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Difficulty: MediumRemote Access Technologies and Tools

Match each remote access technology or protocol on the left with its corresponding default port, platform constraint, or operational behavior on the right.

  • RDP (Remote Desktop Protocol) HostListens on TCP port 3389 and requires Windows Pro, Enterprise, or Education to host inbound sessions.
  • TelnetTransmits CLI commands and credentials in cleartext over default TCP port 23.
  • MSRA (Microsoft Remote Assistance)Allows a user to invite a technician into their active desktop session without logging off or locking the screen.
  • SSH (Secure Shell)Provides encrypted console-based remote management over default TCP port 22.

Answer

RDP Host matches with listening on TCP port 3389 and requiring Windows Pro/Enterprise/Education editions to host sessions. Telnet matches with transmitting CLI commands and credentials in cleartext over default TCP port 23. MSRA matches with allowing a user to invite a technician into their active desktop session without logging off or locking the screen. SSH matches with providing encrypted console-based remote management over default TCP port 22.
Each technology is correctly paired with its specific operational parameters: RDP uses TCP port 3389 and requires a Pro, Enterprise, or Education edition of Windows to act as a host; Telnet uses TCP port 23 and transmits data unencrypted; MSRA allows interactive dual-user participation on an active desktop session; SSH provides encrypted CLI access on TCP port 22.

Step-by-Step Solution

1
Identify the port and edition requirements for Remote Desktop Protocol (RDP)
RDP uses TCP port 3389. Windows Home edition lacks the inbound RDP host server feature, requiring Pro, Enterprise, or Education editions.
This pairs RDP Host with TCP port 3389 and Windows edition constraints.
2
Differentiate between secure and insecure remote command-line tools (SSH vs. Telnet)
SSH uses TCP port 22 for secure encrypted CLI access, while Telnet uses TCP port 23 and sends data in cleartext.
This pairs Telnet with unencrypted TCP port 23 traffic and SSH with encrypted TCP port 22 management.
3
Identify the interactive sharing model of Microsoft Remote Assistance (MSRA)
MSRA relies on an invitation process where the end-user shares control of their active session without locking out the user.
This pairs MSRA with the interactive screen-sharing behavior.

Key Concept

Remote Access Technologies, Ports, Protocols, and Windows Edition Support
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Topics

Remote Access Technologies and Tools

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