#### 12th Standard English Medium Computer Applications Reduced Syllabus One mark Important Questions with Answer key - 2021(Public Exam)

12th Standard

Reg.No. :
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Computer Applications

Time : 01:00:00 Hrs
Total Marks : 50

Part A

50 x 1 = 50
1. One of the disadvantages of the multimedia is its __________

(a)

cost

(b)

(c)

usability

(d)

relativity

2. GIF use _______ color look up table.

(a)

8 bit

(b)

8 KB

(c)

8 MB

(d)

13bit

3. Which menu contains the New option?

(a)

(b)

(c)

(d)

4. To select an entire document using the keyboard, press ___________

(a)

Ctrl + A

(b)

Ctrl + B

(c)

Ctrl + C

(d)

Ctrl + D

5. The ___________ diagram gives a logical structure of the database graphically?

(a)

Entity-Relationship

(b)

Entity

(c)

Architectural Representation

(d)

Database

6. __________ represents a “tuple” in a relational database?

(a)

Table

(b)

Row

(c)

Column

(d)

Object

7. What does PHP files have a default file extension?

(a)

.html

(b)

.xml

(c)

.php

(d)

.ph

8. Which of the following must be installed on your computer so as to run PHP script?

(a)

(b)

windows

(c)

Apache

(d)

IIS

9. What will be the output of the following PHP code?
< ?php
num = 1;
num1 = 2;
print \$num . “+”. \$num1;
? >

(a)

3

(b)

1 + 2

(c)

1.+.2

(d)

Error

10. Which one of the following is the right way of defining a function in PHP?

(a)

function { function body }

(b)

data type functionName(parameters) { function body }

(c)

functionName(parameters) { function body }

(d)

function fumctionName(parameters) { function body }

11. Statement which is used to make choice between two options and only option is to be performed is written as

(a)

if statement

(b)

if else statement

(c)

then else statement

(d)

else one statement

12. What will be the output of the following PHP code ?
< ?php
x = 10;
y = 20;
if (x > y + y != 3)
print “hi” ;
else
print “how are u”;
? >

(a)

how are u

(b)

hi

(c)

error

(d)

no output

13. Which loop evaluates condition expression as Boolean, if it is true, it executes statements and when it is false it will terminate?

(a)

For loop

(b)

For each loop

(c)

While loop

(d)

All of them

14. What will be displayed in a browser
when the following PHP code is
executed:
< ?php
for (counter = 20; counter < 10;
counter++){
}
echo “Counter is: \$counter”;
? >

(a)

(b)

Counter is: 20

(c)

Welcome to Tamilnadu Counter is: 22

(d)

15. What will be the output of the
following PHP code ?
< ?php
for (x = -1; x < 10;--x)
{
print x;
}
? >

(a)

123456713910412

(b)

123456713910

(c)

1234567139104

(d)

Infinite loop

16. What does fopen() function do in PHP?

(a)

It used to open files in PHP

(b)

It used to open Remote Server

(c)

It used to open folders in PHP

(d)

It used to open Remote Computer

17. Which is the correct function Closing Connection in PHP ?

(a)

mysqli_close(“Connection Object”);

(b)

close(“Connection Object”);

(c)

mysql_close(“Connection Object”);

(d)

mysqli_close(“Database Object”);

18. Which is the not a correct MySQL Function in PHP ?

(a)

Mysqli_connect() Function

(b)

Mysqli_close() Function

(c)

mysqli_select_data() Function

(d)

mysqli_affected_rows() Function

19. Which version of PHP supports MySQLi fuctions ?

(a)

Version 2.0

(b)

Version 3.0

(c)

Version 4.0

(d)

Version 5.0

20. Computer network devices that originates route and terminate the data were called as

(a)

Hub

(b)

Resource

(c)

Node

(d)

Cable

21. Which among them was challenging to the business people on computer networking

(a)

Hacking

(b)

Viruses

(c)

Both a & b

(d)

none of this above

22. People now a days getting relaxed via

(a)

(b)

Corporate company

(c)

News papers

(d)

Social media

23. Facebook was created in _______________ year

(a)

2002

(b)

2004

(c)

2013

(d)

2010

24. Which innovation made the people to use Internet?

(a)

Social web

(b)

Mobile technology

(c)

Mobile App

(d)

Both a & b.

