LX0-104 · Question #330
What are the correct alternatives to the nmblookup command when performing NetBIOS lookups? (Select THREE correct answers.)
The correct answer is B. nmblookup -S name lists the recorded names by the NetBIOS machine called name. D. nmblookup "testing#1d" looks for a Local Master Browser for the workgroup TESTING. E. nmblookup "server#1D" looks for a Master Browser Server called server.. The nmblookup command can list names registered by a NetBIOS machine using -S, and specific NetBIOS resource types like Master Browsers (identified by #1d or #1D suffix) for a workgroup or server.
Question
Options
- Anmblookup "server#20" looks for an authetication server called server.
- Bnmblookup -S name lists the recorded names by the NetBIOS machine called name.
- Cnmblookup -A lists all recorded names in the local NetBIOS server.
- Dnmblookup "testing#1d" looks for a Local Master Browser for the workgroup TESTING.
- Enmblookup "server#1D" looks for a Master Browser Server called server.
How the community answered
(41 responses)- A10% (4)
- B73% (30)
- C17% (7)
Why each option
The `nmblookup` command can list names registered by a NetBIOS machine using `-S`, and specific NetBIOS resource types like Master Browsers (identified by `#1d` or `#1D` suffix) for a workgroup or server.
The NetBIOS suffix `#20` indicates a server (workstation service) and means it's available for file/print sharing, not specifically an "authentication server" though a domain controller would also publish this type.
The `nmblookup -S name` command queries the NetBIOS name server (WINS) or uses broadcasts to resolve the specified name and then lists all NetBIOS names registered by that machine.
`nmblookup -A <IP address>` is used to query names registered by a machine at a specific IP address, not to list "all recorded names in the local NetBIOS server".
The NetBIOS suffix `#1d` (or `#1D`) specifically identifies the Master Browser for a given workgroup. Therefore, `nmblookup "testing#1d"` correctly searches for the Local Master Browser for the `TESTING` workgroup.
Similar to `#1d`, the `#1D` NetBIOS suffix identifies a Master Browser. Thus, `nmblookup "server#1D"` accurately seeks a Master Browser server with the NetBIOS name "server".
Concept tested: `nmblookup` options and NetBIOS name types
Source: https://www.samba.org/samba/docs/current/manpages/nmblookup.1.html
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