D, F
Explanation:
Hubs on their own don't create congestion, but the hosts that connect to them do. Generally, the addition of hubs means additional hosts connected to the hubs, all within the same collision domain. Finally, as networks become larger, more broadcast traffic such as ARP requests and IPX SAP packets get generated, which can lead to increased network congestion.

Incorrect Answers:


A. This is incorrect because the use of full duplex will increase the amount of bandwidth
while eliminating collisions at the same time.
B, C. These methods describe the use of segmentation and VLAN use, which will
decrease traffic on the individual segments.


E. This is incorrect because switches are the preferred method of reducing collision
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