information. The terms datagram, frame, message, and packet are also used to describe logical information groupings at various layers of the OSI reference model and in various technology circles. To properly define the term segment, the context of the usage must be presented with the word. If segment is used in the context of TCP, it would be defined as a separate piece of the data. If segment is being used in the context of physical networking media in a routed network, it would be seen as one of the parts or sections of the total network. Interactive Media Activity Point and Click: Types of Segments After completing this activity, the student will understand the various meanings of the term segment. Web Links Segment http://compnetworking.about.com/library/ glossary/bldef-segment.htm

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Content Summary An understanding of the following key points should have been achieved:

• Bridging and switching evolution
• Content-addressable memory (CAM)
• Bridging latency
• Store-and-forward and cut-through switching modes
• Spanning-Tree Protocol (STP)
• Collisions, broadcasts, collision domains, and broadcast domains
• The Layer 1, 2, and 3 devices used to create collision domains and broadcast domains
• Data flow and problems with broadcasts
• Network segmentation and the devices used to create segments