Qbasic Programming Solutions and SLC / SEE Computer Science Questions Solved : SOLVED SEDIPS - SEE Efficiency Test: 2025 Subject: Computer Science

SEE Efficiency Test: 2025

Subject: Computer Science

Time: 2:00 hrs

Full Marks: 50

Candidates are required to give their answers in their own words as far as practicable.

GROUP A

(Very Short Questions-10 Marks)

1. Answer the following questions: (6×1=6)

a) List any two mode of Data Communication.

Ans: Any two mode of data communication are simplex mode and duplex mode (half duplex mode and full duplex mode).

b) Define Firewall.

Ans: A firewall is a security system that monitors and controls incoming and outgoing network traffic to protect systems from unauthorized access and cyber threats.

c) Write any two types of Cloud Computing.

Ans: Any two types of cloud computing are public cloud and private cloud.

d) What is M-Commerce ?

Ans: M-commerce refers to the buying and selling of goods and services through mobile devices like smartphones and tablets.

c) What do you mean by Argument?

Ans: An argument refers to a value or variable that is passed to a procedure when it is called.

f) List any two keywords used in C Language.

Ans; Any two keywords used in C Language are int and return.

2. Give the appropriate technical terms of the following: (2×1=2)

a) The specific computer or specific internet location that delivers the web contents to the client devices via internet. Web Server

b) The software intentionally designed to cause to a computer, server, client, or computer network, leak private information, gain unauthorized access to information or system. Malware

3. Write the full form for the following: (2×1=2)

a) SaaS - Software as a Service

b) VRML - Virtual Reality Modeling Language

GROUP-B

(Short Questions-24 Marks)

Answer the following questions: (9×2=18)

a) Define Bus Topology? Write any two disadvantages of Ring Topology.

Ans: Bus topology is a network configuration where all devices are connected to a single central cable known as a "bus".

Any two disadvantages of Ring Topology are:

· If one device or the connection between two devices fails, the whole network can stop working.

· Finding and fixing problems in the network can be harder compared to other topologies.

b) What is Digital Footprint? List any two consideration to be followed for managing Digital Footprint.

Ans: A digital footprint is the trail of data and information left behind by an individual's online activities which includes social media posts, website visits, online purchases, and other digital engagements.

Any two consideration to be followed for managing Digital Footprint are:

· Subscribed accounts and unused social media accounts which are no longer in use should be unsubscribed or deleted.

· Ensure the content posted protect your privacy.

c) What is Password Policy? Write any two Password Policy.

Ans: A password policy is a set of rules or guidelines designed to ensure that passwords are secure.

Any two Password Policy are:

· Don't use a sequence like abcd or 1234 which are, again, easily guessable.

· Mix characters, numbers and symbols. Also, mix small and capital letters.

d) Differentiate between Traditional Commerce and E-commerce

Traditional Commerce	E-commerce
Traditional commerce refers to the buying and selling of goods and services from person to person without use of internet.	E-commerce refers to the buying and selling of goods and services over the internet
Customers can inspect products physically before purchase.	Customers can not inspect products physically before purchase.

e) What do you mean by lot? List its any two advantages.

Ans: Internet of Things (IoT) refers to a network of interconnected physical devices that can collect and exchange data over the internet without requiring human intervention.

Any two advantages are:

v It reduces the human effort, so it saves a lot of time.

v Information is easily accessible from any place at any time on any device.

f) What is do you mean by DBMS? Write any two advantages of DBMS.

Ans: DBMS is a computerized system that stores data, processes them and provides information in an organized form.

Any two advantages of DBMS are:

· It reduces data redundancy which means duplication of data.

· It allows multiple users to access the same data simultaneously.

g) While designing table structure which data types are suitable to store information about teacher's name, address, salary and date of birth?

Ans: Teacher’s Name – Text

Addess – Memo

Salary – Currency

Date of bith – Date/Time

h) Differentiate between Query and Filter.

Filter		Query
A filtering can be used to display all the data of a single table based on a specified condition	A querying can be used to display selected data from one or more tables based on a specified condition or no condition at all.
Altering the data displayed changes the original data of the table.	Manipulating the data of a saved query does not affect the original data.

i) What is Data Redundancy? How it can be reduced in database?

