Logical Topology

Correct Answer: A combination of point-to-multipoint and point-to-point

A combination of point-to-multipoint and point-to-point topology would work efficiently in this company's network structure. In each branch of the tree topology, implementing a point-to-multipoint network would enable all devices to communicate independently with each other - it's like placing a 'star' at the end of each 'branch'. Communication between branches would, however, require a point-to-point connection that leads back to a central switch. This means each branch is independently connected to the centralized switch, allowing inter-branch communication. The Full mesh topology, Token passing, and CSMA/CA would not meet this company's network requirements. Full mesh topology requires every device to be interconnected, which raises cost and complexity of management, and is not necessary for this case. Token passing and CSMA/CA are protocols rather than network topologies, which are not relevant to the question asked.

Correct Answer: Point-to-multipoint

In a point-to-multipoint topology, a single node (the hub) is directly linked to each of the other nodes on the network. This allows Jane to have one device communicating directly with the central hub, with the rest communicating through it, as she wanted. A point-to-point logical topology is incorrect because in such a setup, two nodes are directly connected, and no central hub is used. A bus logical topology is also incorrect because in a bus topology, each device is connected to a single cable that runs to every device. This could potentially result in more than one device communicating directly with the central line, which is opposite to what Jane wants. Lastly, a mesh topology is incorrect as well because in a mesh setup, devices are connected with many redundant interconnections between network nodes. In a fully connected mesh topology, each node is connected to every other node, not only through a central hub.

Correct Answer: Token passing

Token passing is the logical network topology that the company should implement to minimize data collisions. Token Passing employs a 'token' or special types of frames that are passed around the network. Only the device that holds the token can send a data packet onto the network, effectively avoiding collisions because the devices do not 'compete' to send information. In contrast, CSMA/CD (Carrier Sense Multiple Access with Collision Detection) and CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) are methods to handle potential collisions, not prevent them in the first place. CSMA/CD detects collisions and then resolves them by stopping transmission and sending a jam signal, and CSMA/CA tries to avoid potential collisions by waiting if the channel is sensed to be 'busy'. The Broadcast method would not help reduce collisions, instead it might increase it, as it involves transmitting the same data to all nodes in a network at once.