LFCS · 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 be used with specific switches and NetBIOS name suffixes to perform various NetBIOS lookups, such as listing registered names by a machine or finding a Master Browser.
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
(49 responses)- A6% (3)
- B78% (38)
- C16% (8)
Why each option
The `nmblookup` command can be used with specific switches and NetBIOS name suffixes to perform various NetBIOS lookups, such as listing registered names by a machine or finding a Master Browser.
The `#20` NetBIOS suffix typically identifies the server service (workstation/file server) on a machine, not specifically an authentication server; for authentication, different suffixes or Kerberos would be involved.
The `nmblookup -S name` command sends a node status query to the specified machine, `name`, and lists all the NetBIOS names that the machine has registered.
The `nmblookup -A` option performs an adapter status query on a *specific IP address* to list its registered NetBIOS names; it does not list all recorded names in a local NetBIOS server (e.g., a WINS server) without further context or targeting a WINS server's IP.
The `nmblookup "testing#1d"` command is used to find the Local Master Browser for the workgroup or domain named 'TESTING', as the `#1D` suffix represents the Master Browser role.
The `nmblookup "server#1D"` command attempts to locate the Master Browser for the workgroup or domain identified as 'server', using the `#1D` NetBIOS suffix which signifies the Master Browser role.
Concept tested: nmblookup utility and NetBIOS suffixes
Source: https://www.samba.org/samba/docs/current/manpages/nmblookup.1.html
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