WB Class 11 Semester 1 Model Paper Cyber Security

WEST BENGAL
MODEL QUESTION
PAPER

Class 11 Class 12
Semester I, II Semester III, IV

CLASS -XI
MODEL QUESTION.
SUBJECT: CYBER SECURITY (CBST)
SEMESTER:1
FULL MARKS: 35

1. What is a key feature that distinguishes quantum computers from classical computers?
a) Use of vacuum tubes
b) Use of transistors
c) Use of integrated circuits
d) Use of qubits and principles of quantum mechanics

2. In the context of memory hierarchy, which of the following sequences correctly represents
the order of access speed from fastest to slowest?
a) Registers, Cache, RAM, Hard Disk
b) Cache, Registers, RAM, Hard Disk
c) RAM, Cache, Registers, Hard Disk
d) Registers, RAM, Cache, Hard Disk

3. Considering the interconnections within a computer system, which bus is responsible for
carrying the addresses of data from the CPU to the memory and I/O devices?
a) Data Bus
b) Address Bus
c) Control Bus
d) System Bus

4. Which encoding scheme uses a 7-bit binary number to represent each character and is
commonly used in text files?
a) EBCDIC
b) ASCII
c) UTF-8
d) Unicode
5. Convert the binary number 110101 to its hexadecimal equivalent.
a) 35
b) 2D
c) 1A
d) 1B
6. Convert the hexadecimal number 1C3 to its decimal equivalent.
a) 451
b) 355

c) 467
d) 291

7. Which statement best differentiates data from information?
a) Data is meaningful, while information is not
b) Data is organized and processed, while information is raw and unprocessed
c) Data is raw and unprocessed, while information is processed and meaningful
d) Data and information are the same and can be used interchangeably
8. Match the roles/functions of an Operating System with their descriptions:
Role/Function Description

a) Process Management i) Handles allocation and deallocation of memory

b) Memory Management ii) Manages file storage and retrieval

c) File System iii) Coordinates execution of multiple processes

d) Device Management iv) Manages input/output operations and devices

a) a-ii, b-i, c-iii, d-iv
b) a-iii, b-ii, c-i, d-iv
c) a-iii, b-i, c-ii, d-iv
d) a-iv, b-i, c-iii, d-ii

9. Rearrange the following steps in process lifecycle:
1. Terminated
2. Ready
3. Running
4. New
5. Waiting

a) 1-2-3-4-5
b) 4-2-3-5-1
c) 3-5-4-2-1
d) 4-5-3-1-2

10. Match the DBMS concepts with their descriptions:
Concept Description

a) i) A tool used to interact with a database using
Database commands

b) SQL ii) A collection of related data organized in tables

c) Table iii) A set of records with rows and columns

d) DBMS iv) Software for managing and manipulating databases

a) a-ii, b-i, c-iii, d-iv
b) a-i, b-ii, c-iv, d-iii
c) a-ii, b-iv, c-i, d-iii
d) a-iii, b-ii, c-iv, d-i

11. What is the primary purpose of Structured Query Language (SQL) in a DBMS?
a) To define the data structures in an operating system
b) To manage the network protocols for data communication
c) To query, update, and manage relational databases
d) To design the user interface for applications
12. Column Matching: Match the Python data type with its characteristic
Data Type Characteristic

a) List i) Immutable and ordered

b) Tuple ii) Mutable and ordered

c) Set iii) Unordered and does not allow duplicates

d) Dictionary iv) Key-value pairs and unordered

a) a-ii, b-i, c-iii, d-iv
b) a-i, b-ii, c-iv, d-iii
c) a-ii, b-i, c-iii, d-iv
d) a-ii, b-iii, c-i, d-iv
13. Relationship between Statements: Determine the correct relationship between the
statements
a) In Python, while loops are used for indefinite iteration.
b) for loops are used for iterating over a sequence of elements.
Which of the following is correct?
i) Both statements are true and related.

ii) Both statements are true but not related.
iii) The first statement is true, but the second is false.
iv) The second statement is true, but the first is false.
14. Assertion (A): A flowchart is used to visualize the steps of an algorithm.
Reason (R): Flowcharts use standard symbols to represent different types of actions and
decisions.
Which of the following is true?
a) Both A and R are true, and R is the correct explanation for A.
b) Both A and R are true, but R is not the correct explanation for A.
c) A is true, but R is false.
d) A is false, but R is true
15. a) In Python, sets are used to store collections of unique items.
b) Lists in Python can contain duplicate items.
Which of the following is correct?
a) Both statements are true and related.
b) Both statements are true but not related.
c) The first statement is true, but the second is false.
d) The second statement is true, but the first is false.

