What is the MAC address is also called the physical address of the card, right?

A MAC (Media Access Control) address is an identifier that identifies a LAN (Local Area Network) node. The physical address of a network card is usually the EPROM (a flash memory chip, usually written by a program) burned into the network card by the network card manufacturer, which stores the addresses of the computer that really identifies the computer that sent the data and the host that received the data when transmitting data.

That is to say, in the physical transmission process at the bottom of the network, the host is identified by the physical address, which is generally unique in the world. For example, the physical address of a well-known Ethernet card is an integer of 48 bits (bits), such as: 44-45-53-54-00-00, which is stored in a machine-readable way into the host interface.

The Ethernet Address Management Authority (IEEE) divides Ethernet addresses, that is, different combinations of 48 bits, into several independent contiguous address groups, and manufacturers who produce Ethernet network cards purchase one of them, and give unique addresses to Ethernet cards one by one during specific production.

Figuratively speaking, the MAC address is like the ID number on our ID card, which is globally unique.

How do I get a native Mac?

For a small number of machines, we can get the MAC address like this: in Windows 98 ME, click "Start" "Run" and enter "WinIPCFG" Enter. You can see the MAC address.

The most critical technology for a switch to be able to send packets directly to the destination node, rather than broadcasting packets to all nodes like a hub, is that the switch can identify the MAC addresses of the nodes connected to the network and put them in a place called the MAC address table. This MAC address table is stored in the cache of the switch and remembers these addresses, so that when it needs to send data to the destination address, the switch can find the node location of this MAC address in the MAC address table and send it directly to the node in this location. The so-called number of MAC addresses refers to the maximum number of MAC addresses that can be stored in the MAC address table of the switch.

However, different types of switches can support different MACs per port. Each port of the switch needs enough cache to remember these MAC addresses, so the size of the buffer determines the number of MAC addresses that the corresponding switch can remember. Usually the switch can remember 1024 MAC addresses, and the general switch can usually do this, so if the network scale is not very large, this parameter does not need to be considered too much.

Of course, the more high-end the switch, the more MAC addresses can remember, depending on the size of the network to which it is connected.

MAC address, also known as LAN address, MAC address, Ethernet address or physical address, is an address used to confirm the location of a network device. In the OSI model, the third layer network layer is responsible for IP addresses, and the second layer of data link is responsible for MAC addresses.

If a device has one or more NICs, each NIC needs to have a unique MAC address.

A MAC address is a physical address, and the two are the same concept.

The MAC address (Media Access Control Address), also known as the LAN address, Ethernet address or physical address, is an address used to confirm the location of a device on the Internet.

A MAC address is the same concept as a physical address, which is used to uniquely identify a NIC in a network.

MAC address (Media Access Control Address), also known as LAN address, Ethernet address or physical address, is an address used to confirm the location of devices on the Internet.

Yes, a MAC address is a physical address.

The physical address of the NIC is also known as the MAC address. In a computer network, the MAC address is the unique identifier of each network interface. It is a string of hexadecimal digits, usually represented as six numbers separated by hexadecimal semicolons.

For example: 01:23:

ab。The MAC address is assigned by the network interface manufacturer and is written into the network interface hardware during the production process. It is used to identify and identify network interfaces in a computer network.

In a computer network, packets are made by the MAC address of the destination host. Therefore, MAC addresses are very important for network communication bends.

Be.

The MAC address is a physical address; The full name of the MAC address is "MediaAccessControlAddress", which means access control address, which stands for access control, also known as physical address or hardware address, which provides a unique identifier for each device on the network, consisting of a 48-bit or 64-bit address.

Mac is a personal consumer computer developed by Apple since 1984 with "Macintosh", such as: iMac, Macmini, MacBookAir, MacBookPro, MacBook, MacPro and other computing families. Using a stand-alone macOS system, the latest macOS series is developed based on the NEXT system and is not compatible.

It is a complete and independent operating system.

At 1 a.m. Beijing time on June 4, 2019, the 2019 WWDC Worldwide Developers Conference was held at the San Jose Convention Center. Apple released the most powerful computer MacPro: up to 28 cores for sale at 10,000 yuan.