Class 12 Objective Questions set - 3

 

1) Which is the smallest data storage hierarchy in database file?

a) Bit

b) Character

c) Field

d) Record

2) In which type of network architecture each node has equal authority?

a) Client-server

b) Peer to Peer

c) Decentralized

d) Centralized

3) In which type of topology does every node are connected to centrally located devices called hub?

a) Bus topology

b) Star topology

c) Ring topology

d) Tree topology

4) Which is the non-primitive (derived) datatype used in JavaScript?

a) String

b) Number  

c) Boolean 

d) Array

5) Which statement is used in PHP to display any text in the screen?

a) printf(“Hello world”);

b) print “Hello world”;

c) document.write(“Hello world”);

d) echo “Hello world”;

6) What will be the output of the following program?

void main( )
{
char a[10] = “apple” , b[10] = “apple” ;
int c;
c = strcmp (a, b);
printf (“Output: %d”, c);
getch( );
}

a) 0

b) Output: 0

c) Output: 1

d) Output: -1

7) Which of the following is system design tool?

a) Context diagram

b) Data Flow Diagram (DFD)

c) ER diagram (Entity Relationship)

d) All of above

8) The process that allow hiding of data and function?

a) Inheritance

b) Encapsulation

c) Polymorphism

d) Abstraction

9) The mechanism analyzing complex and large set of data to uncover valuable information

a) AI

b) Cloud computing

c) IOT

d) Big data

Solutions of Set - 2

1. a) Bit
2. b) Peer to Peer
3. b) Star topology
4. d) Array
5. d) echo “Hello world”;
6. b) Output: 0
7. d) All of above
8. b) Encapsulation
9. d) Big data