多項(xiàng)選擇題Why is full-duplex Ethernet superior to its single-duplex counterpart?（）

A. It uses inexpensive hubs
B. It operates without collisions
C. It operates on switches
D. It provides faster data transfer
E. It utilizes fewer wiring pairs


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1.多項(xiàng)選擇題Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?（）

A. Full-duplex Ethernet uses CSMA/CD to prevent collisions.
B. Half-duplex Ethernet uses a loopback circuit to detect collisions.
C. A full-duplex Ethernet card allows 20Mbps for data transmission.
D. Full-duplex Ethernet makes use of two pairs of wires for data.
E. An Ethernet hub can operate both half and full duplex simultaneously.

2.單項(xiàng)選擇題On a half-duplex Ethernet LAN, two hosts attempt to send data simultaneously,resulting in a collision. Following this collision, what will the hosts do?（）

A. The destination host sends a request to the source for retransmission.
B. The jam signal indicates that the collision has been cleared.
C. The hosts will attempt to resume transmission after a time delay has expired.
D. An electrical pulse indicates that the collision has cleared.
E. The router on the segment will signal that the collision has cleared.
F. The hosts will do nothing, as the higher layers are responsible for data error correction and re-transmission.

3.多項(xiàng)選擇題What is the IEEE standard associated with Gigabit Ethernet?（）

A. 802.11
B. 802.5
C. 802.3ab
D. 802.3ae
E. 802.3z
F. 802.3u

4.多項(xiàng)選擇題Which of the following can lead to the contribution of LAN traffic congestion?（）

A. Too many hosts in a broadcast domain
B. Full duplex operation
C. Broadcast storms
D. Multicasting
E. Segmentation
F. Low bandwidth

5.多項(xiàng)選擇題You have an Ethernet network. Which of the conditions below can lead to increased congestion on your network?（）

A. The use of Full-Duplex Mode.
B. The Creation on New Collision Domains.
C. The Creation on New Broadcast Domains.
D. The Addition of Hubs to the Network.
E. The use of switches in the Network.
F. The Amount of ARP or IPX SAP Traffic.