• List the services carried out by Layer 2.
• Why is Layer 2 divided into sublayers? List the sublayers and differentiate between them.
• Define the following terms: media access control, encapsulation, topology, and collision.
• Differentiate between a logical and physical topology.
• Do networks usually have the same type of topology logically and physically?
• What type of topology is considered, when accessing the media?
• What happens at each hop along a path?
• Does the same access control method apply to all media?
• What types of organizations create Data Link Layer standards?
• Explain what a router does, at each hop along a path.
• Be able to list and differentiate between various LAN and WAN topologies.
• What are the primary LAN topologies used today?
• Differentiate between full-duplex and half-duplex communication. Know what types of devices make use of each.
• Differentiate between controlled access and contention-based access by explaining how each works. Explain advantages and disadvantages of each.
• Which WAN topology requires the least amount of media access control?
• Know how CSMA/CD and CSMA/CA work. Give an example of a type a network that uses each method.
• Explain the following parts of a frame and know where they appear (i.e., header, data, trailer): frame start, addresses, error detection, and frame stop.
• Explain scenarios in which each of the contention based access methods would fail and a collision would occur.
• T/F: The frames of all types of media are the same. Explain your answer.
• Differentiate between and IP address and a MAC address.
• What is another name for a MAC address?