What is the difference between 32-bit and 64-bit operating systems?

The distinction between 32-bit and 64-bit operating systems primarily revolves around their ability to manage memory and the type of applications they can run. A 64-bit operating system can utilize a significantly larger addressable memory space compared to a 32-bit system. Specifically, while a 32-bit system can typically handle up to 4 GB of RAM, a 64-bit system can theoretically address up to 16 exabytes, though practical limits are lower due to hardware and system design factors.

This increased memory capacity allows 64-bit systems to run more complex and advanced applications that require greater amounts of RAM, such as graphic design software, video editing tools, and large databases. Furthermore, 64-bit systems can execute more threads and processes simultaneously, enhancing multitasking capabilities and overall performance in environments that demand significant computational power.

The other choices involve inaccuracies regarding application compatibility, security, and performance which do not reflect the general characteristics of these systems. For example, while 64-bit systems can indeed run many 32-bit applications through compatibility layers, they are not limited to running only those.