随着社会的发展,人们使用计算机的次数在逐渐增加,信息化时代理念广泛地渗透到社会生活的方方面面。人们对计算机网络安全有了更高要求,同时也就需要对用户使用的质量有所保证,需要提高计算机网络的质量水平。计算机网络的可靠性是网络服务质量的重要衡量指标,对于网络可靠性的研究也得到了学者广泛的重视。 With the development of society, the number of people using computers has gradually increased, and the concept of information era has permeated into all aspects of social life extensively. People have higher requirements on computer network security, and at the same time, they need to guarantee the quality of users and need to improve the quality of computer networks. The reliability of computer network is an important measure of network service quality, and the research of network reliability has received extensive attention of scholars.