SMB / Samba uses which port?

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Prepare for the CPSA Port Numbers exam with multiple choice questions and detailed explanations. Understand key protocols and services to excel in your test.

Multiple Choice

SMB / Samba uses which port?

Explanation:
SMB/CIFS file sharing over TCP/IP uses port 445. Samba provides Windows‑compatible file sharing on Unix/Linux by using TCP 445 for direct SMB communication, which is the standard today. Historically, SMB could run over NetBIOS with ports 139 and 137-138, but that's less common now. The other ports correspond to different services: 25 is SMTP, 111 is RPC/portmapper, and 22 is SSH.

SMB/CIFS file sharing over TCP/IP uses port 445. Samba provides Windows‑compatible file sharing on Unix/Linux by using TCP 445 for direct SMB communication, which is the standard today. Historically, SMB could run over NetBIOS with ports 139 and 137-138, but that's less common now. The other ports correspond to different services: 25 is SMTP, 111 is RPC/portmapper, and 22 is SSH.

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