Subject

Computer and Communication Technology

Class

CBSE Class 12

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
Advertisement

 Multiple Choice QuestionsShort Answer Type

21.

Verify the following using Boolean Laws.
A’+ B’.C = A’.B’.C’+ A’.B.C’+ A’.B.C + A’.B’.C+ A.B’.C

107 Views

22.

Write the Boolean Expression for the result of the Logic Circuit as shown below:

52 Views

23.

Derive a Canonical POS expression for a Boolean function F, represented by the following truth table:

P Q R F(P, Q, R)
0 0 0 0
0 0 1 1
0 1 0 1
0 1 1 0
1 0 0 0
1 0 1 0
1 1 0 1
1 1 1 1

91 Views

24.

Reduce the following Boolean Expression to its simplest form using K-Map:
F(X,Y,Z,W)= (2,6,7,8,9,10,11,13,14,15)

73 Views

Advertisement
25.

Give two examples of PAN and LAN type of networks.

112 Views

26.

Which protocol helps us to browse through web pages using internet browsers?
Name any one internet browser.

157 Views

Advertisement

27.

Write two advantages of 4G over 3G Mobile Telecommunication Technologies in terms of speed and services?


4G -

  1. 4G network will have a higher data transfer rate reach to 100 Mbps.
  2. 4G frequency band is from 2 – 8 GHz

3G -

  1. 3G network will have a lower data transfer rate reach to 2 Mbps.
  2. 3G frequency band is from 1.8 – 2.5 GHz

141 Views

Advertisement
28.

Write two characteristics of Web 2.0.

149 Views

Advertisement
29.

What is the basic difference between Trojan Horse and Computer Worm?

99 Views

30.

Categories the following under Client side and Server Side script category?

  1. VB Sript
  2. ASP
  3. JSP
  4. JavaScript

80 Views

Advertisement