IT250
Business Data Communications
3.0 Credits
Midterm Exam Review (Qns & Ans)
2025
©2025
, Multiple Choice Questions
1. Question:
In corporate LANs, which network topology is most widely
deployed for its ease of management and centralized control?
- a. Bus
- b. Ring
- c. Star
- d. Mesh
ANS:
c. Star
Rationale:
The star topology features a central hub or switch through which
all nodes communicate, making administration, fault isolation, and
scalability much more manageable—key factors for business
environments.
2. Question:
In the context of secure file transfers between business partners
over the internet, which protocol is most appropriate?
- a. FTP
- b. SFTP
- c. HTTP
- d. SMTP
ANS:
b. SFTP
Rationale:
SFTP (Secure File Transfer Protocol) leverages encryption over
an SSH channel to securely transfer files. This is essential for
protecting confidential business data during transmission.
3. Question:
Quality of Service (QoS) in business data communications is
©2025
, primarily used to:
- a. Increase overall network bandwidth
- b. Guarantee a minimum level of network performance for
critical applications
- c. Encrypt data streams
- d. Fragment large data packets for transmission
ANS:
b. Guarantee a minimum level of network performance for
critical applications
Rationale:
QoS techniques differentiate and prioritize traffic to ensure that
critical applications (such as VoIP or video conferencing) receive
the necessary resources, reducing latency and jitter even under
congestion.
4. Question:
Which error-detection method is most prevalent in ensuring data
integrity in business networks?
- a. Parity checking
- b. Checksum
- c. Cyclic Redundancy Check (CRC)
- d. Hamming Code
ANS:
c. Cyclic Redundancy Check (CRC)
Rationale:
CRC is widely implemented in network protocols due to its
robustness and efficiency in detecting accidental changes to raw
data in transmission.
5. Question:
Which wireless networking standard is currently favored for high-
throughput applications in dense business environments?
- a. IEEE 802.11b
- b. IEEE 802.11g
©2025
Business Data Communications
3.0 Credits
Midterm Exam Review (Qns & Ans)
2025
©2025
, Multiple Choice Questions
1. Question:
In corporate LANs, which network topology is most widely
deployed for its ease of management and centralized control?
- a. Bus
- b. Ring
- c. Star
- d. Mesh
ANS:
c. Star
Rationale:
The star topology features a central hub or switch through which
all nodes communicate, making administration, fault isolation, and
scalability much more manageable—key factors for business
environments.
2. Question:
In the context of secure file transfers between business partners
over the internet, which protocol is most appropriate?
- a. FTP
- b. SFTP
- c. HTTP
- d. SMTP
ANS:
b. SFTP
Rationale:
SFTP (Secure File Transfer Protocol) leverages encryption over
an SSH channel to securely transfer files. This is essential for
protecting confidential business data during transmission.
3. Question:
Quality of Service (QoS) in business data communications is
©2025
, primarily used to:
- a. Increase overall network bandwidth
- b. Guarantee a minimum level of network performance for
critical applications
- c. Encrypt data streams
- d. Fragment large data packets for transmission
ANS:
b. Guarantee a minimum level of network performance for
critical applications
Rationale:
QoS techniques differentiate and prioritize traffic to ensure that
critical applications (such as VoIP or video conferencing) receive
the necessary resources, reducing latency and jitter even under
congestion.
4. Question:
Which error-detection method is most prevalent in ensuring data
integrity in business networks?
- a. Parity checking
- b. Checksum
- c. Cyclic Redundancy Check (CRC)
- d. Hamming Code
ANS:
c. Cyclic Redundancy Check (CRC)
Rationale:
CRC is widely implemented in network protocols due to its
robustness and efficiency in detecting accidental changes to raw
data in transmission.
5. Question:
Which wireless networking standard is currently favored for high-
throughput applications in dense business environments?
- a. IEEE 802.11b
- b. IEEE 802.11g
©2025