Ans: Data redundancy refers to the repetition of data in a database, where the same data is stored in multiple places.

Data redundancy can be reduced by normalizing the database, eliminating duplicate data and storing it in separate tables, and using foreign keys to establish relationships between the tables.

5. Write the output of the following program showing necessary rough:

DECLARE SUB DISPLAY ( )

CLS

CALL DISPLAY

END

SUB DISPLAY

LET N = 100

DO UNTIL N < 50

R=N MOD 9+3

IF R MOD 4=0 THEN GOTO BOTTOM

PRINT R

BOTTOM:

N=N-10

LOOP

END SUB

Dry Run

N	N < 50	R=N MOD 9+3	R MOD 4=0?	NO PRINT R	YES N=N-10
100	100<50 No	100 MOD 9 + 3 1+3=4	4 MOD 4=0? 0=0 YES		100-10=90
90	90<50 No	90 MOD 9 +3 0+3=3	3 MOD 4=0? 3=0 No	3	90-10=80
80	80<50 No	80 MOD 9 +3 8+3=11	11 MOD 4 =0? 3=0?nO	11	80-10=70
70	70<50 No	70 MOD 9 +3 7+3=10	10 MOD 4=0? 2=0?No	10	70-10=60
60	60<50 No	60 MOD 9 + 3 6+3=9	9 MOD 4=0? 1=0 No	9	60-10=50
50	50<50 No	50 MOD 9 +3 5+3=8	8 MOD 4 =0? 0=0 YES		50-10=40
40	40<50 YES LOOP EXITS

The output of the program is:

6. Rewrite the program after correcting the bugs:

REM to count total number of values existing among a different number input by a user DIVISIBLE BY 3.

DECLARE FUNCTION DIVBY3 (a( ), n)

CLS

FOR CNT=0 TO n-1

INPUT "Enter the number"; a(n)

NEXT CNT

Totno=DIVBY3 (a, n)

PRINT "Total number of values divisible by 3 is"; totno

END

FUNCTION DIVBY3( )

count=0

FOR CNT=0 to n-1

IF a(CNT) MOD 3=0 THEN count=count+1

NEXT CNT

COUNT=DIVBY3

END FUNCTION

Debugged Program

REM To count the total number of values divisible by 3 among numbers input by the user.

DECLARE FUNCTION DIVBY3 (a( ), n)

CLS

INPUT "Enter the number of values: "; n

DIM a(n)

FOR CNT = 0 TO n-1

INPUT "Enter the number: "; a(CNT)

NEXT CNT

Totno = DIVBY3(a( ), n)

PRINT "Total number of values divisible by 3 is"; Totno

END

FUNCTION DIVBY3 (a(), n)

count = 0

FOR CNT = 0 TO n-1

IF a(CNT) MOD 3 = 0 THEN count = count + 1

NEXT CNT

DIVBY3 = count

END FUNCTION

7. Read the following program and answer the following questions:

OPEN "BUSRIDER.TXT" FOR INPUT AS #1

OPEN "TEMP.TXT" FOR OUTPUT AS #2

CLS

WHILE NOT EOF (1)

INPUT #1. STUDENTNAME$, CLASS, BUSCODE, BUSSTOP$

IF UCASE$(BUSSTOP$) < > UCASE$("KATHMANDU") THEN

WRITE #2, STUDENTNAME$, CLASS, BUSCODE, BUSSTOP$

PRINT STUDENTNAME$, CLASS, BUSCODE, BUSSTOP$

END IF

WEND

CLOSE #1, #2

KILL"BUSRIDER.TXT"

NAME "TEMP.TXT" AS "BUSRIDER.TXT"

END

a) What is the main objective of the program given above?

Ans: The main objective of the program given above is to delete the records whose address is KATHMANDU.

b) Do you get any problem in above program if "Kill" statement is removed? Give reason.

Ans: Yes, the program will not work correctly because the original file "BUSRIDER.TXT" will not be deleted, and renaming "TEMP.TXT" to "BUSRIDER.TXT" will fail due to the existence of the original file.

