COMPUTER MODEL SET-GRADE 11(XI)-NEB

 

COMPUTER MODEL SET

Grade : XI                                                                                                                                  F.M. : 50

                                                                                                                                                    Time : 2 hrs

COMPUTER SCIENCE (4271)

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

practicable. The figures in the margin indicate full marks.

GROUP A

Multiple Choice Questions.

Tick / Select the best alternative    .[9  1 = 9 ]

1. The main electronic device used by fifth generation computer is.

        a. IC Chip

        b. Bio chip

        c. Transistor

        d. Microprocessor

2. Which of the following produces the best quality graphics reproduction?

        a. Laser printer

        b. Ink jet printer

        c. Dot matrix printer

        d. Plotter

3. How is an array initialized in C language

        a. int a[3]= {1,2,3};

        b. int a= {1,2,3};

        c. int a[]= {1,2,3};

        d. int a(3)= {1,2,3};

4. What is an operating system?

        a. interface between the hardware and application programs

        b. collection of programs that manages hardware resources

        c. system service provider to the application programs

        d. all of the above

5. In which part of the HTML metadata is contained?

        a. Head tag

        b. title tag

        c. body tag

        d.html tag

6. Extracting files from the server is

        a. Downloading

        b. Uploading

        c. Trashing

        d. Transferring

7. Which of the following is not a type of cyber-crime?

        a. Data theft

        b. Software piracy

        c. installing antivirus for protection

        d. Hacking

8. Which of the following expressions is in the sum-of-products (SOP) form?

        a. (W + X)(Y + Z)

        b. (W)X(YZ)

        c. WX(YZ)

        d. WX + YZ

9.ROM is _ _ _ _ _ _ and _ _ _ _ _.

        a. volatile, temporary

        b. non-volatile, temporary

        c. volatile, permanent

        d. non-volatile, permanent

GROUP B
Short Answer Questions
Attempt all questions. [5  5 = 25]

10. What is computer? Differentiate between primary and secondary storage.[1+4]

11. What is Binary number system? Convert (DAD)16 into octal number system.[1+4]

OR

Explain XOR and NAND gate with truth table and logic gate.[2.5+2.5]

12. Write the five uses of word processor in school.[5]

OR

What is cyber security? Explain.[5]

13. What is HTML? Explain different types of lists of HTML.[2+3]

14. How is multimedia used in business? Explain.[5]

GROUP C

Long answer Questions

Attempt all questions.            [2  8 = 16]

15. What is OS? Write any four functions of OS. Explain the role of OS. [2+2+4]

16. Write a C program to enter 15 integer numbers into an array and display the first

and last entered number and also calculate the sum of the entered numbers.[2+2+4].

OR

Write a C program to enter two strings, the program should convert first entered

string into uppercase string and second entered string into lowercase string. Also

find the length of the first entered string.[2+2+2+2]

THE END