Certified Information Systems Security Professional (CISSP) Practice Exam

The type of memory that allows for programming only once after creation is PROM, which stands for Programmable Read-Only Memory. PROM is designed to be programmed by the user after manufacturing. The programming process involves a one-time procedure, which sets the memory's bits to store data permanently. Once programmed, the data in PROM cannot be modified or erased.

In contrast, other types of memory, such as Dynamic RAM and Read/Write Memory, allow for multiple read and write cycles, making them suitable for applications where data needs to be changed frequently. EPROM, while similar to PROM in that it is read-only after being programmed, has the ability to be erased and reprogrammed using ultraviolet light, thereby allowing for updates, which makes it different from the fundamentally one-time nature of PROM. Understanding these distinctions helps in grasping various memory types and their applications in computing and electronic systems.