Table of Contents
- 1 Which of the following statements describes how the switch works when the MAC address table is full?
- 2 Which statement is true of a MAC address?
- 3 How does switch learn MAC address when PC1 wants to communicate with PC2 and pc3?
- 4 What statements best describes a characteristic of a MAC address?
- 5 When a switch receives a frame for a known destination MAC address how is the frame handled?
- 6 What information does an Ethernet switch examine and use to forward frame?
Which of the following statements describes how the switch works when the MAC address table is full?
When the MAC address table is full, the switch treats the frame as an unknown unicast and begins to flood all incoming traffic to all ports only within the local VLAN.
Which statement is true of a MAC address?
Explanation:A MAC address is composed of 6 bytes. The first 3 bytes are used for vendor identification and the last 3 bytes must be assigned a unique value within the same OUI. MAC addresses are implemented in hardware. A NIC needs a MAC address to communicate over the LAN.
When building the MAC address the switch examines the source MAC address and compares it to the MAC address table?
The switch examines the source MAC address and compares it to the MAC address table. If the address is not in the MAC address table, it associates the source MAC address of PC 1 with the ingress port (Port 1) in the MAC address table (Figure 1-14).
When a switch receives an Ethernet frame and the destination MAC address of that frame is not in its MAC address table the switch will?
unknown unicast
If the destination MAC address is not in the table, the switch forwards the frame out all ports except the incoming port. This is called an unknown unicast. As shown in Figure 7-16, the switch does not have the destination MAC address in its table for PC-D, so it sends the frame out all ports except port 1.
How does switch learn MAC address when PC1 wants to communicate with PC2 and pc3?
Although PC1 knows the IP address of PC2 as they are communicating for the first time, it doesn’t know the MAC (hardware) Address of the receipt host. Thus PC1 uses an ARP to discover the MAC address of PC2. The switch sends the ARP request to all the ports excluding the port on which PC1 is connected to.
What statements best describes a characteristic of a MAC address?
What statement describes a characteristic of MAC addresses? They must be globally unique. They are only routable within the private network. They are added as part of a Layer 3 PDU.
When a switch is building its MAC address table what address information does the switch record in the table when it receives a frame from a port?
Explanation:A switch builds a MAC address table by inspecting incoming Layer 2 frames and recording the source MAC address found in the frame header. The discovered and recorded MAC address is then associated with the port used to receive the frame.
Which switch is type of network switch and utilizes MAC address?
A layer 2 switch is a type of network switch or device that works on the data link layer and utilizes MAC Address to determine the path through where the frames are to be forwarded. It uses hardware-based switching techniques to connect and transmit data in a local area network (LAN).
When a switch receives a frame for a known destination MAC address how is the frame handled?
When a switch receives a frame from a destination it does not know, it inserts the source mac address into its CAM table (a table which maps mac addresses to ports) and forwards the frame to all ports. The process of broadcasting a unicast frame is called unknown unicast.
What information does an Ethernet switch examine and use to forward frame?
The switch makes its forwarding decisions based solely on the Layer 2 Ethernet MAC addresses. An Ethernet switch examines its MAC address table to make a forwarding decision for each frame. In contrast, a legacy Ethernet hub repeats bits out all ports except the incoming port.
Does the switch need an IP address for PC1 to communicate with PC2?
PC1 and PC2 reside on the same IP network as well as on the same VLAN. So a default gateway would not be required. This is because , to communicate between VLAN’s , a layer 3 or gateway device would be required.
What is a switch used for in networking?
A network switch forwards data packets between devices. Switches send packets directly to devices, rather than sending them to networks like a router does.