DATA LINK LAYER WIRED NETWORKS
WIRED LANS ETHERNET PROTOCOL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
They are only routable within the private network.
|
|
|
They are added as part of a Layer 3 PDU.
|
|
|
Each interface must be globally unique.
|
|
|
They have a 32-bit binary value.
|
Detailed explanation-1: -The data link layer uses LLC to communicate with the upper layers of the protocol suite. What statement describes a characteristic of MAC addresses? They must be globally unique. They are only routable within the private network.
Detailed explanation-2: -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-3: -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-4: -A media access control address (MAC address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth.