Maximum number of steps in a job
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16
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255
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256
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No limit
Most job‑control systems cap the number of steps at 255, fitting within an 8‑bit counter. The stored answer of 255 matches this documented limit, while the other numbers are off by one or claim no limit, which is inaccurate.
To answer this question, we need to understand the concept of the maximum number of steps in a job.
In computing, a "job" refers to a task or a program that is being executed by a computer system. Each job can be divided into a series of steps or instructions that the computer follows to complete the task. The maximum number of steps in a job is determined by the computer system's architecture and limitations.
Now let's go through each option to understand why it is correct or incorrect:
Option A) 16 - This option is incorrect because 16 is a relatively low number and may not be sufficient for many complex tasks.
Option B) 255 - This option is correct because 255 represents the maximum value that can be stored in an 8-bit binary number (2^8 - 1). In some computer systems, the maximum number of steps in a job is limited to 255 instructions.
Option C) 256 - This option is incorrect because 256 exceeds the maximum value that can be stored in an 8-bit binary number. Additionally, having 256 steps in a job would require a larger memory capacity and may not be supported by all computer systems.
Option D) No limit - This option is incorrect because there is typically a limit to the number of steps in a job. Computer systems have finite resources and limitations that restrict the maximum number of instructions that can be executed in a single job.
The correct answer is B) 255. This option is correct because it represents the maximum number of steps that can be executed in a job in some computer systems.