每个客户都知道栈，所以软件和硬件最佳实践提供了一些实现选项。
Because the stack is known for each consumer, software and hardware best practices provide options for implementation.
即使测试每个孤立选项值都是相当困难的，多数栈不会去尝试。
Even testing each possible option value in isolation is difficult, and most stacks don't try.
为了执行它的任务，每一个配置文件在栈的每个层中使用特定的选项和参数。
To perform its task, each profile USES particular options and parameters at each layer of the stack.
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