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(Download) CBSE Class-12 Sample Paper 2020-21: Informatics Practices

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(Download) CBSE Class-12 Sample Paper 2020-21 :Informatics Practices


Class XII INFORMATICS PRACTICES (065)

   SAMPLE QUESTION PAPER (2020 - 21)

Max Marks: 70                                                                                      Time: 3 hrs

General Instructions:

1.  This question paper contains two parts A and B. Each part is compulsory.

2.  Both Part A and Part B have choices.

3.  Part-A has 2 sections:

a.  Section – I is short answer questions, to be answered in one word or one line.

b.  Section – II has two case studies questions. Each case study has 4 case-based sub- parts. An examinee is to attempt any 4 out of the 5 subparts.

4.  Part - B is Descriptive Paper.

5.  Part- B has three sections

a. Section-I is short answer questions of 2 marks each in which two questions have internal options.
b. Section-II is long answer questions of 3 marks each in which two questions have internal options.
c. Section-III is very long answer questions of 5 marks each in which one question has question has internal option.

 

Part - A

 

 

Section - I

Attempt any 15 questions from questions 1 to 21

 

1

State whether True or False :

i. A copyright is automatically granted to authors or creators of content.

ii. In FOSS source code is usually hidden from the users.                       

1

2

Fill in the blanks :

The command  used to give a heading to a graph is            

a. plt.show()

b. plt.plot()

c. plt.xlabel()

d. plt.title()

1

3.

Write the output of the following SQL command.

select round(49.88);

a. 49.88 b. 49.8 c. 49.0 d. 50

1

4

Given a Pandas series called Sequences, the command which will display the first 4 rows is                                .

a. print(Sequences.head(4))

b. print(Sequences.Head(4))

c. print(Sequences.heads(4)

d. print(Sequences.Heads(4))

1

5

Given the following Series S1 and S2:                                     S1                                                          S2

A          10                                                 A           80

B         40                                                  B           20

C          34                                                 C           74

D          60                                                 D           90

 

Write the command to find the sum of series S1 and S2

1

6

Using Python Matplotlib                  can be used to count how many values fall into each interval

a.  line plot

b. bar graph

c.    histogram

1

7

To prevent unauthorized access to and / or from the network, a system known as                     , can be implemented by hardware and / or software.

1

8

In a DataFrame, Axis= 1 represents the                        elements.

1

9

Which of the following is not a network topology : Star, Mesh , Tree, Bug , Bus

1


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