Identifying NetBIOS Session Service | LPIC-1 102-500 Exam original practice question

109.1Standard

Choose the well-known port for NetBIOS Session Service in legacy SMB/CIFS.

Which port is appropriate?

Hint 1: Focus on the requirement

Identify what must change and what must remain unchanged. Then choose the command whose scope matches that requirement.

Hint 2: Check each command's role

Separate commands that display information, change state, remove data, or affect a child process.

Detailed explanation

CorrectTCP 139

Correct. TCP 139 is NetBIOS Session Service.

IncorrectUDP 123

Incorrect. UDP 123 is NTP.

IncorrectTCP 143

Incorrect. TCP 143 is IMAP.

IncorrectUDP 162

Incorrect. UDP 162 is SNMP traps.

An example you can run in a temporary verification environment.

python3 -c "import socket; print(socket.getservbyname('netbios-ssn','tcp'))"

Foundation review

Check whether the command acts on the current shell, a new process, an existing process, or a file.

Use the supplied command and compare the output with the expected result.

Question IDKP-109-789

EnvironmentPython 3 socket service database

Last technical review2026-08-13