Yes, ofcourse
MAC address
A host on a network is generally a device with a unique mac address (hardware address, set at the factory) It can be a PC with a network device, a network switch, a printer etc etc hosts can have an IP address mapped to their mac address's
A device or computer gets their MAC address from their Network Interface Card (or NIC). This is not something that a user is able to change (See discussion as to why you can change your MAC address). However an IP address can be statically assigned to you which means a network administrator has physically typed out what your IP address and subnet mask is. Another way to get an IP address is through Dynamic Host Configuration Protocol, or DHCP as it is most commonly known as.
There is no reason to change a MaC address, only possible answer is if you have commited a criminal offence in IT, such a hacking and want to change your MaC address. Please feel free to correct me, IT is such a large field and can change everyday
A host on a network needs to broadcast an ARP request to advertise its Mac address. The networking world is very chatty in nature and when a new network host is available it immediately broadcasts its Mac address as with a ARP message. Also when a particular network host needs to send a data packet to another network host available in the same LAN whose Mac address is unknown, the first network host sends out a ARP message requesting for the destination network hosts MAC address.
ARP
This is achieved via the ARP protocol (the Address Resolution Protocol). The host sends out a request, basically asking "who has IP address so-and-so". The request, of course, is sent as a broadcast. If a computer has the specified IP address, it will reply with its MAC address.
DHCP
The packet is sent using the IP address and MAC address of the default gateway.
The MAC address is the serial number of the network card. This number is unique in the world, and there is no need to change it.The MAC address is the serial number of the network card. This number is unique in the world, and there is no need to change it.The MAC address is the serial number of the network card. This number is unique in the world, and there is no need to change it.The MAC address is the serial number of the network card. This number is unique in the world, and there is no need to change it.
solicited-node multicast address
You can't. The MAC address is a permanant part of the device.