编号 2093189 单选题 ThediffservapproachtoprovidingQoSinnetworksemploysasmall,well-definedsetofbuildingblocksfromwhichyoucanbuildavarietyof(________).Itsaimistodefinethedifferentiatedservices(DS)byte,theTypeofService(ToS)bytefromtheInternetProtocolVersion4()andtheTrafficClassbytefromIPVersion6,andmarkthestandardizedDSbyteofthepacketsuchthatitreceivesaparticularforwardingtreatment,orper-hopbehavior(PH B),ateachnetworknode.Thediffservarchitectureprovidesa()withinwhichserviceproviderscanoffercustomersarangeofnetworkservices,eachdifferentiatedbasedonperformance.Acustomercanchoosethe()levelneededonapacket-by-packetbasisbysimplymarkingthepacket'sDifferentiatedServicesCodePoint(DSCP)fieldtoaspecificvalue.This()specifiesthePHBgiventothepacketwithintheserviceprovidernetwork。横线处应选() 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093188 单选题 ThediffservapproachtoprovidingQoSinnetworksemploysasmall,well-definedsetofbuildingblocksfromwhichyoucanbuildavarietyof().Itsaimistodefinethedifferentiatedservices(DS)byte,theTypeofService(ToS)bytefromtheInternetProtocolVersion4()andtheTrafficClassbytefromIPVersion6,andmarkthestandardizedDSbyteofthepacketsuchthatitreceivesaparticularforwardingtreatment,orper-hopbehavior(PH B),ateachnetworknode.Thediffservarchitectureprovidesa(_______)withinwhichserviceproviderscanoffercustomersarangeofnetworkservices,eachdifferentiatedbasedonperformance.Acustomercanchoosethe()levelneededonapacket-by-packetbasisbysimplymarkingthepacket'sDifferentiatedServicesCodePoint(DSCP)fieldtoaspecificvalue.This()specifiesthePHBgiventothepacketwithintheserviceprovidernetwork。横线处应选() 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093186 单选题 某企业采用防火墙保护内部网络安全。与外网的连接丢包严重,网络延迟高,且故障持续时间有2周左右。技术人员采用如下步骤进行故障检测:(1)中选_______. 1.登录防火墙,检查(1),发现使用率较低,一切正常。 2.查看网络内各设备的会话数和吞吐量,发现只有一台设备异常,连接数有7万多,而同期其他类似设备都没有超过千次。 3.进行(2)操作后,故障现象消失,用户Internet接入正常。可以初步判断,产生故障的原因不可能是(3),排除故障的方法是在防火墙上(4)。 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093183 单选题 ThediffservapproachtoprovidingQoSinnetworksemploysasmall,well-definedsetofbuildingblocksfromwhichyoucanbuildavarietyof().Itsaimistodefinethedifferentiatedservices(DS)byte,theTypeofService(ToS)bytefromtheInternetProtocolVersion4()andtheTrafficClassbytefromIPVersion6,andmarkthestandardizedDSbyteofthepacketsuchthatitreceivesaparticularforwardingtreatment,orper-hopbehavior(PH B),ateachnetworknode.Thediffservarchitectureprovidesa()withinwhichserviceproviderscanoffercustomersarangeofnetworkservices,eachdifferentiatedbasedonperformance.Acustomercanchoosethe()levelneededonapacket-by-packetbasisbysimplymarkingthepacket'sDifferentiatedServicesCodePoint(DSCP)fieldtoaspecificvalue.This(_________)specifiesthePHBgiventothepacketwithintheserviceprovidernetwork。横线处应选() 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093181 单选题 数字签名首先需要生成消息摘要,然后发送方用自己的私钥对报文摘要进行加密,接收方用发送方的公钥验证真伪。对摘要进行加密的算法为()。 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093176 单选题 ThediffservapproachtoprovidingQoSinnetworksemploysasmall,well-definedsetofbuildingblocksfromwhichyoucanbuildavarietyof().Itsaimistodefinethedifferentiatedservices(DS)byte,theTypeofService(ToS)bytefromtheInternetProtocolVersion4(________)andtheTrafficClassbytefromIPVersion6,andmarkthestandardizedDSbyteofthepacketsuchthatitreceivesaparticularforwardingtreatment,orper-hopbehavior(PH B),ateachnetworknode.Thediffservarchitectureprovidesa()withinwhichserviceproviderscanoffercustomersarangeofnetworkservices,eachdifferentiatedbasedonperformance.Acustomercanchoosethe()levelneededonapacket-by-packetbasisbysimplymarkingthepacket'sDifferentiatedServicesCodePoint(DSCP)fieldtoaspecificvalue.This()specifiesthePHBgiventothepacketwithintheserviceprovidernetwork。横线处应选() (72)Amessage B.Packet C.header D.package 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093172 单选题 数字签名首先需要生成消息摘要,然后发送方用自己的私钥对报文摘要进行加密,接收方用发送方的公钥验证真伪。生成消息摘要的算法为()。 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093171 单选题 某宾馆三层网速异常,ping网络丢包严重。通过对核心交换机查看VLAN接口IP与MA C,与客户电脑获取的进行对比发现不一致。在交换机上启用DHCPsnooping后问题解决。可以通过()方法杜绝此类故障。 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷
编号 2093170 单选题 <p>某网络中PC1无法访问域名为www.aaa.cn的网站,而其他主机访问正常,在PC1上执行ping命令时有如下所示的信息:造成该现象可能的原因是()。 <img alt="" src="https://file.gaojiufeng.cn/learnAppQuestion/a0/4d/a04dc5f32db58e4a7767d635042dffac.png" style="width: 100%;height: auto;"></p> 🔘 单选题 📅 2022-04-19 📝 查看答案 📋 查看试卷