99% of the time, yes. There is the ability on a network adapter to over-ride the mac-address that comes with it, but very rarely is that feature ever used.
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mac-address
Hardware address is the MAC address. IPv4 is the IP address. The MAC address is assigned to each network device at the time it's manufactured and does not change. The IP address is manually assigned and can be changed.
There are a couple other ways to refer to a MAC address. One could use the full name, media access control address, rather than the acronym. A MAC address could also be referred to a UAA, or universally administered address.
Your Media Acces Control(MAC) Address. http://en.wikipedia.org/wiki/MAC_address
Unique fixed hardware address that cannot be changed
In general, the MAC address is tied to a specific piece of hardware and does not change. It is possible, however, under certain circumstances to change the MAC address. MAC addresses are most often assigned by the manufacturer of a network interface card (NIC) and are stored in its hardware, the card's read-only memory, or some other firmware mechanism. If assigned by the manufacturer, a MAC address usually encodes the manufacturer's registered identification number and may be referred to as the burned-in address. It may also be known as an Ethernet hardware address (EHA), hardware address or physical address. Although intended to be a permanent and globally unique identification, it is possible to change the MAC address on most modern hardware. Changing MAC addresses is necessary in network virtualization. In this case, the MAC address of the actual NIC is hidden from the network and the network only sees the MAC assigned to the virtual NIC - which can be configured, with some finesse, to be dynamic. It can also be used in the process of exploiting security vulnerabilities. This is called MAC spoofing.
by reading the source hardware address of a frame
A "MAC ADDRESS" (Media Access Control address), or an EHA (Ethernet Hardware Address), also known simply as "hardware address".
You can enable MAC address (also know as Physical Address) filtering. MAC address filtering has two modes: 1. Allow access to listed MAC addresses 2. Deny access to listed MAC addresses.
This cannot be done, the MAC address is set in the hardware at the factory to a unique value that no other network device has anywhere in the world and cannot be changed.
The hardware address or MAC address is encoded on the NIC by the manufacturer for unique identification of the NIC. This cannot be changed.... The IPv4 address is an internet address usually assigned by a DHCP server for each computer on a network. This address can be changed.
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