|
|
-0 |
|
|
|
|
|
|
1 |
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Quotient=100
Remainder=10
9.
a.
Write a program in QBASIC that asks length, breadth and height of room and
calculate its area and volume. Create a user defined function to calculate area
and sub-program to calculate volume. Hint: [A=L×B], [V=L×B×H]
DECLARE FUNCTION AREA(L,B)
DECLARE SUB VOL(L,B,H)
CLS
INPUT “Enter Length”; L
INPUT “Enter Breadth”; B
INPUT “Enter Height”; H
PRINT “Area of room=”; AREA(L,B)
CALL VOL(L,B,H)
END
FUNCTION AREA(L,B)
AREA = L * B
END FUNCTION
SUB VOL(L,B,H)
V=L*B*H
PRINT “Volume of Room=”; V
END SUB
b.
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. Write a program in C language that
asks a number and check whether it is odd or even.
#include<stdio.h>
#include<conio.h>
int main()
{
int n;
printf("Enter
any number: ");
scanf("%d",
&n);
if(n%2==0)
printf("%d
is even number", n);
else
printf("%d
is odd number", n);
return 0;
}
OR
Write
a program in C language to display the series with their sum.1, 2, 3, 4 upto 10th
terms.
#include<stdio.h>
#include<conio.h>
int main()
{
int i, s=0;
i=1;
while(i<=5)
{
printf("%d \n", i);
s = s + i;
i++;
}
print("%d \n Sum=", s);
return 0;
}
***
