220-1102 Question 805
Single answerVirtual network computer (VNC)A help desk technician needs to remotely assist a user who is working from home on a company-owned Windows PC. The technician must be able to view and control the user's desktop in real time, and the user does not have Windows Pro, so Remote Desktop host functionality is not available. The company wants the quickest solution that works across different operating systems if needed later. Which remote access method should the technician use?
- A
Configure VNC on the user's PC and connect with a VNC viewer
- B
Enable Remote Desktop Services on the user's PC and connect with mstsc
- C
Use SSH to open a command-line session and control the desktop environment
- D
Join the user's computer to a domain so Group Policy can provide screen-sharing access
Show answer and explanation
Correct answer: A
Explanation
The best answer is to use VNC. Virtual Network Computing is a remote access technology that allows one system to view and control another system's graphical desktop. This makes it appropriate for help desk scenarios where a technician must assist a user interactively. VNC is also widely available on Windows, macOS, and Linux, aligning with the requirement for cross-platform support. By contrast, Microsoft Remote Desktop depends on supported Windows editions for host capability, SSH is primarily command-line based, and domain membership is an administrative structure rather than a remote-control method. This aligns with common CompTIA A+ Core 2 expectations around selecting the correct remote access tool for a given support scenario and follows vendor documentation that distinguishes VNC-style screen sharing from RDP host requirements and SSH terminal access.
- A. Correct.
Correct. VNC is designed for remote desktop sharing and control, allowing a technician to view and interact with the user's graphical desktop in real time. It is commonly used across multiple operating systems, which fits the requirement for cross-platform flexibility. In a support scenario where Remote Desktop host capability is unavailable, VNC is a practical alternative.
- B. Incorrect.
Incorrect. Microsoft Remote Desktop host capability is generally tied to supported editions such as Windows Pro, Enterprise, or Education. The scenario specifically states the user does not have Windows Pro, so enabling standard Remote Desktop host functionality on that PC is not the appropriate solution. A candidate might choose this because Remote Desktop is a common remote support tool, but the edition limitation makes it unsuitable here.
- C. Incorrect.
Incorrect. SSH is primarily used for secure command-line remote administration, especially on Linux and network devices. By itself, SSH does not provide the technician with a graphical remote-control session of the user's desktop, which is required in this case. Someone might choose SSH because it is a common remote management protocol, but it does not meet the stated need for desktop viewing and control.
- D. Incorrect.
Incorrect. Joining a computer to a domain allows centralized management through Group Policy, but it does not by itself provide a remote desktop sharing tool. This option confuses management infrastructure with remote-control technology. A domain could help deploy software such as a VNC server, but domain membership alone does not solve the immediate support need.