Computer science class 10

 

Time: 1: 30 hrs                                                                                                   

Class: 10                                                                                                                                FM: 50

Subject: Computer science                                                                                                PM: 20

Group A

Computer Fundamental (22 Marks)

1. Answer the following question.                              ]

a. Write any two advantanges of Bus topology.

b. Define protocol.

c. Define computer Security.

d.What is cloud Backup?

e. Define malicious code.

2. Convert as instructed:                                ]

a .(1110111011)₂ into Octal

b. (768)₈ into Hexadecimal

3. Perform the binary calculation.                 ]

a. 11111101+1111111                        b. 1111 111

4. Write down the full form.                          

a. SMTP   b. POP             c. DPI    d.  NOS

5. Give technical term of following.              

a. An electronic device  that supplies electric current when the electricity is cut off.

b. A device that can connect networks  which may use different  communication protocols.

c. A set of rules that governs the communication among the computers in  a network

d. Combination of text, Audio and Video.

6. Select the correct option                           

a.Which of the  following is not a  network protocol?

a.POP               b.FTP               c.TCP/IP          d.NOS

b.Newpaper communication is ……..directional

a.Unidirectional               b. Bi-directional    c.Multidirectional             d.None

c.Which one of the following is harmed by computer virus?

a. monitor        b. mouse          c. printer          d. harddisk

d. In binary number system 1 and 0 means …………..

a. ON, OFF      B. YES, TRUE c. OFF ,NO      d. YES,ON

7. Match the following.                                              

 Group A                                 Group B

RJ 45 Connector                      Duplicate Copy

Back Up                                  Multimedia

Microphone                             Twisted pair cable

Hub/ Switch                             Ring Topology

                                                Star topology

Group B

Database (10 Marks)

8.Answer the following question.

a. Define Data  and Database.

What is primary key? Write it's importance.

Name the four data type used in Ms- Access.

9.State  whether the following statements are true or false.

a. Report is a database object used to print final report.

b.Money is a datatype  used in Ms- access.

c.Arranging all the records in a table either ascending or descending order in filtering.

d.Maximum data size of yes/no is 10 bytes.

10. Match the following.                    

Group A                                                         Group B

Contain Distinct value                                     Speed up Searching

MS- Access                                                      Autonumber

Index                                                               Primary Key

Cannot be updated                                           Data Type

                                                                        DBMS 

Group C

Qbasic Programming (18 marks)

10.Answer the following question.

What is modular programming?

What is an operator?

What is the use of  LINE INPUT # Statement

11. Rewrite the following program with correcting the bugs.                      [2]

REM  To find the square root of given no.

CLS

DECLARE SUB SQUARE (N)

ENTER N

DISPLAY SQUARE(N)

END

SUB SQUARE (N)
S=M^0.5  PRINT S

FINSH

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

DECLARE FUNCTION FIND()

PRINT FIND

END

FUNCTION FIND

FOR N=1 TO 9 STEP 2

LET S=S+N

NEXT N

FIND =S

END FUNCTION

13.Read the following program and answer the following question.

DECLARE SUB SUM(N)

N=5

CALL SUM(N)

END

FOR X=1 T0 N

S=S+X

NEXT X

PRINT S

END SUB

a. How many time loop repeat?

b. Write the name of the procedure used in the above program.

14a.Write a program calculate the average of three number using function procedure.[3]

b. Write a program that display the sum of digit of an integer using sub procedure     .[3]

c. A data file "STAFF.dat " has stored records of few employees with EmPID , First name, last name, post and salary. Write a program to display all the record of  the employees.   [3]

 

****Best Of Luck ****