After installation or replacement of a Cisco UCS C-Series Rack-Mount Server, the host does not boot. Which four options should be verified? (Choose four.)

Verifying the power source to the equipment is the most fundamental first step - without confirmed upstream power delivery, no further troubleshooting is valid, and power source problems are common in new rack installations.

Loose HDD cables cause storage enumeration failures but do not prevent a server from completing POST and beginning the boot sequence, making them a lower-priority check in a no-boot scenario.

Reseating DIMMs, CPUs, and PCI cards directly addresses the most common cause of post-installation boot failures, which is components not fully seated during installation or dislodged during a replacement procedure.

Verifying that power supplies are receiving power confirms that the PSUs themselves are connected and functional, which is a distinct hardware check from verifying the upstream power source.

The mezzanine card connector is a component specific to blade server form factors and is not present or relevant in a C-Series rack-mount server.

Bent CPU socket pins are a physical damage risk during any installation involving the processor, and their presence will entirely prevent boot - visual inspection of the socket is mandatory after CPU-related work.

Fan faults in Cisco IMC may cause thermal throttling or warnings but do not typically halt the boot process entirely in a newly installed server.