Contents
- 1 What is the Layer 2 broadcast address?
- 2 What is an example of a Layer 2 address?
- 3 What is a frame in layer 2?
- 4 Can a layer 2 switch do VLANs?
- 5 What are two examples of the cut through switching method?
- 6 Why does a layer 2 switch need an IP address?
- 7 When does a NIC drop a layer 1 packet?
- 8 What happens when an Ethernet frame is dropped?
- 9 How are broadcast frames flooded to all segments?
What is the Layer 2 broadcast address?
Layer 2 broadcast traffic reaches all nodes in a “broadcast domain.” Devices on the same LAN (or VLAN) are in the same broadcast domain. The Ethernet broadcast address is MAC address “FF:FF:FF:FF:FF:FF”: traffic sent to that address on an Ethernet switch is received by all connected nodes.
What is an example of a Layer 2 address?
The MAC address is a layer 2 (data link) address. The layer 3 address is a logical address. It will pertain to a single protocol (such as IP, IPX, or Appletalk). The layer 2 address is a physical address.
What information is used to forward frames in a layer 2 switch?
To forward the frame, the switch examines the destination MAC address and compares it to addresses found in the MAC address table. If the address is in the table, the frame is forwarded out the port associated with the MAC address in the table.
What is a frame in layer 2?
It is a container for data with a source and destination address to deliver information, called the payload, between two locations on the same network. Frames are generated at Layer 2 of the TCP/IP stack by the network interface device with a payload size that depends on the type of data being transmitted.
Can a layer 2 switch do VLANs?
VLANs provide support for a Layer 2 trunk port. A Layer 2 trunk interface enables you to configure a single logical interface to represent multiple VLANs on a physical interface. You can configure a set of VLANs and VLAN identifiers that are automatically associated with one or more Layer 2 trunk interfaces.
Where are IPv4 address to Layer 2?
Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer? Answers Explanation & Hints: The ARP cache is used to store IPv4 addresses and the Ethernet physical addresses or MAC addresses to which the IPv4 addresses are mapped.
What are two examples of the cut through switching method?
What are two examples of the cut-through switching method? (Choose two.)
- store-and-forward switching.
- fast-forward switching.
- CRC switching.
- fragment-free switching.
- QOS switching. Explanation: Store-and forward switching accepts the entire frame and performs error checking using CRC before forwarding the frame.
Why does a layer 2 switch need an IP address?
Explanation:A switch, as a Layer 2 device, does not need an IP address to transmit frames to attached devices. The IP address must be applied to a virtual interface rather than to a physical interface. …
Is a Layer 2 switch managed?
A Layer 2 managed switch forwards traffic between network hosts such as a server and a client PC within the same subnet. The traffic-forwarding decision is based on its MAC address table entries.
When does a NIC drop a layer 1 packet?
It’s my understanding that if a network interface card (NIC) receives a Layer 1 packet, it will extract the Layer 2 frame from it, checks its destination MAC address, and if it is not addressed to it (or it’s not a broadcast or multicast), it will drop it. Is my understanding correct?
What happens when an Ethernet frame is dropped?
The frame is dropped.* The frame is returned to the originating network device. The frame is broadcast to all other devices on the same network. The frame is sent to the default gateway. 2. What are the two sizes (minimum and maximum) of an Ethernet frame? (Choose two.) 3. What statement describes Ethernet?
How does host D respond to a layer 2 broadcast?
Every other host connected to the switch receives the broadcast and host D responds with its MAC address. Whenever the destination MAC address is not contained within the ARP table of the originating host, the host (host A in this example) will send a Layer 2 broadcast that has a destination MAC address of FF:FF:FF:FF:FF:FF.
How are broadcast frames flooded to all segments?
Broadcast frames are flooded to all ports and all segments, thereby requiring every device to read and process the frame. The Ethernet switches of Figures 7.8and 7.9, without VLAN configurations, function in the same manner as the previously mentioned hub and bridges when they deal with broadcasts.