The Engineering Department of 12 persons in a small corporation is on a regular 10Base-T Ethernet LAN hub with 16 ports. The busy group started complaining because of the slow network performance. The network was operating at 50% utilization, whereas 30% utilization is acceptable. If you are the Information Technology Engineer of the corporation and have to resolve the problem technically, 1. Describe four choices for resolving the problem, maintaining the LAN as Ethernet LAN. 2. State the advantages and disadvantages of each approach.