The time required for fetching and execution of one simple machine instruction is known as

The correct answer is CPU cycle.

• The time required for the fetching and execution of one simple machine instruction is CPU cycle time.
• The fundamental sequence of steps that a CPU performs is called CPU Cycle, it is also known as the "fetch-execute cycle,".
• In simpler CPUs, the instruction cycle is executed sequentially, each instruction being processed before the next one is started.
• In most modern CPUs, the instruction cycles are instead executed concurrently, and often in parallel, through an instruction pipeline
• A clock cycle, or simply a "cycle," is a single electronic pulse of a CPU.
• During each cycle, a CPU can perform a basic operation such as fetching an instruction, accessing memory, or writing data.

Additional Information

• ​Real-time is a level of computer responsiveness that a user senses as sufficiently immediate or that enables the computer to keep up with some external process.
• Seek time is the time which is required by the drive to pick the read/write head and take it to the proper track of the disk.
  • The seek time is a part of the access time where the latter also includes latency time and overhead time.
• Delay time is the time required for a digital signal to travel from the input(s) of a logic gate to the output.