Which of the following is the MOST common problem that occurs in server rooms?

Excessive cooling is generally not a common problem; insufficient cooling is the more prevalent issue.

Dust buildup is a very common problem in server rooms because dust particles can accumulate on server components, hindering airflow, acting as an insulator, and causing overheating and potential hardware failure.

While poor ground wires are a serious electrical issue, dust buildup is a more universally common and pervasive environmental maintenance problem in server rooms.

Wet floors are a specific and hazardous incident, not a constant, common environmental problem in a well-maintained server room like dust buildup.