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Does hub has Mac address?
No. Hubs simply repeat all the Ethernet frames on all ports and do not interfere with the source or destination MAC addresses and as such do not need their own MAC address.
What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?
On a hub network:The host (PC-A) computer sends the frame out its Network Interface Card (NIC) to Fast-Ethernet 0/1 (F0/1) on the HUB. The HUB then sends that frame out every interface (except incoming interface). If the destination MAC address is aaa.bbb.ccc, and PC-B has MAC address aaa.aaa.bbb, then PC-B's NIC will ignore the frame and nothing else will happen.
A device receives an Ethernet frame and recognizes the MAC address as its own. What does the device do to the message to get to the encapsulated data?
Removes the Ethernet header and trailer
What do the first three octets mean in mac address?
The UAA, or Universally Administered Address, is the most commonly used type of MAC address. This address is assigned to the network adapter when it is manufactured. The first three octets define the manufacturer, while the second three octets vary and identify the individual adapter. All network adapter manufacturers have their own code, called the Organizationally Unique Identifier (OUI).
What security advantage occurs from Packaet's containing the source NIC address and not just the destination NIC address?
The message must travel from your computer to your router. Every computer connected to a network has a network interface card (NIC) with a unique physical address, called a MAC address (for Media Access Control). At the data link level, two more headers are added, one for your computer's NIC address (the source MAC) and one for your router's NIC address. A data link layer structure with destination MAC, source MAC, and data is called a frame. Every NIC selects from the network those frames with its own address as a destination address. The data link layer adds the structure necessary for data to get from your computer to another computer (a router is just a dedicated computer) on your network. Data Link Layer Transformation.
Does each port of swith have it own mac address?
No. The switch itself will only have one MAC address. Only routers use different MAC addresses for each port.
Does hub has Mac address?
No. Hubs simply repeat all the Ethernet frames on all ports and do not interfere with the source or destination MAC addresses and as such do not need their own MAC address.
How can you got the Mac Address?
Any network card has its own MAC address, so it doesn't require an extraordinary effort to have your own MAC address. The MAC address is the serial number of the network card.Any network card has its own MAC address, so it doesn't require an extraordinary effort to have your own MAC address. The MAC address is the serial number of the network card.Any network card has its own MAC address, so it doesn't require an extraordinary effort to have your own MAC address. The MAC address is the serial number of the network card.Any network card has its own MAC address, so it doesn't require an extraordinary effort to have your own MAC address. The MAC address is the serial number of the network card.
What is an Active Directory Mac address?
The MAC address is the LAN/Ethernet card address there is no specfic Mac address for active directoy. Each server/PC in the world has its own unique mac address.
Write short notes on how switches learn MAC addresses and they use MAc addresses to forward?
When you connect your computer to a switch, it will automatically detect your computer's settings and will also gather system information, part of this information collected is your MAC address. Every network interface card (NIC) has it's own unique MAC address, and most computers these days have NIC's already installed.
How does a cisco router recognize its own traffic?
Source or Destination MAC address
What is the Mac address used for?
The address for a device as it is identified at the Media Access Control (MAC) layer in the Ethernet networkarchitecture. The MAC address is usually stored in ROM on the network adapter card and is unique.When reaching another host on your own network, or when accessing a router on your network to reach another network, The IP address (4 numbers separate by dots) is converted to the MAC address of the host or router on your network. When the message or packet(S) are sent out, the device with that destination MAC address recognizes that it was meant to receive the message and accepts it. Any other device on the network that can see the transmission is expected to ignore it.An exception is a device or router that is configured to be "promiscuous". Such a machine will also accept and process all transmissions even if meant for another device. This is often used for network monitoring/logging, maintenance, and problem resolution.Although the MAC address is hard coded into the network interface or device, in almost all cases it can be changed. An example for this is when an ethernet network is used with the DECnet protocol. DECnet can be used instead of or togetherwith TCP/IP (or Netware or NetBEUI). The DECnet protocol requires that the MAC address be changed to incorporate the DECnet address as part of the MA address.A MAC address is the serial number of a network card - or other equipment that connects to a network, usually an Ethernet network. In an Ethernet network, the MAC address is used as source and destination address, to know who is communicating with whom. For example, a switch uses the MAC address to forward a frame (a pieces of data) to the correct computer.
What happens when a host station receives a frame that contains its own MAC address in the destination field?
ignored
Why does wireshark shows the actual MAC address for the local host but not for the remote host?
Wireshark displays the actual MAC address of the local host because it is directly connected to the network and can access its own hardware address. In contrast, for remote hosts, Wireshark typically shows the MAC address of the last device that forwarded the packet, such as a router, instead of the actual MAC address of the remote host. This is due to the way Ethernet and IP networking function, where MAC addresses are only visible within the same local network segment.
What is Mac address filtering?
Media Access Control (MAC) address filtering is a little different from WEP or WPA. It doesn't use a password to authenticate users - it uses a computer's physical hardware. Each computer has its own unique MAC address. MAC address filtering allows only machines with specific MAC address access the network. You must specify which addresses are allowed when you set up your router. This method is very secure, but if you buy a new computer or if visitors to your home want to use your network, you'll need to add the new machines' MAC addresses to the list of approved addresses.
Why are two mac addresses associated with one port?
Two MAC addresses can be associated with one port in scenarios involving features like VLANs (Virtual Local Area Networks) or link aggregation. In VLAN configurations, a switch port can support multiple virtual networks, each with its own MAC address for devices connected to that VLAN. Additionally, in link aggregation, multiple physical connections are combined into a single logical link, allowing devices to share a single MAC address across those connections for redundancy and increased bandwidth.
What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?
On a hub network:The host (PC-A) computer sends the frame out its Network Interface Card (NIC) to Fast-Ethernet 0/1 (F0/1) on the HUB. The HUB then sends that frame out every interface (except incoming interface). If the destination MAC address is aaa.bbb.ccc, and PC-B has MAC address aaa.aaa.bbb, then PC-B's NIC will ignore the frame and nothing else will happen.
