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Difficulty: HardRemote Access Technologies and Tools

Match each remote access technology or protocol to its primary operational characteristic and default port assignment.

  • SSH (Secure Shell)Provides an encrypted command-line session operating over default TCP port 22 for secure remote system administration.
  • RDP (Remote Desktop Protocol)Provides a full remote GUI desktop session over default TCP port 3389, requiring Windows Pro, Enterprise, or Server to act as an incoming host server.
  • TelnetProvides an unencrypted text-based terminal session over default TCP port 23, transmitting all data and login credentials in cleartext.
  • MSRA (Microsoft Remote Assistance)Allows a user to issue an invitation to a helper to view and control their active Windows desktop session over TCP port 3389.

Answer

SSH matches with TCP port 22 encrypted command-line access; RDP matches with TCP port 3389 full GUI host session restricted to Pro/Enterprise Windows editions; Telnet matches with TCP port 23 unencrypted cleartext terminal; MSRA matches with TCP port 3389 user-invited interactive session sharing.
Each technology correctly corresponds to its default network port and operational scope: SSH secures command-line administrative sessions over port 22; RDP provides complete remote control over port 3389 for host-capable Windows editions (Pro/Enterprise); Telnet uses cleartext port 23; and MSRA enables temporary screen-sharing assistance via user invitation over port 3389.

Step-by-Step Solution

1
Evaluate the command-line protocol features and security mechanisms.
Map SSH to TCP port 22 due to encrypted session transmission and Telnet to TCP port 23 due to unencrypted cleartext transport.
CompTIA standards emphasize using SSH over Telnet to prevent credential interception.
2
Analyze Windows-native GUI remote access utilities and OS edition capabilities.
Map RDP to TCP port 3389 host hosting restrictions (requires Windows Pro/Enterprise) and MSRA to TCP port 3389 invitation-based desktop assistance.
RDP creates an independent locked desktop host session available only on higher Windows editions, whereas MSRA allows interactive dual control across standard client editions.

Key Concept

Remote Access Protocols, Default Ports, and Windows Edition Capabilities
Estimated Time:1m 30s
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Topics

Remote Access Technologies and Tools

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