Grade Nine Model Set Solution 10

                              Class Nine [Computer Solution]

MODEL QUESTIONS SET- 10

Group A : “Computer Fundamentals” [20 marks]

1.              Answer the following questions.                                          4×2=8

                 a) What do you meant by storage capabilities ?What are the unit to measure the storage capacity of a disk ?

ANS:  STORAGE  capabilities is the way of measure how much data file folder can be store in a disk.

NAME	EQUAL TO
Bit	1 bit
Nibble	4 bits
Byte	8 bits
Kilobyte	1024 bytes
Megabyte	1, 024kilobytes
Gigabyte	1, 024 megabytes
Terrabyte	1, 024 gigabytes
Petabyte	1, 024 terrabytes

                 b) What is programd evelopment cycle ? Why is it necessary ?

Program Development Life Cycle (PDLC) is a systematic way of developing quality software. It provides an organized plan for breaking down the task of program development into manageable chunks, each of which must be successfully completed before moving on to the next phase.

                 c) Write down the characteristics of a good algorithm.

·         Ams;    The inputs must be specified.

·         The outputs must be specified.

·         Definiteness.

·         Effectiveness.

·         Finiteness.

                 d) Define the term ‘Algorithm’ and ‘Flowchart’.

Ans;          An algorithm is a set of instructions designed to perform a specific task,

                  A flowchart can also be defined as a diagrammatic representation of an algorithm, a step-by-step approach to solving a task.

2.              State True or False.                                                              2

                 a) Text editor, memor dump program and Norton utilities are the examples of utility program. false

                 b) Payroll package and inventory package are the examples of tailored software.true

                 c) A typical 3.5 inch floppy disk holds 1.2 MB of data.false

                 d) John Napier invented Napier’s bone in 1690. true

3.              Write down the full form for the following.                        2

                 a) LSIC= large Scale Integrated circuit)     b) LISP            c) VDU=video display unit      d) SRAM=static random access memory

4.              Match he following.                                                            2

                 APPLE-I                  1971

                 IBM-PC                  1993

                 Intel i486                1976

                 Intel 4004               1981

                                                1965

5.              Write down the single technical term for the following.      2

                 a) An electronic device capable of storing electrical energy.

                 b) An electronic device that controls the flow of electrons in a vacuum.

                 c) A blinking point of light displayed on the screen to help the user in the input data.                   

                 d) Teh act of entering data and instructions into a computer.

6.              a) Convert the follwing as indicated :                                              2

                        i) (9771)10 into binary                        ii) (745)8 into hexdecimal.

                 b) Perform the following binay calculation :                                    2

                        i) (111111000)2 + (1000111)2 - (1101)2

                        ii) (11101)2 × (110)2 + (1101011)2

Group B: “Operating System” 5 marks

7.              What is cold booting and warm booting ? Name any three DOS system files.                                        

Ans;  cold booting is the way of starting computer where as warm boot is the way of restarting computer.

8.              Write down  the effects of the followig DOS command.     2

                 a. C:]>REN*.DLL*.EXE      b. C:\>DIR A:\PROJECT\*.XLS

9.              Answer the given questions:                                                 2

                 a) How to create a new folder on the desktop ? Write with steps.

Right click the mouse

Click on new

Select folder

Rename the folder

                 b) What do you understand by folder anagement ? Justify your answer.

Ans: the way of organize the folder is called folder arrangement.

Group C : “HTML” 5 marks

10.            Answer the given questions :                                                            3

                 a) What are the most important features of HTML ?

·         ams;     Platform independent language.

·         It is not case sensitive language.

·         Title, Lists, Paragraph, etc.

·         Controls fonts, colors, positioning using CSS( Cascading Style Sheets).

·         We can build tables.

                 b) Write down the two advantages of HEML.

Ans’          easy to code

                 Not case sensitive language.

                 c) What is teh purpose of <SUB> elements in HTML ?

to create subscript of text.ex.hi _hello gives Hi_hello

11.            State True or False.                                                              2

                 a) .......... attribute displays a solid black line that has no shading.

                 b) ......<sup>.... element converts text into superscript form.          

                 c) The........<effect>..attribute enables us to set the movement of the marquee as scroll, slide and alternate.

Group D: “Programming” [20 Marks]

12.            a) What do you understand by syntax error and run time error?      1

Ans ; A syntax error is an error in the source code of a program

                 Time error is the difference between the time reported by a clock, compared to the time reported by a reference clock at the same instant. It is always relative to a reference, and has no meaning without a reference to compare to.

                 b) Mention ay two features of QBASIC.

Easy to code

Easy to understand.

                 c) What is the function of LOCATE and SWAP statement?

Locatate = to locate values

Swap=to exahnge value

13.            a) Draw a flochart to find out the greatest number among three different numbers.                                                                    2

                 b) Write down the output of the following program:                       2

                        CLS

                        M$=“DHADING BENSI”

                        L = LEN (M$)

                        A = 1

                        B = 5

                        FOR K = 1 TO L STEP 2

                        PRINT TAB b.; MID$(M$, A, L)

                        A = A + 1

                        L = L - 2

                        B = B + 1

                        NEXT K

                        END

14.            Read the following program and answer the question given below.  4

                 CLS

                 X = 5

                 FOR I = 1 TO X

                 S + S + I

                 NEXT

                 PRINT S

                 END

a)                  Rewrite the above program using WHILE........WEND.

CLS

                 X = 5

                 While i<=x

                 S = S + I

                 Wend

                 PRINT S

                 END

b)                  What will be the output of the above program?

15

c)                  How many times is the ody of the above program execute ?

5

d)                  Find the result if the lien S = S + I is chaged to S = S + 1 2.

e)                   30

15.            a) Write a program to input ten numbers and print them in reserve order.

CLS

DIM num(10)

FOR i = 1 TO 10

    input num(i)

NEXT i

FOR i = 0 TO 10

    FOR j = i + 1 TO 10

        IF num(i) < num(j) THEN

            temp = num(i)

            num(i) = num(j)

            num(j) = temp

        END IF

    NEXT j

NEXT i

PRINT "reveres is:"

FOR i = 1 TO 10

    PRINT num(i)

NEXT i

END

                 b) Write a program that lets the user enter ten numbers into an array. The program should display the largest value stored in teh array.

CLS

DIM num(10)

FOR i = 1 TO 10

    input num(i)

NEXT i

Big=num(0)

FOR i = 0 TO 10

 

        IF big< num(i) THEN

            Big=nu(i)

        

        END If

NEXT i

PRINT "big is:”; big

END

                 c) Write a program to input the hours worked by five employees who al make the same hourly wage in an array. Then calculate gross pay for five employees. Overtime is paid at Rs. 5 per every hours worked about 40 hours.

End