The correct answer is: As routers move a packet from one LAN to the next, they remove both the source and the destination MAC address from the packet and replace those values with two new values. The router's MAC becomes the source address and the MAC address of the next device along the route becomes the destination address.

Here's why: Ethernet is a protocol that operates at the data link layer of the OSI model. This layer is responsible for the transmission of data between two devices on the same network. When a packet is sent from one device to another on an Ethernet network, the MAC addresses of the source and destination devices are included in the Ethernet header.

When a packet needs to be sent from one network to another, it is forwarded to a router. The router removes the original source and destination MAC addresses from the Ethernet header and replaces them with its own MAC address (as the new source) and the MAC address of the next device along the route (as the new destination). This process is repeated at each router along the path until the packet reaches its final destination.

The original source and destination MAC addresses are not preserved because they are not relevant to devices on different networks. The MAC address is only significant within the same network. On the other hand, the source and destination IP addresses are preserved and used to route the packet across networks.

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The correct answer is: As routers move a packet from one LAN to the next, they remove both the source and the destination MAC address from the packet and replace those values with two new values. The router's MAC becomes the source address and the MAC address of the next device along the route becomes the destination address.

Here's why: Ethernet is a protocol that operates at the data link layer of the OSI model. This layer is responsible for the transmission of data between two devices on the same network. When a packet is sent from one device to another on an Ethernet network, the MAC addresses of the source and destination devices are included in the Ethernet header.

When a packet needs to be sent from one network to another, it is forwarded to a router. The router removes the original source and destination MAC addresses from the Ethernet header and replaces them with its own MAC address (as the new source) and the MAC address of the next device along the route (as the new destination). This process is repeated at each router along the path until the packet reaches its final destination.

The original source and destination MAC addresses are not preserved because they are not relevant to devices on different networks. The MAC address is only significant within the same network. On the other hand, the source and destination IP addresses are preserved and used to route the packet across networks.

Knowee AI · Accepted Answer

The correct answer is: As routers move a packet from one LAN to the next, they remove both the source and the destination MAC address from the packet and replace those values with two new values. The router's MAC becomes the source address and the MAC address of the next device along the route becomes the destination address.

Here's why: Ethernet is a protocol that operates at the data link layer of the OSI model. This layer is responsible for the transmission of data between two devices on the same network. When a packet is sent from one device to another on an Ethernet network, the MAC addresses of the source and destination devices are included in the Ethernet header.

When a packet needs to be sent from one network to another, it is forwarded to a router. The router removes the original source and destination MAC addresses from the Ethernet header and replaces them with its own MAC address (as the new source) and the MAC address of the next device along the route (as the new destination). This process is repeated at each router along the path until the packet reaches its final destination.

The original source and destination MAC addresses are not preserved because they are not relevant to devices on different networks. The MAC address is only significant within the same network. On the other hand, the source and destination IP addresses are preserved and used to route the packet across networks.

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