能上QQ但打不开网页是的原因是DNS服务器解析出错造成的，可以通过以下解决方法：1.单击“开始”菜单，单击“控制面念轮睁板”，双击“网络和共享中心”。/iknow-pic.cdn.bcebos.com/0824ab18972bd407f58cf38177899e510fb30906"target="_blank">/iknow-pic.cdn.bcebos.com/0824ab18972bd407f58cf38177899e510fb30906?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"wqktp="https://iknow-pic.cdn.bcebos.com/0824ab18972bd407f58cf38177899e510fb30906"/>2.右击“本地连接”图标，弹出的菜单选择“属性”命令。/iknow-pic.cdn.bcebos.com/4afbfbedab64034fac53e27aa3c379310a551d2b"target="_blank">/iknow-pic.cdn.bcebos.com/4afbfbedab64034fac53e27aa3c379310a551d2b?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"wqktp="https://iknow-pic.cdn.bcebos.com/4afbfbedab64034fac53e27aa3c379310a551d2b"/桐慧>/仔岁iknow-pic.cdn.bcebos.com/9f510fb30f2442a71ef3ddd9dd43ad4bd01302c8"target="_blank">/iknow-pic.cdn.bcebos.com/9f510fb30f2442a71ef3ddd9dd43ad4bd01302c8?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"wqktp="https://iknow-pic.cdn.bcebos.com/9f510fb30f2442a71ef3ddd9dd43ad4bd01302c8"/>3.点击“属性”选项下的此连接使用下列项目列表中双击“Internet协议版本4（TCP/IPv4）”。/iknow-pic.cdn.bcebos.com/7e3e6709c93d70cfa6958971f4dcd100baa12b5a"target="_blank">/iknow-pic.cdn.bcebos.com/7e3e6709c93d70cfa6958971f4dcd100baa12b5a?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"wqktp="https://iknow-pic.cdn.bcebos.com/7e3e6709c93d70cfa6958971f4dcd100baa12b5a"/>4.如果当前使用的是“自动获得IP地址”，请选择“使用下面的IP地址”，并为其指派IP地址和DNS服务器，如果已经分配好IP地址和DNS服务器，向当地网络运营商获取正确的IP地址和DNS服务器以替换，这样设置后问题解决。/iknow-pic.cdn.bcebos.com/2f738bd4b31c870150dc919a2b7f9e2f0708ff60"target="_blank">/iknow-pic.cdn.bcebos.com/2f738bd4b31c870150dc919a2b7f9e2f0708ff60?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"wqktp="https://iknow-pic.cdn.bcebos.com/2f738bd4b31c870150dc919a2b7f9e2f0708ff60"/>DNS（域名系统）是互联网的一项服务。它作为将域名和IP地址相互映射的一个分布式数据库，能够使人更方便地访问互联网。DNS使用TCP和UDP端口53[1]。当前，对于每一级域名长度的限制是63个字符，域名总长度则不能超过253个字符。
