Interoperability refers to the ability of diverse systems and organizations to work together. Key points about file systems include: FAT stores file information in a file allocation table, FAT32 supports smaller clusters and larger volumes than FAT, and NTFS provides advanced features like permissions, encryption, and compression. A hub is a common connection point that copies packets to all ports so all network segments can see traffic. TCP/IP is the set of protocols used for the Internet and similar networks. DHCP dynamically assigns IP addresses and related information to clients to reduce administration workload. Server logs contain error information that can help trace and fix problems. Network documentation should include information about capacity planning and security.