Based on the activities you have listed, Shaniqua is most likely configuring a switch or a network router. Switches have ports that can be identified and named, and security levels can be set for each port. Protocols can also be established and network access lists can be created on switches and routers.
Therefore, options A and B can be ruled out as hubs do not have such capabilities and configuring a firewall involves different tasks. Evaluating a port or identifying a suspicious network are also not activities that involve all the tasks mentioned in the question.