A technician is configuring a new Cisco $2960$ switch. What is the effect of issuing the S$1($config$-$if$)$# mdix auto command?O $1.$ It updates the MAC address table for the associated port. $2.$ It applies an IPv$4$ address to the virtual interface.O $3.$ It automatically adjusts the port to allow device connections to use either a straight$-$through or a crossover cable. $4.$ It permits an IPv$6$ address to be configured on a switch physical interface.O $5.$ It applies an IPv$6$ address to the virtual interface.