Optional II Computer Science | Exam Paper | 2074 [2018] | RE-334 | SEE

DR Gurung

- May 02, 2018

SEE - 2074 (2018)
OPTIONAL II COMPUTER SCIENCE
RE-334
Time: 1hr 30 minutes
Full Marks: 50

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Candidates are required to give their answer according to the given instructions.

Group 'A'

Computer Fundamental (22 Marks)

1. Answer the following questions): [5x2=10]
a. Define computer network.
b. Define Internet.
c. Write the importance of power protection device to protect the computer system.
d. What is computer virus? Mention any two symptoms that can be seen when a computer is infected by computer virus.
e. What is cybercrime? Give any two examples.
2. a. Perform the conversion as per the direction: [2x1=2]
(i) (523)8 into Binary (ii) (2074)2 into hexadecimal.
b. Perform the binary calculation): [2x1=2]
(i) 110 x 101 (ii) 111010 ÷ 110
3. Match the following: [4x0.5=2]
Group 'A' Group 'B'
(a) RJ 45 connector (i) Duplicate copy
(b) Back up (ii) Multimedia
(c) Microphone (iii) Twisted pair cable
(d) Hub/switch (iv) Ring Topology
(v) Star Topology
4. Select the best answer of the following: [4x0.5=2]
a. Which of the following is not a network protocol?
(i) POP (ii) FTP (iii) TCP/IP (iv) NOS
b. Which of these software is used for photo editing?
(i) Ms-Excel (ii) Photoshop (iii) Power-Point (iv) Ms-Word
c. Which device is used to connect multiple networks that uses the same protocol.
(i) Bridge (ii) NIC (iii) Switch (iv) Gateway
d. Process of arranging the scattered files into a contiguous manner.
(i) Scandisk (ii) Backup (iii)Defragmentation (iv) Debugging
5. Write the appropriate technical terms of the following: [4x0.5=2]
a. The physical layout of local area network.
b. The business conducted through Internet.
c. The law which controls the crime which is done with the help of computer and Internet.
d. A computer or device which provides different services to other computers connected to the network.
6. Write the full form): [4x0.5=2]
(i) SMTP (ii) WAN (iii) URL (iv) VOIP

Group 'B'

Database (10 Marks)

7. Answer the following questions): [3x2=6]
a. Define Database.
b. What is data redundancy? How can it be reduced in database?
c. Mention any four data types that can be used in Ms-Access.
8. Select the correct answer): [4x0.5=2]
a. Which of the following is not accepted by primary key?
(i) Number (ii) Text (iii) Null value (iv) None
b. What is called rows in database table?
(i) Field (ii) Record (iii) Form (iv) None
c. Which data type consumes the least storage space?
(i) Text (ii) Yes/No (iii) OLE object (iv) Memo
d. Which is the default data type of Ms-Access?
(i) Memo (ii) Number (iii) Text (iv) Auto number
9. (Match the following): [4x0.5=2]
Group 'A' Group 'B'
(a) Data (i) Input, view, edit data
(b) Form (ii) Formated output
(c) Report (iii) Collection of raw facts
(d) Table (iv) Question to the database
(v) Stores data in database

Group 'C'

Programming (18 Marks)

10.

a. What is formal parameter? [1]

b. List any two data types used in C programming language. [1]

c. Write the function of KILL and CLOSE statements. [1]

11. Re-write the given program after correcting the bugs: [4x0.5=2]

REM TO find the factorial of a given number.

DECLARE FUNCTION FACTO (N$)

CLS

INPUT "Enter a number", X

PRINT "The Factorial is: ", FACTO (N)

END

FUNCTION FACTO (N)

F = 1

WHILE N = 0

F = F*N

N = N - 1

WEND

F = FACTO

END FUNCTION

12. Write the output of the following program: [2]

DECLARE SUB Display (T$)

CLS

T$ = "COMPUTER"

CALL Display (T$)

END

SUB Display (T$)

FOR C = 1 TO LEN (T$) STEP 2

D$ = MID$ (T$, C, 1)

PRINT D$;

NEXT C

END SUB

13. Study the following program and answer the given questions: [2x1=2]

DECLARE FUNCTION SUM (N)

CLS

INPUT "Enter any number", N

S = SUM (N)

PRINT "The Sum of individual digit is:", S

END

FUNCTION SUM (N)

WHILE N > 0

R = N MOD 10

T = T + R

N = N\10

WEND

SUM = T

END FUNCTION.

a) State the purpose of using variable S in line 4 in above program.

b) Write the use of MOD in above program.

14.

a. Write a program to calculate area of a circle using Sub..... End Sub. [3]

b. Write a program using FUNCTION... END FUNCTION to count the number of words in a sentence. [3]

c. Write a program to store Roll no., Name, Class and Address of any five students. [3]

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DR Gurung

A Learner (अज्ञान जस्तो ठूलो शत्रु अरु केही छैन।) 🙏🙏

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