IT250
Business Data Communications
Comprehensive Finals Review (Qns & Ans)
2025
1. Which of the following is a key component of a business data
communication system?
- A) Office decor
- B) Network infrastructure
- C) Employee uniforms
- D) Product packaging
- ANS: B) Network infrastructure
- Rationale: Network infrastructure is essential for enabling
data communication within a business.
©2024/2025
,2. In data communications, the term 'bandwidth' refers to:
- A) The physical size of a network
- B) The amount of data that can be transmitted in a given time
period
- C) The number of devices on a network
- D) The length of network cables
- ANS: B) The amount of data that can be transmitted in a
given time period
- Rationale: Bandwidth measures the capacity of a network to
transmit data.
3. Which protocol is commonly used for secure data
transmission over the internet?
- A) HTTP
- B) FTP
- C) HTTPS
- D) SMTP
- ANS: C) HTTPS
- Rationale: HTTPS encrypts data for secure transmission
over the internet.
©2024/2025
,4. The process of converting data into a secure format that
cannot be easily accessed by unauthorized users is known as:
- A) Compression
- B) Encryption
- C) Decryption
- D) Encoding
- ANS: B) Encryption
- Rationale: Encryption protects data by making it unreadable
without the proper decryption key.
5. Which of the following is NOT a type of network topology?
- A) Star
- B) Ring
- C) Tree
- D) Circle
- ANS: D) Circle
- Rationale: Circle is not a recognized network topology.
Fill-in-the-Blank Questions
6. The ________ model of data communication includes layers
such as physical, data link, network, and transport.
©2024/2025
, - ANS: OSI (Open Systems Interconnection)
- Rationale: The OSI model standardizes the functions of a
telecommunication or computing system into seven layers.
7. ________ is the process of verifying the identity of a user or
device before granting access to a network.
- ANS: Authentication
- Rationale: Authentication ensures that only authorized users
or devices can access the network.
8. In data communications, ________ refers to the delay
between the transmission and receipt of data.
- ANS: Latency
- Rationale: Latency measures the time it takes for data to
travel from the sender to the receiver.
9. A ________ is a device that connects multiple networks and
directs data packets between them.
- ANS: Router
- Rationale: Routers manage traffic between different
networks by directing data packets to their destinations.
©2024/2025
Business Data Communications
Comprehensive Finals Review (Qns & Ans)
2025
1. Which of the following is a key component of a business data
communication system?
- A) Office decor
- B) Network infrastructure
- C) Employee uniforms
- D) Product packaging
- ANS: B) Network infrastructure
- Rationale: Network infrastructure is essential for enabling
data communication within a business.
©2024/2025
,2. In data communications, the term 'bandwidth' refers to:
- A) The physical size of a network
- B) The amount of data that can be transmitted in a given time
period
- C) The number of devices on a network
- D) The length of network cables
- ANS: B) The amount of data that can be transmitted in a
given time period
- Rationale: Bandwidth measures the capacity of a network to
transmit data.
3. Which protocol is commonly used for secure data
transmission over the internet?
- A) HTTP
- B) FTP
- C) HTTPS
- D) SMTP
- ANS: C) HTTPS
- Rationale: HTTPS encrypts data for secure transmission
over the internet.
©2024/2025
,4. The process of converting data into a secure format that
cannot be easily accessed by unauthorized users is known as:
- A) Compression
- B) Encryption
- C) Decryption
- D) Encoding
- ANS: B) Encryption
- Rationale: Encryption protects data by making it unreadable
without the proper decryption key.
5. Which of the following is NOT a type of network topology?
- A) Star
- B) Ring
- C) Tree
- D) Circle
- ANS: D) Circle
- Rationale: Circle is not a recognized network topology.
Fill-in-the-Blank Questions
6. The ________ model of data communication includes layers
such as physical, data link, network, and transport.
©2024/2025
, - ANS: OSI (Open Systems Interconnection)
- Rationale: The OSI model standardizes the functions of a
telecommunication or computing system into seven layers.
7. ________ is the process of verifying the identity of a user or
device before granting access to a network.
- ANS: Authentication
- Rationale: Authentication ensures that only authorized users
or devices can access the network.
8. In data communications, ________ refers to the delay
between the transmission and receipt of data.
- ANS: Latency
- Rationale: Latency measures the time it takes for data to
travel from the sender to the receiver.
9. A ________ is a device that connects multiple networks and
directs data packets between them.
- ANS: Router
- Rationale: Routers manage traffic between different
networks by directing data packets to their destinations.
©2024/2025