GROUP-C

(Long Questions-16 Marks)

8. Calculate/Convert as per the instruction:(4×1=4)

a) (101101) X (1110)2-(10101)

				1	0	1	1	0	1
					x	1	1	1	0
				0	0	0	0	0	0
			1	0	1	1	0	1	x
		1	0	1	1	0	1	x	x
	1	0	1	1	0	1	x	x	x
1	0	0	1	1	1	0	1	1	0
				-	1	0	1	0	1
1	0	0	1	1	0	0	0	0	1

(101101) X (1110)2-(10101) = (1001100001)

b) (11011010) / (10101)

10101)	1	1	0	1	1	0	1	0	(1010
	1	0	1	0	1
	0	0	1	1	0	0	1
			1	0	1	0	1
	0	0	0	0	1	0	0	0
								0
					1	0	0	0

Q=1010

R=1000

c) (DEF86)16= (?)8

Convert each hex digit to 4 binary digits

DEF86

= D E F 8 6

D= 1101

E = 1110

F = 1111

8 = 1000

6 = 0110

convert each 3 binary digits to octal digits

= 11 011 110 111 110 000 110

3= 011

3 = 011

6 = 110

7 = 111

6 = 110

0 = 000

6 = 110

= 3 3 6 7 6 0 6

(DEF86)16= (3367606)8

d) (872)10 = (?)2

Divide by the base 2 to get the digits from the remainders:

Division by 2	Quotient	Remainder (Digit)
(872)/2	436	0
(436)/2	218	0
(218)/2	109	0
(109)/2	54	1
(54)/2	27	0
(27)/2	13	1
(13)/2	6	1
(6)/2	3	0
(3)/2	1	1
(1)/2	0	1

= (1101101000)₂

(872)10 = (1101101000)2

a) Write a QBASIC program that asks radius and height then calculate Area of curved surface and Total surface area. Create a USER DEFINED FUNCTION to calculate Total surface area and SUB-PROGRAM to calculate Area of curved surface. [Hint: TSA=2pir(r + h) and AOCS=2pir²] (4)

DECLARE FUNCTION TSA (r, h)

DECLARE SUB AOCS (r, h)

CLS

INPUT "Enter radius: "; r

INPUT "Enter height: "; h

PRINT "Total Surface Area: "; TSA(r, h)

CALL AOCS(r, h)

END

FUNCTION TSA (r, h)

TSA = 2 * 3.14 * r * (r + h)

END FUNCTION

SUB AOCS (r, h)

AOCS = 2 * 3.14 * r * h

PRINT "Area of Curved Surface: "; AOCS

END SUB

b) A sequential data file "Reverse. Txt" contains name of the 20 teachers. Write a QBASIC program to display name of the teachers in Reverse form. (4)

CLS

DIM teachers(20) AS STRING

OPEN "Reverse.Txt" FOR INPUT AS #1

FOR i = 1 TO 20

LINE INPUT #1, teachers(i) ' Read teacher names into an array

NEXT i

CLOSE #1

PRINT "Teachers' Names in Reverse Order:"

FOR i = 20 TO 1 STEP -1

PRINT teachers(i) ' Display names in reverse order

NEXT i

END

10. Write a program in C language that asks the value of 3 sides of a triangle then check whether triangle is Scalene or not. (4)

#include <stdio.h>

int main()

{

int a, b, c;

printf("Enter three sides of a triangle: ");

scanf("%d %d %d", &a, &b, &c);

if (a != b && b != c && a != c) {

printf("The triangle is Scalene.\n");

} else {

printf("The triangle is not Scalene.\n");

}

return 0;

}

Write a program in C language to display the odd numbers from 1000 to 500 with their sum.

#include <stdio.h>

int main()

{

int sum = 0;

for (int i = 1000; i >= 500; i--)

{

if (i % 2 != 0)

{

printf("%d\n", i);

sum += i;

}

printf("Sum of odd numbers: %d\n", sum);

return 0;

}

"Good Luck"

Qbasic Programming Solutions and SLC / SEE Computer Science Questions Solved

Friday, February 7, 2025

SOLVED SEDIPS - SEE Efficiency Test: 2025 Subject: Computer Science

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