Data Communication MCQs with Answers
Practice important Data Communication MCQs with answers and explanations.
Chapter: 189
Q2881:
Fill in the blank: Fast Ethernet requires a change in _______ to support 100 Mbps operation.
A. MAC address structure
B. cable color code
C. physical layer
D. application layer
Correct Answer:
C
Chapter: 189
Q2882:
Which of the following Fast Ethernet implementations uses fiber-optic cable?
A. 100Base-TX
B. 100Base-T4
C. 100Base-FX
D. 100Base-VG
Correct Answer:
C
Chapter: 189
Q2883:
Which one of these was not a major design goal of Fast Ethernet?
A. Speed increase
B. Backward compatibility
C. New MAC format
D. Retain frame structure
Correct Answer:
C
Chapter: 190
Q2884:
What is the data rate of Gigabit Ethernet as per IEEE 802.3z?
A. 10 Mbps
B. 100 Mbps
C. 1 Gbps
D. 10 Gbps
Correct Answer:
C
Chapter: 190
Q2885:
Fill in the blank: Gigabit Ethernet uses the same _______ as Standard and Fast Ethernet.
A. IP header
B. 48-bit address
C. Subnets
D. Port number
Correct Answer:
B
Chapter: 190
Q2886:
One of the goals of Gigabit Ethernet was to keep the same _______.
A. MAC address only
B. frame format only
C. minimum and maximum frame lengths
D. all of the above
Correct Answer:
D
Chapter: 190
Q2887:
Which access methods are supported by Gigabit Ethernet?
A. Full-duplex only
B. Half-duplex only
C. Half and Full-duplex
D. CSMA/CD only
Correct Answer:
C
Chapter: 190
Q2888:
What made changes to the MAC sublayer necessary in Gigabit Ethernet?
A. Higher cable cost
B. Increased transmission rate to 1 Gbps
C. Shorter packets
D. Wireless access
Correct Answer:
B
Chapter: 190
Q2889:
What is one major difference in the physical layer of Gigabit Ethernet compared to Fast Ethernet?
A. Simpler encoding
B. Lower frequency
C. More complex design
D. Slower data transfer
Correct Answer:
C
Chapter: 190
Q2890:
Gigabit Ethernet supports which of the following?
A. 10 Mbps
B. 1 Gbps
C. 100 Mbps
D. 40 Gbps
Correct Answer:
B
Chapter: 190
Q2891:
What is the main reason that CSMA/CD is not needed in 10-Gigabit Ethernet?
A. It uses copper cables
B. It operates in half-duplex
C. It has limited distance
D. It uses only full-duplex
Correct Answer:
D
Chapter: 190
Q2892:
10-Gigabit Ethernet was introduced under which IEEE standard?
A. 802.3u
B. 802.3z
C. 802.3ae
D. 802.11g
Correct Answer:
C
Chapter: 190
Q2893:
Fill in the blank: 10-Gigabit Ethernet can be used in LANs and _______.
A. PANs
B. MANs
C. WANs
D. VPNs
Correct Answer:
B
Chapter: 190
Q2894:
In Gigabit Ethernet, encoding is handled in the _______ layer.
A. MAC
B. Transport
C. Physical
D. Session
Correct Answer:
C
Chapter: 190
Q2895:
Which mode is exclusive to 10-Gigabit Ethernet?
A. Half-duplex
B. Full-duplex
C. Asynchronous
D. Simplex
Correct Answer:
B
Chapter: 190
Q2896:
Which of the following is NOT a goal of Gigabit Ethernet?
A. Upgrade to 1 Gbps
B. Change 48-bit address
C. Keep compatibility
D. Use same frame format
Correct Answer:
B
Chapter: 190
Q2897:
Fill in the blank: The IEEE standard for Gigabit Ethernet is _______.
A. 802.3u
B. 802.3z
C. 802.11b
D. 802.3ae
Correct Answer:
B
Chapter: 190
Q2898:
What is the role of encoding in Gigabit Ethernet?
A. Error correction only
B. Reduce cable cost
C. Adapt signals for high-speed transmission
D. Support wireless traffic
Correct Answer:
C
Chapter: 190
Q2899:
Which is a key implementation feature of 10-Gigabit Ethernet?
A. CSMA/CD
B. Full-duplex only
C. 48-bit to 64-bit address conversion
D. Half-duplex only
Correct Answer:
B
Chapter: 190
Q2900:
Gigabit Ethernet maintains the same frame length range as:
A. Wi-Fi
B. PPP
C. Ethernet
D. ATM
Correct Answer:
C