Which interface is commonly used for out-of-band server management to power-cycle hardware when the operating system is unavailable?

Which interface is commonly used for out-of-band server management to power-cycle hardware when the operating system is unavailable?

• A. IPMI
• B. SSH
• C. RDP
• D. VPN

Answer: (A)

Out-of-band management lets you control and monitor a server even when the operating system isn’t running. A management controller on the server, often using IPMI, provides hardware-level access to power controls, resets, and a remote console. This means you can power-cycle or troubleshoot the machine without relying on the OS or on network services that the OS would normally provide. SSH, RDP, and VPN require the OS to be up and running or rely on in-OS services; they don’t offer independent hardware power control. That’s why IPMI is the interface commonly used for powering hardware when the operating system is unavailable.

Out-of-band management lets you control and monitor a server even when the operating system isn’t running. A management controller on the server, often using IPMI, provides hardware-level access to power controls, resets, and a remote console. This means you can power-cycle or troubleshoot the machine without relying on the OS or on network services that the OS would normally provide. SSH, RDP, and VPN require the OS to be up and running or rely on in-OS services; they don’t offer independent hardware power control. That’s why IPMI is the interface commonly used for powering hardware when the operating system is unavailable.