The purpose of a deadman door controlling access to a computer facility is primarily to:
prevent toxic gases from entering the data center.
starve a fire of oxygen.
prevent an excessively rapid entry to, or exit from, the facility.
The purpose of a deadman door controlling access to a computer facility is primarily intended to
prevent piggybacking. Choices B and C could be accomplished with a single self-closing door.
Choice D is invalid, as a rapid exit may be necessary in some circumstances, e.g., a fire.