25. Wi-Fi stands for ___________

(a)

Wireless Fidelity

(b)

wired fidelity

(c)

wired optic fibre

(d)

wireless optic fibre

26. Which one of the following will secure data on transmissions

(a)

HTTPS

(b)

HTTP

(c)

FTP

(d)

SMTP

27. How many bits are used in the IPv6 addresses?

(a)

32

(b)

64

(c)

128

(d)

16

28. Maximum characters used in the label of a node?

(a)

255

(b)

128

(c)

63

(d)

32

29. Which of the following initiates the mapping of domain name to IP address?

(a)

Zone

(b)

Domain

(c)

Resolver

(d)

Name servers

30. TLD stands for

(a)

Top Level Data

(b)

Top Logical Domain

(c)

Term Level Data

(d)

Top Level Domain

31. Assertion (A): The number of addresses used in IPv6 addressing method is 128.

(a)

A is true and R is false.

(b)

A is false and R is true.

(c)

Both A and R are correct and R is the correct explanation of A.

(d)

Both A and R are correct and R is not the correct explanation of A.

32. Which cable is used in cable TV to connect with setup box?

(a)

UTP cable

(b)

Fibre optics

(c)

Coaxial cable

(d)

USB cable

33. Which connector is used in the Ethernet cables?

(a)

RJ11

(b)

RJ21

(c)

RJ61

(d)

RJ45

34. Which wiring standard is used for connecting two computers directly?

(a)

straight Through wiring

(b)

Cross Over wiring

(c)

Rollover wiring

(d)

None

35. If the source code of a software is freely accessible by the public, then it is known as

(a)

freeware

(b)

Firmware

(c)

Open source

(d)

Public source

36. Which of the following can document every incident that happened in the simulation and are used for examination?

(a)

Net Exam

(b)

Network hardware

(c)

Trace file

(d)

Net document

37. Fill in the blanks : NS2 comprises of ______key languages?

(a)

13

(b)

3

(c)

2

(d)

4

38. Open NMS was released in _________________

(a)

1999

(b)

2000

(c)

2003

(d)

2004

39. SME stands for

(a)

Small and medium sized enterprises

(b)

Simple and medium enterprises

(c)

Sound messaging enterprises

(d)

Short messaging enterprises

40. Which of the following is not correctly matched

(a)

The First Wave of Electronic Commerce: 1985 -1990

(b)

The Second Wave of Electronic Commerce: 2004 – 2009

(c)

The Third Wave of Electronic Commerce: 2010 – Present

(d)

Dotcom burst: 2000 – 2002

41. G2G systems are classified into

(a)

Internal facing and external facing

(b)

Internet facing and Extranet facing

(c)

Internal flag and external flag

(d)

Internet flag and Extranet flag

42. Which of the following is not a category of micropayment?

(a)

(b)

Subscription to e journals

(c)

(d)

Paying for smartphone app

43. Which of the following is correctly matched

(a)

Credit Cards - pay before

(b)

Debit Cards - pay now

(c)

Stored Value Card - pay later

(d)

Smart card – pay anytime

44. Which of the following is true about Virtual payment address (VPA)

(a)

Customers can use their e-mail id as VPA

(b)

VPA does not includes numbers

(c)

VPA is a unique ID

(d)

Multiple bank accounts cannot have single VPA

45. Which of the following is not a security element involved in E-Commerce?

(a)

Authenticity

(b)

Confidentiality

(c)

Fishing

(d)

Privacy

46. Secure Electronic Transaction (SET) was developed in

(a)

1999

(b)

1996

(c)

1969

(d)

1997

47. 3-D Secure, a protocol was developed by

(a)

Visa

(b)

Master

(c)

Rupay

(d)

PayTM

48. Which of the following is an internationally recognized standard format for trade, transportation, insurance, banking and customs?

(a)

TSLFACT

(b)

SETFACT

(c)

FTPFACT

(d)

EDIFACT

49. EDI interchanges starts with _________ and ends with _________

(a)

UNA, UNZ

(b)

UNB, UNZ

(c)

UNA, UNT

(d)

UNB, UNT

50. Number of characters in an single EDIFACT messages

(a)

5

(b)

6

(c)

4

(d)

3