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Questions and Answers
When devices are on the same network, the source and destination will have different network portions in the IP address.
When devices are on the same network, the source and destination will have different network portions in the IP address.
False
MAC addresses are physically embedded into the Ethernet NIC.
MAC addresses are physically embedded into the Ethernet NIC.
True
The Destination MAC address will be on a different link than the source, even if the ultimate destination is remote.
The Destination MAC address will be on a different link than the source, even if the ultimate destination is remote.
False
When the source and destination have different network portions, this means they are on different networks.
When the source and destination have different network portions, this means they are on different networks.
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When the final destination is remote, Layer 3 provides Layer 2 with the local default gateway IP address.
When the final destination is remote, Layer 3 provides Layer 2 with the local default gateway IP address.
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The MAC addressing for the first segment is: Source – (PC1 NIC) sends frame Destination – (First Router- DGW interface) receives frame.
The MAC addressing for the first segment is: Source – (PC1 NIC) sends frame Destination – (First Router- DGW interface) receives frame.
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In the second hop, the MAC addressing involves the Source as (Second Router- exit interface) and the Destination as (First Router).
In the second hop, the MAC addressing involves the Source as (Second Router- exit interface) and the Destination as (First Router).
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The L3 IP addressing changes from segment to segment like the L2 MAC addressing.
The L3 IP addressing changes from segment to segment like the L2 MAC addressing.
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The Data Link Layer is responsible for providing error-free transmission of data frames over the network.
The Data Link Layer is responsible for providing error-free transmission of data frames over the network.
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Addressing in different IP networks can lead to changes in both L2 MAC addressing and L3 IP addressing.
Addressing in different IP networks can lead to changes in both L2 MAC addressing and L3 IP addressing.
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The data link layer is responsible for delivering the IP packet from the original source to the final destination.
The data link layer is responsible for delivering the IP packet from the original source to the final destination.
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An IP address consists of two parts: network portion and host portion.
An IP address consists of two parts: network portion and host portion.
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The left-most part of an IP address indicates the host portion.
The left-most part of an IP address indicates the host portion.
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MAC addresses are used by the data link layer to deliver data between devices on the same network.
MAC addresses are used by the data link layer to deliver data between devices on the same network.
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The data link layer passes on the IP packet to the next level for processing.
The data link layer passes on the IP packet to the next level for processing.
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Study Notes
IP Addressing and MAC Addressing
- When devices are on the same network, the source and destination IP addresses have different network portions.
- MAC addresses are physically embedded into the Ethernet Network Interface Card (NIC).
MAC Addressing in Routing
- When the source and destination have different network portions, they are on different networks.
- When the final destination is remote, Layer 3 provides Layer 2 with the local default gateway IP address.
- The MAC addressing for the first segment involves:
- Source: PC1 NIC
- Destination: First Router's Default Gateway (DGW) interface
- In the second hop:
- Source: Second Router's exit interface
- Destination: First Router
Data Link Layer Responsibilities
- The Data Link Layer is responsible for providing error-free transmission of data frames over the network.
- The Data Link Layer delivers the IP packet from the original source to the final destination.
IP Address Structure
- An IP address consists of two parts: network portion and host portion.
- The left-most part of an IP address indicates the host portion.
MAC Addressing in Data Link Layer
- MAC addresses are used by the Data Link Layer to deliver data between devices on the same network.
- The Data Link Layer passes on the IP packet to the next level for processing.
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Description
Test your knowledge about network data access and MAC addresses. Learn about how devices communicate on the same network, using the same number in the network portion of the IP address, and how data link layer addresses work with MAC addresses in Ethernet networks.
