Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 180
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
Correct Answer:
C
Chapter: 180
Q2722:
Which protocol provides error detection at the data-link layer?
A. IP
B. TCP
C. Ethernet
D. SMTP
Correct Answer:
C
Chapter: 180
Q2723:
Fill in the blank: Wired and wireless networks both operate at the ______ layer.
A. Application
B. Transport
C. Physical
D. Data-link
Correct Answer:
C
Chapter: 180
Q2724:
Which is a disadvantage of wireless networks compared to wired?
A. Higher speed
B. Higher security
C. Higher interference
D. Lower range
Correct Answer:
C
Chapter: 180
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
Correct Answer:
C
Chapter: 180
Q2726:
The combination of physical and data-link layers is referred to in which protocol?
A. IP
B. TCP
C. SMTP
D. Ethernet
Correct Answer:
D
Chapter: 180
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
Correct Answer:
C
Chapter: 181
Q2728:
In which year did the IEEE start Project 802?
A. 1975
B. 1980
C. 1985
D. 1990
Correct Answer:
C
Chapter: 181
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
Correct Answer:
C
Chapter: 181
Q2730:
Fill in the blank: Project 802 specifies functions for the ______ and data-link layers.
A. transport
B. application
C. physical
D. network
Correct Answer:
C
Chapter: 181
Q2731:
Which two layers of the OSI model does Project 802 focus on?
A. Network and session
B. Application and transport
C. Physical and data-link
D. Session and presentation
Correct Answer:
C
Chapter: 181
Q2732:
Which of the following best describes Project 802?
A. Hardware design project
B. Software development project
C. LAN protocol standardization project
D. Email communication protocol
Correct Answer:
C
Chapter: 181
Q2733:
Which generation of Ethernet offers 1 Gbps speed?
A. Standard Ethernet
B. Fast Ethernet
C. Gigabit Ethernet
D. 10 Gigabit Ethernet
Correct Answer:
C
Chapter: 181
Q2734:
What speed is supported by 10 Gigabit Ethernet?
A. 10 Mbps
B. 100 Mbps
C. 1 Gbps
D. 10 Gbps
Correct Answer:
D
Chapter: 181
Q2735:
Fill in the blank: ______ Ethernet was the original form of Ethernet with 10 Mbps speed.
A. Standard
B. Fast
C. Gigabit
D. Turbo
Correct Answer:
A
Chapter: 181
Q2736:
What is the correct order of Ethernet evolution from oldest to newest?
A. Standard → Fast → Gigabit → 10 Gigabit
B. Standard → Gigabit → Fast → 10 Gigabit
C. Fast → Standard → Gigabit → 10 Gigabit
D. Gigabit → Standard → Fast → 10 Gigabit
Correct Answer:
A
Chapter: 181
Q2737:
Which Ethernet version is most suitable for high-speed data center environments?
A. Standard Ethernet
B. Fast Ethernet
C. Gigabit Ethernet
D. 10 Gigabit Ethernet
Correct Answer:
D
Chapter: 181
Q2738:
Which organization developed Project 802?
A. ISO
B. IEEE
C. W3C
D. IETF
Correct Answer:
B
Chapter: 181
Q2739:
Fill in the blank: The IEEE developed ______ to standardize LAN protocols.
A. Project 800
B. Project 802
C. Project 705
D. Project 999
Correct Answer:
B
Chapter: 181
Q2740:
Which of the following is NOT a generation of Ethernet?
A. Standard Ethernet
B. Fast Ethernet
C. Super Ethernet
D. Gigabit Ethernet
Correct Answer:
C