16. Which Python data structure is immutable and can contain heterogeneous elements?
a) List
b) Tuple
c) Set
d) Dictionary

17. What is a defining feature of Wireless LAN (WLAN)?
a) Requires physical cables for all connections
b) Uses radio waves to connect devices wirelessly
c) Limited to connecting devices over several kilometers
d) Operates only in outdoor environments

18. Which type of cable is commonly used for high-speed data transmission in local area
networks (LANs) and offers better shielding from electromagnetic interference (EMI)?
a) Unshielded Twisted Pair (UTP)
b) Shielded Twisted Pair (STP)
c) Co-axial Cable
d) Fibre Optic Cable

19. Which network device operates at the data link layer of the OSI model and is used to reduce
network congestion by filtering and forwarding data packets between LAN segments?
a) Repeater
b) Hub
c) Bridge
d) Router

20. Match the following bandwidth and data transfer rate units with their corresponding values:
Column A (Unit) Column B (Value)

a) Hz 1. Gigabits per second

b) Kbps 2. Hertz

c) Mbps 3. Kilobits per second

d) Gbps 4. Megabits per
second
Options:
a) a-1, b-2, c-3, d-4
b) a-2, b-3, c-4, d-1
c) a-4, b-1, c-3, d-2
d) a-3, b-4, c-2, d-1

21. Statement 1: IPv4 addresses are 32 bits in length.
Statement 2: The transition to IPv6 is necessary due to the exhaustion of IPv4 addresses.

A) Statement 1 is true; Statement 2 is false.
B) Statement 1 is false; Statement 2 is true.
C) Both statements are true, and Statement 2 is a reason for Statement 1.
D) Both statements are true, and Statement 1 is a reason for Statement 2.

22. Which of the following is NOT a characteristic of TCP?
A) Connection-oriented
B) Reliable delivery
C) Flow control
D) Connectionless

23. Match the terms in Column A with their corresponding descriptions in Column B.
Column A Column B

1. IPv6 A. Translates domain names to IP addresses

2. ICMP B. A unique 48-bit identifier assigned to network devices

3. DNS C. Used to indicate network issues and diagnostics

4. MAC Address D. A 128-bit addressing system

5. Default Gateway E. Device connecting local network to external networks

A) 1 - D, 2 - C, 3 - A, 4 - B, 5 - E
B) 1 - A, 2 - D, 3 - C, 4 - B, 5 - E
C) 1 - D, 2 - B, 3 - E, 4 - C, 5 - A
D) 1 - E, 2 - A, 3 - C, 4 - B, 5 - D

24. What is the default subnet mask for a Class B IPv4 address?
A) 255.0.0.0
B) 255.255.0.0
C) 255.255.255.0
D) 255.255.255.255

25. What is the primary purpose of the Internet Control Message Protocol (ICMP)?
A) To transmit data between hosts
B) To manage error messages and operational information
C) To establish and terminate connections
D) To encrypt and decrypt data

26. Match the terms in Column A with their corresponding descriptions in Column B.
Column A Column B

1. E-mail A. The system that translates human-friendly domain names to IP
addresses

2. WWW B. A service for sending and receiving messages over the internet

3. DNS C. A global network of documents and resources, accessed via URLs

4. SMTP D. A protocol used to send e-mails

Options:
1. 1 - A, 2 - B, 3 - C, 4 - D
2. 1 - B, 2 - A, 3 - C, 4 - D

3. 1 - B, 2 - C, 3 - A, 4 - D
4. 1 - D, 2 - C, 3 - B, 4 - A

27. What is the primary function of the "Edge" layer in an IoT architecture?
A) Data storage
B) Data processing and analysis
C) Data acquisition from devices
D) User interface management
28. What type of IoT device is typically used to detect environmental changes like temperature
and humidity?
A) Actuator
B) Sensor
C) Gateway
D) Router

29. Which of the following is a lightweight messaging protocol often used in IoT applications?
A) HTTP
B) FTP
C) MQTT
D) SMTP
30. Which cloud service model provides virtualized computing resources over the internet, such
as virtual machines and storage?
A) SaaS
B) PaaS
C) IaaS
D) DaaS
31. Which cloud service model delivers software applications over the internet on a subscription
basis, typically accessed via a web browser?
A) SaaS
B) PaaS
C) IaaS
D) MaaS

32. Column Matching
Match the terms in Column A with their corresponding descriptions in Column B.
Column A Column B

1. Confidentiality A. Ensures that data is protected from unauthorized modification or
destruction.

2. Integrity B. Ensures that data is accessible and usable by authorized users when
needed.

3. Availability C. Ensures that data is only accessible to those who have the right to
view it.

Options:
1. 1 - A, 2 - B, 3 - C
2. 1 - C, 2 - A, 3 - B
3. 1 - B, 2 - C, 3 - A
4. 1 - C, 2 - B, 3 - A

33. What is the primary goal of information security?
A) To ensure data availability
B) To prevent unauthorized access and alterations
C) To increase data processing speed
D) To enhance user experience
34. What does data privacy refer to?
A) Protection against data loss
B) Control over how personal data is collected and used
C) High availability of data
D) Ensuring data integrity

35. Statement 1: Privacy refers to the control over personal data and how it is collected and
used.
Statement 2: Security involves implementing measures to protect data from unauthorized
access.

A) Statement 1 is true; Statement 2 is false.
B) Statement 1 is false; Statement 2 is true.
C) Both statements are true and describe different aspects of data protection.
D) Both statements are false

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