Which protocol provides NetBIOS name resolution and is commonly referred to by the acronym NBNS?

Which protocol provides NetBIOS name resolution and is commonly referred to by the acronym NBNS?

• A. SMB over NetBIOS
• B. Session Initiation Protocol (SIP)
• C. NetBIOS Session Service
• D. NetBIOS Name Service (NBNS)

Answer: (D)

NetBIOS name resolution is handled by the NetBIOS Name Service, which maps NetBIOS names to IP addresses on the local network. This protocol is commonly known by the acronym NBNS. It typically uses UDP port 137 and is used to locate devices by their NetBIOS names within a LAN, with WINS helping in larger or more complex networks. The other options don’t perform name resolution: SMB over NetBIOS is for accessing shared resources, not resolving names; the NetBIOS Session Service handles establishing a session (port 139 TCP) after names are resolved; and SIP is used for initiating multimedia sessions and has no relation to NetBIOS name resolution.

NetBIOS name resolution is handled by the NetBIOS Name Service, which maps NetBIOS names to IP addresses on the local network. This protocol is commonly known by the acronym NBNS. It typically uses UDP port 137 and is used to locate devices by their NetBIOS names within a LAN, with WINS helping in larger or more complex networks.

The other options don’t perform name resolution: SMB over NetBIOS is for accessing shared resources, not resolving names; the NetBIOS Session Service handles establishing a session (port 139 TCP) after names are resolved; and SIP is used for initiating multimedia sessions and has no relation to NetBIOS name resolution.