SOLVED TRITON SEE MODEL QUESTIONS | OPT.II Computer Science - Set 3
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COMPUTER
- SEE Model Question (Set-III)
Time: 2 Hours F.M.:
50
Group A ' 10
marks'
1. Answer
the following questions in one sentence. (6 × 1 = 6)
a. Which
connector is used with coaxial cable?
BNC
connector is used with coaxial cable.
b. Why
data decryption is necessary?
Data decryption is necessary to convert encrypted (coded) data
into readable form.
c. Which
data types are used to store graphics and numeric characters in MS-Access?
OLE
object is used for graphic and Number data type is used for numeric character
d. List
any two objects of MS-Access.
Any two objects of MS-Access are Query and Form.
e. What is
the function of MOD in Qbasic?
The
function of MOD in Qbasic is to find remainder.
f. Write the
name of unary operators used in C-language.
The name of unary operators used in
C-language are: Increment
(++) and decrement (- -)
2. Write
appropriate technical term. (2x1=2)
a. Network
connecting device that boosts the data signal. Repeater
b. A code
of behavior for using internet. Computer Ethics
3. Write
the full form for the following: (2x1=2)
a. POP – Post
Office Protocol
b. GCE - Google
Compute Engine
Group B '24 marks'
4. Answer
the following questions: (9x2=18)
a. "The
internet is called network of networks." Justify in your words.
Ans: The Internet is called a
"network of networks" because it connects millions of private,
public, academic, business, and government networks globally, enabling them to
communicate and share resources.
b. What is
hacking? What is the purpose of hacking?
Ans:
Hacking is the unauthorized access to or manipulation of computer systems or
networks, typically to steal, alter, or destroy data, or disrupt services.
The
purpose of hacking can be to steal or alter data, disrupt
services, spy on communications, or sometimes, to test and improve security
measures (ethical hacking).
c. Define
antivirus software with four examples.
Ans:
Antivirus software is a program designed to detect, prevent, and remove malware
from computer systems. Examples include Norton, McAfee, Avast, and Bitdefender.
d. What is
E-commerce? Write any four Nepali e-commerce web sites.
Ans:
E-commerce is the buying and selling of goods and services over the internet.
Four Nepali e-commerce websites are Daraz, SastoDeal, HamroBazar, and Muncha.
e. What is
AI? List any four areas of AI.
Ans: Artificial intelligence
(AI) is an area of computer science that emphasizes the creation of intelligent
machines that work and reacts like humans.
Four
areas of AI are natural language processing, robotics, Machine Learning, and
computer vision.
f. What is
DBMS? Give some examples of DBMS software.
Ans:
DBMS is a computerized system that stores data, processes them and provides
information in an organized form. E.g. MS-Access, Oracle, MySQL, Fox Pro etc
g. What
does data type used for? List out any four data types in MS-Access.
Data type is used for determining
the type of data that can be stored in that field.
Any
four data types in MS-Access are: text, memo, number and currency.
h. Differentiate
between select query and action query.
|
Select Query |
|
Action Query |
|
Select query is simply used to select and display the
relevant data from the database. |
|
An action query is a query that makes changes to or
removes many records in just one operation. |
|
It does not make change to database. |
|
It makes change to database. |
i. What is
report? Write down its important.
Ans: Report is one of the MS-Access
database objects used to present information in an effective and organized
format that is ready for printing.
Any two importance of the report are:
· Reports provide a formatted presentation
of data that is easy to read and understand.
· Reports enable users to summarize,
analyze, and visualize data in meaningful ways.
5. Write
the output of following program with necessary rough: (1x2=2)
DECLARE SUB SERIES ( )
CLS
CALL SERIES
END
A$="NEPAL"
B=1
FOR I =LEN (A$) to 1 STEP-2
IF B < > 3 THEN
PRINT MID$(A$, B, I)
ELSE
PRINT MID$(A$, 1, I)
END IF
B=B+1
NEXT I
END SUB
DRY RUN
|
A$ |
B |
I
=LEN (A$) to 1 STEP-2 |
B<
> 3 |
PRINT MID$(A$,B,I) yes |
MID$(A$,
1, I) no |
B=B+1 |
|
NEPAL |
1 |
5
to 1 YES |
1
< > 3 YES |
NEPAL |
|
1+1=2 |
|
|
2 |
3
to 1 YES |
2
< > 3 YES |
EPA |
|
2+1=3 |
|
|
3 |
1
to 1 YES |
3
< > 3 NO |
|
N |
|
|
|
4 |
7
TO 5 NO LOOP
EXITS |
|
|
|
|
OUTPUT
NEPAL
EPA
N
6. Re-write
the given problem after correcting bugs: (2x1=2)
REM to check whether the supplied
no is even or odd
DECLARE SUB TEST(N)
CLS
INPUT "ENTER THE
NUMBER;";N$
CALL TEST(N)
Y=2
R=Y MOD N
IF R=1 THEN
PRINT"EVEN"
OR
PRINT"ODD"
END
END SUB
Debugged Program
REM to check whether the supplied
no is even or odd
DECLARE SUB TEST(N)
CLS
INPUT "ENTER THE NUMBER:";N
CALL TEST(N)
END
SUB TEST(N)
Y=2
R=N MOD Y
IF R=0 THEN
PRINT"EVEN"
ELSE
PRINT"ODD"
END IF
END SUB
7. Study
the following program and answer the given questions: (2x1=2)
OPEN"Detail.dat"FOR INPUT
AS #1
OPEN"Temp.dat"FOR OUTPUT
AS#2
INPUT "Enter name of the
students";Sn$
FOR I = 1 TO 10
INPUT # 1, Nm$, CI, A
IF Sn$ < > Nm$ THEN
WRITE # 2, Nm$, CI, 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
is to delete the record of a specific student, identified by their name from
the data file Detail.dat.
