Multiple choice server

Which port is the NetBIOS User Datagram Protocol (UDP) port?

  1. PORT 137

  2. PORT 135

  3. PORT 138

  4. PORT 139
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NetBIOS Name Service uses UDP port 137 for name registration and resolution queries. NetBIOS Datagram Service uses port 138, and NetBIOS Session Service uses TCP port 139. Port 135 is used by Microsoft RPC (Remote Procedure Call), not NetBIOS.

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