Communication networks are subject to many challenges leading to single or multiple failures of its elements. Example failure scenarios include unintentional failures due to scheduled maintenance activities or massive failures caused by disaster‐induced events. Therefore, it is crucial to enhance the networks with redundancy and resilience mechanisms able to maintain the availability of network services after a failure. As these problems are often inherently hard to solve to optimality, the role of time‐efficient approximation schemes is essential. In this paper, we highlight the selected problems of communication networks resilience addressed in this issue of Networks.

中文翻译：

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通信网络对随机故障和灾难的恢复能力：优化观点

通信网络面临许多挑战，导致其元素发生一次或多次故障。故障场景示例包括由于计划的维护活动导致的意外故障或由灾难引发的事件导致的大规模故障。因此，至关重要的是要使用能够在故障后保持网络服务可用性的冗余和弹性机制来增强网络。由于这些问题通常固有地难以解决，因此，高效时间近似方案的作用至关重要。在本文中，我们重点介绍了本期《网络》中解决的通信网络弹性的选定问题。