Page 545 - Computer Science V2.0 Class 11

17 and 18 are ASSERTION AND REASONING based questions. Mark the correct choice as
(A) Both (A) and (R) are true and (R) is the correct explanation (A)

(B) Both (A) and (R) are true and R is not the correct explanation (A)
(C) (A) is True but (R) is False

(D) (A) is false but (R) is True
17. Assertion: Phishing is a type of deception.
Reason: Phishing is a practice of attempting to get sensitive information by taking the user to authentic looking
website.
18. Assertion: In Python, a variable can hold values of different types at different times.

Reason: A variable’s data type once assigned ,remains fixed throughout the program.

Section-B
19. What is the difference between Interactive mode and Script Mode in Python?

20. What is meant by derived logical gates?
21. Differentiate between system software and an application software.
OR
Define the concept of cloud computing.
22. Write a program that accepts a statement with each word separated by a space as input, replaces each blank with
a hyphen, and then prints the updated text.
23. What is difference between dictionaries and lists?

24. What is the importance of the IT Act 2000?
O R
Write a short note of e-Waste.
25. List any two social media etiquette guidelines for proper online behavior.

Section-C

26. Explain the basic architecture of computer system.
27. Define the following terms:
(i) Degree of a relation
(ii) Cardinality of a relation
OR
Define operators in Python. List any two types of operators.

28. Write a program to find and display the sum of the factorial of all the natural numbers from 1 to n.
O R
Write a program to display the first ten numbers of the Fibonacci series 0,1,2,3,………………..
29. What is difference between del keyword and pop() function?

30. Differentiate between Copyright and Patent with the help of suitable examples.
Section-D

31. Write a program that accepts two numbers from the user and displays their greater common divisor (GCD) and
least common multiple (LCM).
O R

Practice Paper 2 531