Service level agreements $($SLAs$)$ are often at the core of the business relationship between the provider and the customer of a service. An SLA specifies a set of service level objectives, how those objectives will be tracked and verified, and the course of action that needs to be taken along with possible consequences if service level objectives are violated. The key elements of a SLA in network management deal with fulfillment of individual customer needs such as performance, capacity and availability. These properties are referred to as the service level. Consider you are a mobile service provider $($e$.$g$.,$ Vodafone$),$ give your thoughts as to how you see the following properties? Your answer must clearly explain why it is important to maintain those properties. $(9$ marks$)$