NBNS in local networks is best described as?

• A. A firewall protocol
• B. A global DNS replacement
• C. A name service used for resolving hostnames on local networks
• D. An email routing protocol

Answer: (C)

NBNS is a name resolution service for NetBIOS names on a local network. It lets devices locate each other by their NetBIOS hostname within the LAN, typically by broadcasting on the local segment or via a WINS server to map a NetBIOS name to an IP address. This is different from global DNS, which resolves domain names across networks and the Internet. It’s also not a firewall protocol or an email routing protocol. In short, NBNS serves the local network by resolving NetBIOS hostnames to IPs, enabling local name-based communication.