CAJ | 학술논문

针对域名系统( DNS)服务质量评价问题，通过对网络行为数据流的分析，结合路由路径平均长度等5个影响网络性能的主要参数，评价用户与DNS递归解析服务器之间的网络服务质量。对各参数对服务质量的贡献度进行量化分析。结合量化分析结果，建立基于贡献度的DNS服务质量评价模型。以Alex top1000域名作为基准数据集，对国内外55个DNS服务器进行测试与评价。测试结果及服务质量综合评价结果表明DNS服务器间的服务水平差别较大，离探测点近的DNS服务器服务质量相对较好，建议优先选取。
침대역명계통( DNS)복무질량평개문제，통과대망락행위수거류적분석，결합로유로경평균장도등5개영향망락성능적주요삼수，평개용호여DNS체귀해석복무기지간적망락복무질량。대각삼수대복무질량적공헌도진행양화분석。결합양화분석결과，건립기우공헌도적DNS복무질량평개모형。이Alex top1000역명작위기준수거집，대국내외55개DNS복무기진행측시여평개。측시결과급복무질량종합평개결과표명DNS복무기간적복무수평차별교대，리탐측점근적DNS복무기복무질량상대교호，건의우선선취。
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 pa-rameters 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.