Page 57 - PYTHON-11

Ans. (a) 5
Or
(b) Mei5
33. Differentiate between list and tuple in Python. [4]
Ans.

List Tuple
It is an ordered collection that can be modified after It is an ordered collection that cannot be modified
it is created. after it is created.
Lists are defined using square brackets []. Tuples are defined using parentheses ().
Lists are used when the data needs to be changed or Tuples are used when the data should remain
updated frequently. constant and unchanged.
Lists consume more memory because they support Tuples consume less memory since their size and
dynamic changes. content cannot change.
Lists cannot be used as keys in dictionaries because Tuples can be used as dictionary keys if all their
they are mutable. elements are immutable.

For example, l = [11, 22, 35] For example, t= (17, 82, 43)
34. (a) What are the characteristics of a good algorithm. [4]
Or
(b) Mention any four precautions to stay safe online.
Ans. (a) The characteristics of a good algorithm are:
(i) Precise (ii) Unique (iii) Finite (iv) Inputs
(v) Outputs (vi) Feasible (vii) Language-independent
Or
(b) Precautions to stay safe online are as follows:
(i) Use strong passwords (ii) Avoid suspicious links
(iii) Install antivirus (iv) Use HTTPS websites
35. What is decomposition? Why is it important? [4]
Ans. Decomposition involves breaking down a complex problem or system into smaller parts that are more
manageable and easier to understand. The smaller parts can then be examined and solved, or designed
individually, as they are simpler to work with.
If a problem is not decomposed, it is much harder to solve. Dealing with many different stages all at once
is much more difficult than breaking down a problem into a number of smaller problems and solving each
problem one at a time. Breaking down the problem into smaller parts means that each smaller problem can be
examined in more detail.
Section E (2 × 5 = 10 Marks)
36. Consider the given scenario and answer the questions (a) to (e).: [5]
TechWorld Pvt. Ltd., a software development firm, recently faced a cybersecurity incident. An employee
unknowingly downloaded an attachment from a spoofed email appearing to be from the HR department. The
attachment installed malware that recorded keystrokes and sent sensitive information to cybercriminals. The IT
team acted swiftly and isolated affected systems, updated antivirus software, blocked suspicious IP addresses
and conducted an awareness training on recognizing spoofed emails.
(a) What type of malware was installed when the employee opened the malicious attachment, enabling the
attackers to secretly monitor the firm’s activity?
(b) What type of email attack involves using a fake sender address to trick recipients?
(c) What technological solution can help detect and quarantine malicious email attachments before they
reach users?
(d) What type of software is used to detect and remove malicious programs from computers?
(e) What network-level action can prevent communication with known malicious IPs?

M.6