What are two common steps to troubleshooting a rack server with unrecognized or memory errors? (Choose two.)

Server memory controllers require DIMMs to be populated in specific slots to match the required channel or rank configuration; installing them in incorrect slots causes the memory to be undetected or to generate errors during POST.

Bent CPU socket pins can cause processor or platform initialization failures, but they are not a primary cause of memory-specific recognition errors and are not a common first troubleshooting step for DIMM issues.

A faulty AC power cord would prevent the server from powering on entirely rather than producing memory detection or memory error symptoms.

Reseating DIMMs clears surface oxidation and reestablishes firm electrical contact between the gold-edge connector and the DIMM slot, which resolves a large proportion of intermittent and persistent memory recognition failures.

The front I/O cable connects panel indicators and buttons to the motherboard and has no electrical relationship to memory slots or DIMM detection.