MAC provides physical addressing. The BIA (Burn In Address) which is stored in RAM when the computer boots up is added to each frame that is created as the source mac address.
But to answer your question, the MAC layer does the following: Data Encapsulation and Media Access Control.
MAC
* MAC sublayer(802.3): defines how to transmit data on physical layer * LLC sublayer(802.2): responsible for identifying different protocol logically & encapsulate them.
what are the ethernet frame parts The source and destination MAC addresses
Removes the Ethernet header and trailer
Ethernet addresses are 48 bits long - not 32 bits long like IP addresses. Different single network standards have different address lengths. Ethernet addresses are called MAC addresses for other reasons, Media Access Control.
What are two primary responsibilities of the Ethernet MAC sublayer? (Choose two.)
No, frame delimiting is a primary responsibility of the Logical Link Control sublayer of the Data Link Layer.. Data link layer exists of 2 sublayers; Media Acces control Sublayer (MAC) & Logical Link Control sublayer (LLC)
MAC sublayer is located at Data link layer.
LLC (Logical Link Control) sublayer - The LLC provides a common interface and supplies reliability andflow control services.Hope this helps,A. York
MAC
A MAC address is unique to your ethernet card. MAC addresses are used within an Ethernet network to uniquely identify the source and destination of Ethernet frames. ARP (Address Resolution Protocol) is used on IP networks to map IP addresses to MAC addresses within an Ethernet network.
* MAC sublayer(802.3): defines how to transmit data on physical layer * LLC sublayer(802.2): responsible for identifying different protocol logically & encapsulate them.
The MAC sublayer is part of Layer 2 - Data Link Layer - but it is more correct to say that the MAC address is the physical address.
IEEE 802.3 is the standard for Ethernet LAN. It is a collection of IEEE standards for physical layer and Data link layer's MAC sublayer. According to these standards, the Ethernet LAN card works. IEEE 802.4 is a Token Bus standard which was standardised by IEEE. It grants the Bus physical topology to use token messages to access physical layer.
mac protocols are medium access protocol. mac is sublayer of data link layer in osi model.it provides addressing and medium access mechanism
what are the ethernet frame parts The source and destination MAC addresses
One computer must have unique MAC addresses for each Ethernet adapter (ideally each Ethernet adapter in existence has a unique MAC address but there are some that allow manual setting of the MAC, so duplicates can exist.) If you have not changed anything from the factory settings then each network card will have a unique address!