The Cisco IOS SLB feature is a Cisco IOS-based solution that provides server load balancing.This feature allows you to define a virtual server that represents a cluster of real servers, known as a server farm.When a client initiates a connection to the virtual server, the IOS SLB load balances the connection to a chosen real server, depending on the configured load balance algorithm or predictor.Which three implementation modes may be used to deploy SLB? （）