b. Do you
get any problem in the above program if "KILL" statement is removed?
Give reason.
Yes, there would be a problem if
the KILL statement is removed. Because without the KILL statement, both
Detail.dat and Temp.dat will exist, and the renaming (NAME "Temp.dat"
AS "Detail.dat") will fail because a file cannot be renamed to an
existing file's name, causing an error and preventing the update.
Group C "16
mark"
8. Calculate
as per the instruction: (4x1=4)
(i) (ABC)16 = (?)8
Convert each hex digit to 4 binary
digits
ABC
= A B C
A = 1010
B = 1011
C = 1100
= 101 010 111 100
convert each 3 binary digits to
octal digits
= 101 010 111 100
101 = 5
010 = 2
111 = 7
100 = 4
(ABC)16
= (5274)8
(ii) (435)10 = (?)2
Divide by the base
2 to get the digits from the remainders:
|
Division |
Quotient |
Remainder (Digit) |
|
(435)/2 |
217 |
1 |
|
(217)/2 |
108 |
1 |
|
(108)/2 |
54 |
0 |
|
(54)/2 |
27 |
0 |
|
(27)/2 |
13 |
1 |
|
(13)/2 |
6 |
1 |
|
(6)/2 |
3 |
0 |
|
(3)/2 |
1 |
1 |
|
(1)/2 |
0 |
1 |
= (110110011)2
(435)10 = (110110011)2
(iii) (101)2 × (101)2 = (?)2
|
|
|
1 |
0 |
1 |
|
|
|
1 |
0 |
1 |
|
|
|
1 |
0 |
1 |
|
|
0 |
0 |
0 |
× |
|
1 |
0 |
1 |
× |
× |
|
1 |
1 |
0 |
0 |
1 |
(101)2 × (101)2
= (11001)2
(iv) (101101)2 ÷ (101)2
|
101) |
1 |
0 |
1 |
1 |
0 |
1 |
(1001 |
|
- |
1 |
0 |
1 |
|
|
|
|
|
|
0 |
0 |
0 |
1 |
0 |
1 |
|
|
|
|
|
- |
1 |
0 |
1 |
|
|
|
|
|
|
0 |
0 |
0 |
|
Q = 1001
R = 0
9. Answer
the following questions: (4x2=8)
a. Write a
program in QBASIC that asks radius of a circle to calculate its area and
circumference. Create a user-defined function to calculate area and sub-program
to calculate circumference.
DECLARE FUNCTION AREA (R)
DECLARE SUB CIR (R)
CLS
INPUT "ENTER RADIUS"; R
PRINT " AREA OF A CIRCLE="; AREA (R)
CALL CIR (R)
END
FUNCTION AREA (R)
AREA = 3.14 * R ^ 2
END FUNCTION
SUB CIR (R)
C = 2 * 3.14 * R
PRINT " CIRCUMFERENCE OF CIRCLE =" ; C
END SUB
b. A
sequential data file called "Record.dat" has stored data under the
field headings: Roll No., Name, Gender, English, Nepali, Maths and Computer.
Write a program to display all the information of those students whose marks in
English is more than 40.
OPEN " Record.dat " FOR INPUT AS #1
CLS
WHILE NOT EOF (1)
INPUT #1, R,
N$, G$, E, NE, M, C
IF E > 40
THEN
PRINT “Your Roll No. is”, R
PRINT “Your Name is”, N$
PRINT “Your Gender is”, G$
PRINT “Your Marks in English is”, E
PRINT “Your Marks in Nepali is”, NE
PRINT “Your Marks in Math is”, M
PRINT “Your Marks in Computer is”, C
END IF
WEND
CLOSE #1
END
10. Write a
program in C language to input a number then check whether the number is fully
divisible by 5 or not.
#include<stdio.h>
#include<conio.h>
int main()
{
int n;
printf("Enter any number: ");
scanf("%d", &n);
if(n%5= =0)
printf("%d is divisible by 5",n);
else
printf("%d is not divisible by 5",n);
return 0;
}
OR,
Write a program in
"C" language to display the series 2, 4, 6, 8 up to the 10th
term.
#include<stdio.h>
int main()
{
int n=2, i;
for(i=1;i<=10;i++)
{
printf("%d ",n);
n=n+2;
}
return 0;
}
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