#### Half Yearly Model Question Paper 2019

12th Standard EM

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Computer Applications

Time : 03:00:00 Hrs
Total Marks : 70

Part I

Choose the most suitable answer from the given four alternatives and write the option code with the corresponding answer.

15 x 1 = 15
1. you need hardware, software and _________ to make multimedia

(a)

network

(b)

compact disk drive

(c)

good idea

(d)

programming knowledge

2. To select a word, press __________ with I - Beam.

(a)

Select click

(b)

right click

(c)

double click

(d)

triple click.

3. __________ Command is used to delete a database.

(a)

Delete database database_name

(b)

Delete database_name

(c)

drop database database_name

(d)

drop database_name

(a)

alphabet

(b)

number

(c)

both a and b

(d)

either a or b

5. __________ arrays are a key-value pair data structure.

(a)

Associative

(b)

Indexed

(c)

Multi-dimensional

(d)

All of these

6. What will be the output of the following PHP code ?
< ?php
x;
if (x == 0)
print “hi” ;
else
print “how are u”;
print “hello”
? >

(a)

how are uhello

(b)

hihello

(c)

hi

(d)

no output

7. Which of the following is an exit check loop?

(a)

foreach

(b)

for

(c)

while

(d)

do..while

8. HTML classes that is already defined and allow us to apply styles on it are called as

(a)

Pseudo classes

(b)

Css classes

(c)

Javascript classes

(d)

None

9. The _________, “the Net,” is a worldwide system of computer networks

(a)

Internet

(b)

mobile

(c)

communication

(d)

protocol

10. ________is available below the root domain.

(a)

!ANA

(b)

IPv4

(c)

IPv6

(d)

TLD

11. WWW was invented by

(a)

Tim Berners Lee

(b)

Charles Babbage

(c)

Blaise Pascal

(d)

John Napier

12. Which of the following is not a open source application?

(a)

AUDACIlY

(b)

VLC

(c)

Mozila Firefox

(d)

MSOffice

13. ___________ is a platform for advertising products to targeted consumers.

(a)

Television

(b)

(c)

Mobile phones

(d)

social Media

14. Typoplracy Is variant of__________

(a)

Payment Frauds

(b)

Tampering

(c)

Cybersquatting

(d)

All of the above

15. The ______are the piece of actual data.

(a)

Segments

(b)

Elements

(c)

Messages

(d)

Interchange

16. Part II

Answer any 6 questions. Question no. 24 is compulsory.

6 x 2 = 12
17. What are the various of Digital Media?

18. Write the steps to hide ruler in page maker.

19. What is XAMPP?

20. How to declare variables in PHP?

21. What is MySQLi?

22. What is the use of packet switching?

23. What are the two types of fiber-optic cable?

24. What is trace file?

25. What is the Encryption?

26. Part III

Answer any 6 questions. Question no. 33 is compulsory.

6 x 3 = 18
27. What are the major the functions performed using SQL?

28. Differentiate Server side and Client Side Scripting language.

29. Write the rules for parameters.

30. Differentiate Switch and if else statement

31. Write short notes on Do while Loop.

32. Write the features Form Handling.

33. How the connection will get success in mysqli_connect( ) function?

34. Write some of the features of Open Source Hardware

36. Part IV

5 x 5 = 25
1. Explain in detail Process of Multimedia

2. Write the steps to draw a star using polygon tool?

1. What is credit card? Explain the key players of a credit card payment system and bring out the merits of it.

2. Write short note on Tampering.

2. Write a short note on paramet rs of mysqli_connect( ) function?

1. Write a PHP program to display week days using switch case statement.

2. Explain in detailed about Third Generation of Mobile Networks.

1. Explain the following
(i) Primary Key
(ii) Foreign Key
(iii) Candidate Key
(iv) Super Key
(v) Composite key

2. Explain operators in PHP with example.