Which layer constructs the IP datagram?

The IP datagram is constructed by the Network Layer (Layer 3) of the OSI model. Explanation This layer is responsible for routing data packets between different networks and ensuring that they reach their intended destination successfully. It adds source and destination addresses to each packet and constructs the headers needed for proper identification, as well … Read more

What Routing Table Entry has a Next-Hop Address Associated with a Destination Network?

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Routing tables contain key information that routers use to forward packets towards their destination network. Specifically, entries for remote networks include next hop addresses – the IP address of the interface on the next router that should receive the packet on the path to the final destination. Understanding how to identify next-hop routes provides insight … Read more

What is an ARP Table?

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The Address Resolution Protocol (ARP) is a critical communication protocol used on local area networks (LANs). It is defined in RFC 826 and operates at Layer 2 of the OSI model. ARP provides the translation between IP addresses and MAC addresses within a single network. This allows machines to communicate directly on the LAN without … Read more