Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Multiple Choice Questions
Q2721: Which OSI layers are Ethernet concerned with?
- A: Application and network
- B: Transport and session
- C: Data-link and physical
- D: Network and transport
View Answer
C
Q2722: Which protocol provides error detection at the data-link layer?
- A: IP
- B: TCP
- C: Ethernet
- D: SMTP
View Answer
C
Q2723: Fill in the blank: Wired and wireless networks both operate at the ______ layer.
- A: Application
- B: Transport
- C: Physical
- D: Data-link
View Answer
C
Q2724: Which is a disadvantage of wireless networks compared to wired?
- A: Higher speed
- B: Higher security
- C: Higher interference
- D: Lower range
View Answer
C
Q2725: Which of the following is true about wide area networks (WANs)?
- A: They are restricted to one building
- B: They require Ethernet cables only
- C: They can be wired or wireless
- D: They do not support routing
View Answer
C
Q2726: The combination of physical and data-link layers is referred to in which protocol?
- A: IP
- B: TCP
- C: SMTP
- D: Ethernet
View Answer
D
Q2727: Fill in the blank: Local and wide area networks typically use the ______ and physical layers for transmission.
- A: application
- B: transport
- C: data-link
- D: session
View Answer
C
Q2728: In which year did the IEEE start Project 802?
- A: 1975
- B: 1980
- C: 1985
- D: 1990
View Answer
C
Q2729: What was the purpose of IEEE Project 802?
- A: To develop mobile apps
- B: To create hardware
- C: To set networking standards for LANs
- D: To build operating systems
View Answer
C
Q2730: Fill in the blank: Project 802 specifies functions for the ______ and data-link layers.
- A: transport
- B: application
- C: physical
- D: network
View Answer
C