The correct answer is C. SSH (Secure Shell), because SSH is the standard method for secure, command-line-based remote management of network devices, including switches, routers, and firewalls. Network switches typically do not provide graphical interfaces, and administrators interact with them using a command-line interface (CLI).
According to the Quentin Docter – CompTIA A+ Complete Study Guide, SSH is widely used to securely access and manage network infrastructure devices. It encrypts all communication between the technician’s system and the remote device, protecting credentials and command output from interception.
The Travis Everett & Andrew Hutz – CompTIA A+ All-in-One Exam Guide explains that SSH allows administrators to execute commands remotely and capture text-based output, which can easily be copied and shared for documentation or escalation. This makes it ideal for fulfilling requests that involve running commands and returning results.
The Mike Meyers / Mark Soper Lab Manual clarifies that RDP and VNC are graphical desktop-sharing tools typically used for managing workstations or servers, not network switches. WinRM is used for Windows system management, not network hardware.
Because the task involves secure CLI access to a network switch, SSH is the correct and expected tool, making C the correct answer.