(Download) CBSE Class-12 Sample Paper 2020-21:Computer Science
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(Download) CBSE Class-12 Sample Paper 2020-21 :Computer Science
Class: XII Session: 2020-21
Computer Science (083) S
ample Question Paper (Theory)
Maximum Marks: 70 Time Allowed: 3 hours
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 question 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 internal option.
6. All programming questions are to be answered using Python Language only
Select the most appropriate option out of the options given for each question. Attempt any 15 questions from question no 1 to 21.
Find the invalid identifier from the following
a) MyName b) True c) 2ndName d) My_Name
Given the lists L=[1,3,6,82,5,7,11,92] , write the output of print(L[2:5])
Write the full form of CSV.
Identify the valid arithmetic operator in Python from the following.
a) ? b) < c) ** d) and
Suppose a tuple T is declared as T = (10, 12, 43, 39), which of the following is
b) T = -29
Write a statement in Python to declare a dictionary whose keys are 1, 2, 3
and values are Monday, Tuesday and Wednesday respectively.
A tuple is declared as
T = (2,5,6,9,8)
What will be the value of sum(T)?
Name the built-in mathematical function / method that is used to return an absolute value of a number.
Name the protocol that is used to send emails.
Your friend Ranjana complaints that somebody has created a fake profile on
Facebook and defaming her character with abusive comments and pictures. Identify the type of cybercrime for these situations.
In SQL, name the clause that is used to display the tuples in ascending order
of an attribute.
In SQL, what is the use of IS NULL operator?
Write any one aggregate function used in SQL.
Which of the following is a DDL command?
a) SELECT b) ALTER c) INSERT d) UPDATE
Name The transmission media best suitable for connecting to hilly areas.