Table 1: An Example of a Company SLA Service Levels: Capacity Performance Delay Performance Reliability Performance As available As available As available Basic Service (Best Effort) (Best Effort) (Best Effort) 1.5 Mbps As available As available Silver Service (Bidirectional) (Best Effort) (Best Effort) Refer to Table 1 to answer the following questions. (a) Discuss the elements or criterions required in an SLA. [6 Marks (b) Explain how policies help in assisting the SLA implementation. [4 Marks)