Which command is used to save the configuration in a Cisco router? save config wr mem mem wr copy config $251$ point What is the command to configure the prompt on a Cisco IOS router. Select one answer. Switch$($config$)$#hostname SWITCH$-$S$1$ Switch$($config$-$if$)$#hostname SWITCH$-$S$1$ Switch#hostname SWITCH$-$S$1$ Switch$>$enable $261$ point What is a MAC address? Select one answer. MAC address is used for Media Access Control address. This address of the device is used as identification of media access control layer in the architecture of the network. It is usually stored in physical ethernet card and it is unique for every device. MAC address is a logical address configured by a network admin to identify a network device and used in communication at the network layer. MAC address and IP address are the same. MAC address is the identifier for an application that is used to determine the route of a packet.