Final answer:
A computer system with multiple CPUs can perform parallel processing, handling multiple tasks simultaneously. These systems are capable of executing, parallel processing, and sequential processing of tasks. Sequential processing is still relevant for tasks that require a step-by-step process.
Step-by-step explanation:
If a computer system has multiple hardware processors (CPUs), it is capable of parallel processing. This means that each CPU can execute instructions simultaneously, allowing for multiple processes to be carried out at the same time. Such a system is particularly efficient at handling tasks that can be divided into smaller subtasks, which can be processed concurrently.
Modern computers, such as those with Pentium chips, can execute a massive number of instructions per second. With multiple CPUs, the potential for computational power is greatly increased, as each chip can perform these executions without waiting for the other. In this scenario, all three options provided are possible: execution, parallel processing, and sequential processing. Sequential processing can still occur, as some tasks may require a linear series of steps.
At different levels of abstraction, the operation of a computer can be seen differently. At the physical level, it's a series of electronic changes; at the design level, it's about running programs; and at the commonsense level, it's about the tasks the user perceives, like word processing or solving equations.