阅读下面的短文，回答 97 ~ 100 题
Scope, complexity, and scale of even a single 5G network are massively larger than intoday’s network. The main challenge is automation on all levels of the 5G eco-system.Without it, the network simply will not work; neither for the anticipated scale nor for thedesired functional complexity.Fundamentally, automation is realized by a largely self-governed network bound tovaring business goals: its configuration, its services, how they are provided, and how it ismanaged. A governance model, ideally realized by policies, defines how these goals are implemented and monitored. Those policies can be low-level configuration parameters,mid-level strategies or high-level intents and goals. Using a mix of these policies impliestranslation between: top-down for realization and bottom-up for action/benefit andvalidation purposes.
Networks and models must address multiple, diverse constituencies. Human intervention should be kept to a minimum (oversight). Management meansmonitoring and repair; not control. Classic self-capabilities are the benefits.
The main challenge is _________on all levels of the 5G eco-system.
[译文]：范围，复杂性和规模，甚至一个单一的 5G 网络比今天的网络大得多。 主要挑战是自动化的 5G 生态系统的所有级别。没有它，网络将无法工作；既不 为预期的规模也不期望的功能复杂度。无论是对预期的规模还是对理想的功能复 杂性都是如此。从根本上说，自动化是通过一个基本上自治的网络实现的，该网 络绑定到不同的业务目标：其配置、服务、如何提供以及如何对其进行管理。治 理模型，理想地通过策略来实现，定义了如何实现和监控这些目标。这些策略可 以是低级配置参数、中级策略或高级意图和目标。使用这些策略的混合意味着： 为了实现而自上而下，为了行动/利益和验证的目的而自下而上。网络和模式必 须针对多个不同的群体。应尽量减少人力干预(监督)。管理意味着监控和修复； 而不是控制。经典的自我能力是有益的。
A _________model, ideally realized by policies, defines how these goals are implemented and monitored.
Human intervention should be kept on to a _________.
The main idea of this shot article is _________.