During a planned OS re-installation, a systems administrator wants to make sure remote console access to a rack-mounted server is still possible even when no operating system is present and the data-plane network interfaces are misconfigured. The server's dedicated management port is already patched into a separate management VLAN. Which built-in feature should the administrator enable to satisfy these requirements?
Install a VNC service inside the hypervisor for remote keyboard and video
Configure an SSH daemon on the host OS and connect through a terminal emulator
Enable IPMI Serial-over-LAN on the server's baseboard management controller
Enable Remote Desktop Protocol once Windows Server Core is installed
A server's baseboard management controller (BMC) can present an out-of-band console that is completely independent of the host CPUs, disks, and production NICs. Enabling IPMI Serial-over-LAN (or the vendor's KVM-over-IP/iLO/iDRAC implementation) lets an administrator watch POST messages, enter the BIOS/UEFI setup, mount virtual media, and power-cycle the system-even when no OS or hypervisor is installed. SSH, RDP, and VNC services all rely on an in-band network stack that becomes available only after an operating system or hypervisor has booted, so they cannot guarantee access during bare-metal provisioning or after a network-layer failure.
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What is the role of a Baseboard Management Controller (BMC)?
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What is IPMI Serial-over-LAN and how does it work?
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How does out-of-band management differ from in-band management?