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QoS estimate model of DNS based on contribution degree analysis


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QoS estimate model of DNS based on contribution degree analysis
Du Yuejin123Zhang Zhaoxin14Wang Ke1Yang Xiao1Hu Ping1Ren Lihao1
1.School of Computer Science and Technology,Harbin Institute of Technology,Harbin 150001,China;
2.National Computer Network Emergency Response Technical Team/Coordination Center of China, Beijing 100029,China;
3.School of Computer Science,Beijing University of Posts and Telecommunications,Beijing 100876,China; 4.Institute of Computing Technology, Chinese Academy of Sciences,Beijing 100190,China
contribution degrees domain name systems quality of service routing paths
Aiming at the quality of service(QoS)estimate problem of domain name systems(DNS),the QoS of networks between users and DNS recursive resolution servers are estimated by analyzing the network data streams and combining with the average lengths of routing paths and other four parameters influencing the network performance.The contribution degree of every parameter for QoS is quantitatively analyzed.Combining with the result of the quantitative analysis,a QoS estimate model of DNS based on contribution degrees is established.The QoS of 55 DNS servers from home and abroad are tested and estimated with the Alex top 1 000 domains as the benchmark data.The test and estimate results of QoS show that the QoS level differences of DNS servers are great,and the DNS server close to the probe point has relatively superior QoS,which should be selected first.


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Last Update: 2013-12-31