NBNS queries run over which port?

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Multiple Choice

NBNS queries run over which port?

Explanation:
NetBIOS Name Service (NBNS) is the mechanism used to resolve NetBIOS names to IP addresses in networks that use NetBIOS over TCP/IP. NBNS queries are carried by UDP datagrams sent to port 137, either directly to a target host or broadcast on the local subnet. This is why NBNS queries run over UDP port 137. The other ports listed correspond to DNS (port 53) or the NetBIOS Session Service (port 139 for TCP), which are different services and not used for NBNS name queries.

NetBIOS Name Service (NBNS) is the mechanism used to resolve NetBIOS names to IP addresses in networks that use NetBIOS over TCP/IP. NBNS queries are carried by UDP datagrams sent to port 137, either directly to a target host or broadcast on the local subnet. This is why NBNS queries run over UDP port 137. The other ports listed correspond to DNS (port 53) or the NetBIOS Session Service (port 139 for TCP), which are different services and not used for NBNS name queries.

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