Module 7 - Ethernet Switching

Logical link control is specified in the IEEE 802.3 standard.

The LLC sublayer adds a header and a trailer to the data.

Logical link control is implemented in software to communicate with the upper layers of the protocol suite.

The LLC sublayer is responsible for the placement and retrieval of frames on and off the media.

It is responsible for Media Access Control.

It handles communication between upper and lower layers.

It performs the function of NIC driver software.

It adds control information to network protocol layer data.

A unicast MAC address.

A broadcast MAC address.

A multicast MAC address.

A supercast MAC address.

MAC addresses are implemented by software.

A NIC only needs a MAC address if connected to a WAN.

The first three bytes are used by the vendor assigned OUI.

The ISO is responsible for MAC addresses regulations.

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.