Problem Statement: A company is opening a new headquarters with three floors. They need a fast, secure local network for employees, a centralized point of failure to avoid entire system crashes, and an external connection to the internet. Determine the appropriate network type and physical topology.

Problem Statement: Trace the flow of data downwards through the 7 layers of the OSI model when a user types a website URL into their browser and hits enter.

Problem Statement: You are given the IP address 192.168.1.50 with a subnet mask of 255.255.255.0 (also written as /24). Determine the Network Address, the Broadcast Address, and the range of valid host IP addresses.

Problem Statement: A military data center requires 100% uptime. They have 4 critical core routers. If any single cable gets cut, or even if an entire router goes offline, traffic must still be able to flow between all remaining active nodes. Determine the best physical topology.