LX0-104 · Question #589
When no WINS server is present, all name registrations and lookups are done by UDP _______.
The correct answer is A. broadcast. In the absence of a WINS server, NetBIOS name registrations and lookups are performed using UDP broadcast messages on the local network segment.
Question
Options
- Abroadcast
- Bmulticast
- Cunicast
- DNone of the above.
How the community answered
(35 responses)- A91% (32)
- B3% (1)
- C6% (2)
Why each option
In the absence of a WINS server, NetBIOS name registrations and lookups are performed using UDP broadcast messages on the local network segment.
When no WINS server is available, NetBIOS clients on a local subnet default to using UDP broadcasts, typically on port 137, for name registration, resolution, and release. This method ensures that all machines on the segment can communicate and resolve names without a central server.
Multicast targets a specific group of hosts, whereas traditional NetBIOS over TCP/IP (NBT) without WINS uses general network-wide broadcasts.
Unicast communication is point-to-point and requires the target's IP address beforehand, which is not feasible for initial name registration or lookup without a name server.
Broadcast is the correct method used, so this option is incorrect.
Concept tested: NetBIOS name resolution without WINS
Source: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc940026(v=technet.10)
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