(ISC)2 Certified in Cybersecurity Practice Exam

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What is port 3389 used for?

  1. HTTPS

  2. SQL Server

  3. SMB

  4. RDP

The correct answer is: RDP

Port 3389 is primarily used for the Remote Desktop Protocol (RDP). RDP is a network communications protocol that allows users to connect to another computer over a network connection, providing a graphical interface to that remote computer. This capability is widely used for remote administration and support, enabling users to access their desktops and applications hosted on remote servers or workstations securely. When discussing the other options: - HTTPS operates on port 443, which is specifically used for secure web transactions over HTTP. - SQL Server typically uses port 1433 to communicate with client applications for database queries and management. - SMB, or Server Message Block, generally uses port 445 for file sharing and network services. In summary, the usage of port 3389 for RDP is well-defined and established, making it an essential feature for users needing to connect remotely and manage systems from different locations.