1. Ethernet WANs have gained in popularity and are now commonly being used to replace the traditional serial point-to-point, Frame Relay and ATM WAN links. i. List three [3] Ethernet WAN services.[3 marks] ii. Explain the success factor of Multiprotocol Label Switching [MPLS). [5 marks] 2. Each broadband solution has advantages and disadvantages. If there are multiple broadband solutions available, a cost-versus benefit analysis should be performed to determine the best solution. Explain three (3] factors to consider in consider in this cost-vs-benefit analysis. [6 marks]