(Download) CBSE Class-12 2016-17 Sample Paper And Marking
Scheme (Informatics Practices)
Time: 3 Hrs.
M.M. – 70
1 (a) After realizing the issues with proprietary software, Ms. Sunita has
decided to use only Open Source Software. Suggest any one suitable open source
software to her, for each of the following categories:
i. Operating System
(b) Expand the following:
(c) What is Domain Name Resolution? 1
(d) How a Phonetic text entry is different from Keymap based text entry? 1
(e) Which of the following activity can be termed as Eavesdropping:
i. If Jack sets up an unauthorized parallel telephone line to capture the
ii. If Jill has stolen his friend’s keyboard.
iii. If Martina installs some receiver hardware to capture the data while on its
iv. If Kim gets someone’s login information by casually watching what he/she is
Select the best suitable option from the following:
i. Option i only
ii. Option ii only
iii. Option i and ii both
iv. Option i and iii both
How Eavesdropping is different from snooping by mentioning any one activity
which will be termed as snooping?
(f) It’s an era of networking! Almost everyone and everything is connected
through one way or the other, hats off to the technology. We have never been so
much linked as we are today.
Daniel has just started his hands on practice of networking. Help him in the
I. He has just connected 10 computers of his resource room to establish a
network. Name the network (LAN/MAN/PAN/WAN) which will be formed. Mention any
two main benefits which Daniel could achieve by establishing a network.
II. Help him in identifying the correct topology which has following
- Its very easy to diagnose the fault in this topology.
- Failure of central hub/switch leads to failure of the entire network.
Depict the topology by drawing the diagram showing 4 interconnected computers
through central hub/switch.
2 (a) Shalini is learning Java programming language, as it allows
developers to write code that can run on any machine, regardless of architecture
or platform. Help her in finding solutions of her problems:
I. She wants to compare two integer values for equality in her java code. Out
of (=) and (= =), which operator she should use and why?
II. Help her in writing Java code to initialize two integer variables named
num1 and num2 with values 5 and 10 respectively. Increase the value of num1 by 5
and decrease the value of num2 by 5.
(b) Mr. Sahil, a programmer in a VISA processing company, has written the
jTextField2.setText(“Short Term Single Entry Visa Granted”);
jTextField2.setText(“Short Term Multiple Entry Visa Granted”);
jTextField2.setText(“Long Term Single Entry Visa Granted”);
jTextField2.setText(“Long Term Multiple Entry Visa Granted”);
No matter what value is being entered in the text field jTextField1, this
program always give a message “Invalid Entry”. Help Mr. Sahil in identifying the
problem and its reason. Also suggest him a suitable correction in the code.
(c) Realizing the importance of the Internet, Ms. Shikha a Mathematics
teacher, has decided to use Internet as a medium to teach her students
Mathematics in an interesting way.
I. She wants to design a webpage as shown below to create a mathematics
tutorial on the topic “Shapes” using HTML.