What is a valid MAC address?

A valid MAC address must satisfy the following conditions: It must contain 12 hexadecimal digits. One way to represent them is to form six pairs of the characters separated with a hyphen (-) or colon(:). For example, 01-23-45-67-89-AB is a valid MAC address.

How many digits is a MAC address?

A MAC address consists of 48 bits, usually represented as a string of 12 hexadecimal digits (0 to 9, a to f, or A to F); these are often grouped into pairs separated by colons or dashes. For example, the MAC address 001B638445E6 may be given as 00:1b:63:84:45:e6 or as 00-1B-63-84-45-E6.

What do MAC addresses look like?

The Physical Address is your MAC address; it will look like 00-15-E9-2B-99-3C. You will have a physical address for each network connection that you have.

What is Unicast MAC address?

A unicast MAC address is a unique address that is used when a frame is sent from a single transmitting device to a single destination device. In Figure 7-11, the destination MAC address and the destination IP address are both unicast.

How do you identify MAC address?

To find the MAC address on your Windows computer: Click on the Start menu in the bottom-left corner of your computer. Type ipconfig /all (note the space between the g and /). The MAC address is listed as series of 12 digits, listed as the Physical Address (00:1A:C2:7B:00:47, for example).

What are two characteristics of a MAC address?

What are two characteristics of Ethernet MAC addresses? (Choose two.) They are globally unique. They are routable on the Internet. They are expressed as 12 hexadecimal digits. MAC addresses use a flexible hierarchical structure. MAC addresses must be unique for both Ethernet and serial interfaces on a device.

What exactly is the point of a MAC address?

Network switches store a list of MAC addresses seen at every port and only forward packets to the ports that need to see the packet. Wireless access points often use MAC addresses for access control. DHCP servers use the MAC address to identify devices and give some devices fixed IP addresses.

What is the exact use of a MAC address?

Uses of MAC address : Useful in places where IP address change frequently. Helps network admin. to get information regarding network traffic. Helps us to configure which computers can be connected to our computers. By this way we can filter potential spam/virus attacks. Helps in uniquely identifying computers from other computers around the world.