COMPUTER SCIENCE AND ENGINEERING
COMPUTER NETWORKING
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
A set of integers that identify a computer on a network
|
|
|
A unique identifier for all computers on a network
|
|
|
A unique identifier for all ports on a network
|
|
|
A unique identifier for all devices connected to a network
|
Detailed explanation-1: -A MAC address (media access control address) is a 12-digit hexadecimal number assigned to each device connected to the network. Primarily specified as a unique identifier during device manufacturing, the MAC address is often found on a device’s network interface card (NIC).
Detailed explanation-2: -The MAC is globally unique, so two devices can’t have the same MAC address. Each device’s MAC is represented in a hexadecimal format on each device, like this: 00:0a:45:2e:52:28. It’s a 12-digit number and is 48 bits long, also called a 6-byte hexadecimal number.
Detailed explanation-3: -A MAC (Media Access Control) address, sometimes referred to as a hardware or physical address, is a unique, 12-character alphanumeric attribute that is used to identify individual electronic devices on a network. An example of a MAC address is: 00-B0-D0-63-C2-26.
Detailed explanation-4: -Each MAC address is unique to the network card installed on a device, but the number of device-identifying bits is limited, which means manufacturers do reuse them. Each manufacturer has about 1.68 million available addresses, so when it burns a device with a MAC address ending in FF-FF-FF, it starts again at 00-00-00.
Detailed explanation-5: -The MAC address is an important element of computer networking. MAC addresses uniquely identify a computer on the LAN. MAC is an essential component required for network protocols like TCP/IP to function. Computer operating systems and broadband routers support viewing and sometimes changing MAC addresses.