How does "anycast addressing" operate within the context of subnetted networks, especially in content delivery networks (CDNs)?

What is the definition of the LLC (Logical Link Control) layer?

We claim that the end-to-end transit of packets between transmitting and receiving sites is defined by the service model of a network layer. What does the Internet service model's network layer entail? What promises does the Internet's service model make about the transmission of datagrams from one host to another?

What are Double-Tagging (Q-in-Q) VLANs, and what scenarios might require their use in networking?

In a modern network architecture, how does the use of software-defined networking (SDN) impact the role and operation of devices across multiple layers of the OSI model?

Explain the difference between unacknowledged connectionless service and acknowledged connectionless service in the data link layer. How do the protocols that provide these services differ?

What are the prevailing interior and exterior routing protocols utilized in contemporary networks?