Data link Layer
LLC Logical Link Control
Data Link
It's called the OSI Model... it has 7 layers. 1) Physical Layer 2) Data Link Layer 3) Network Layer 4) Transport Layer 5) Session Layer 6) Presentation Layer 7) Application Layer
A PDU (Protocol Data Unit) is defined by which layer it is in. In the physical layer and network layer, it is synonymous with the packet, in the data link layer, it is the frame. In the transport layer, it is a datagram for UDP. A datagram holds one or more PDU's, as it is the basic unit of transferring information via packet switching.
A Switch is a Layer 2 device as they operate in the data link layer
virtual switch
Switches are on the second layer of the OSI model (Data Link); they do filtering based on host MAC addresses. You may also see a third layer switch; they not only provide all switching capabilities but some layer three routing capabilities too.
No. A digital subscriber line (DSL) operates at layer 2 or the Data-link layer.
TELNET
It operates on the data link layer of the OSI model (level 2). The switch creates a separate collision domain for each port. Although some switches operate on level 3 of the model and are called multi-layer switches.
- data Link
Physical and Data-link layers.Physical being layer 1 and Data-link being layer 2.
The NIC operates on Layer 2 (Data Link Layer) of the OSI Model.
Data-link layer
Switches are commonly known as "Layer 2 (Data Link Layer)".3550 Switches: These switches are working under Layer 2 (Data Link Layer) and it is forward the packets through MAC Address, but if we convert these type of switches into Routers it will function in Layer 3 (Network Layer) of OSI model as it's forward the packets based on the IP addresses.2950 Switches: These switches are working under Layer 2 (Data Link Layer) of OSI model only and it is forward the packets through MAC Address.
Switch working in Data link layer of OSI Model which is working my MAC address it is sending receiving packets by Mac address which switch make mac tale in RAM to save all information.