What is one function of a Layer 2 switch?
A layer 2 switch is primarily responsible for transporting data on a physical layer and in performing error checking on each transmitted and received frame. A layer 2 switch requires MAC address of NIC on each network node to transmit data.
What is the result of a Layer 2 broadcast storm?
A broadcast storm occurs when there are so many broadcast frames caught in a Layer 2 loop that all available bandwidth is consumed. Consequently, no bandwidth is available for legitimate traffic and the network becomes unavailable for data communication. This is an effective denial of service (DoS).
What are three characteristics of layer 2 switches?
There are three distinct functions of layer 2 switching (you need to remember these!): address learning, forward/filter decisions, and loop avoidance.
What is the function of layer 2?
Layer 2 of The OSI Model: Data Link Layer provides the functional and procedural means to transfer data between network entities and to detect and possibly correct errors that may occur in the physical layer.
What is Layer 2 switching loop?
A switching loop or bridge loop occurs in computer networks when there is more than one layer 2 path between two endpoints (e.g. multiple connections between two network switches or two ports on the same switch connected to each other).
What is a characteristic of spanning tree?
It is enabled by default on Cisco switches. It has a TTL mechanism that works at Layer 2. It prevents propagation of Layer 2 broadcast frames.
What are the 2 characteristics of switches?
What are two characteristics of switches? (Choose two.)
- Switches identify the intended destination of the data that they receive.
- Switches cause more data collisions than hubs.
- Switches are capable of sending and receiving data at the same time.
- Switches send each packet to all of the computer that are connected to them.
What is the function of Layer 2?
What is Layer 2 networking?
Layer 2 is equivalent to the link layer (the lowest layer) in the TCP/IP network model. Layer2 is the network layer used to transfer data between adjacent network nodes in a wide area network or between nodes on the same local area network.
What causes layer 2 loop?
How to understand layer 2 switching loop?
To understand Layer 2 Switching loop, refer the following diagram. A Ethernet frame originating from Workstation to the File Server, first reaches the Switch 4.
What is a frame in L2 layer?
Layer2 is the network layer used to transfer data between adjacent network nodes in a wide area network or between nodes on the same local area network. A frame is a protocol data unit, the smallest unit of bits on a Layer 2 network.
What is layer 2 in TCP/IP?
Layer 2 is equivalent to the link layer (the lowest layer) in the TCP/IP network model. Layer2 is the network layer used to transfer data between adjacent network nodes in a wide area network or between nodes on the same local area network. A frame is a protocol data unit, the smallest unit of bits on a Layer 2 network.
What is layer 2 (link layer)?
Layer 2, also known as the Data Link Layer, is the second level in the seven-layer OSI reference model for network protocol design. Layer 2 is equivalent to the link layer (the lowest layer) in the TCP/IP network model.