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.


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1.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

2.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

3.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.

4.單項(xiàng)選擇題Which one of the following actions would actually increase congestion on an Ethernet network?（）

A. Increasing the number of collision domains.
B. Micro-segmenting the network.
C. Adding hubs for connectivity to the network.
D. Putting additional switches in the network.
E. Implementing VLANs in the network.

5.多項(xiàng)選擇題In which Spanning-Tree states does a switch port learn MAC addresses?（）

A. Blocking
B. Listening
C. Forwarding
D. Learning
E. Relaying