题目内容

The metric assigned to each network depends on the type of protocol. Some simple protocol, like RIP, treats each network as equals. The ______ of passing through each network is the same; it is one ______ count. So if a packet passes through 10 network to reach the destination, the total cost is 10 hop counts. Other protocols, such as OSPF, allow the administrator to assign a cost for passing through a network based on the type of service required.A ______ through a network can have different costs (metrics). For example, if maximum ______ is the desired type of service, a satellite link has a lower metric than a fiber-optic line. On the other hand, if minimum ______ is the desired type of service, a fiber-optic line has a lower metric than a satellite line. OSPF allow each router to have several routing table based on the required type of service. 项目每个阶段结束时的一个重要工作是进行项目绩效评审,评审的主要目标是______。

A. 决定项目是否能够进入下一个阶段
B. 根据过去的绩效调整项目进度和成本基准
C. 评定员工业绩和能力
D. 得到客户对项目绩效认同

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评估大中型网络的核心骨干(主干)交换机性能时,通常最关心的指标是______,与该参数密切相关的参数或项目是______。 某Web网站向CA申请了数字证书。当用户登录该网站时,通过验证______来确认该数字证书的有效性,从而验证该网站的真伪。

A. CA的签名
B. 网站的签名
C. 会话密钥
DES密码

目前,DiffServ不能满足移动IP网的应用需求,其主要原因是______。对此,DiffServ的改进措施之一是______。 某项目在招标时被分成5个标段,分别发包给不同的承包人。承包人中标后与招标人签订的是______。

A. 单项项目承包合同
B. 分包合同
C. 单价合同
D. 总承包合同

The metric assigned to each network depends on the type of protocol. Some simple protocol, like RIP, treats each network as equals. The ______ of passing through each network is the same; it is one ______ count. So if a packet passes through 10 network to reach the destination, the total cost is 10 hop counts. Other protocols, such as OSPF, allow the administrator to assign a cost for passing through a network based on the type of service required.A ______ through a network can have different costs (metrics). For example, if maximum ______ is the desired type of service, a satellite link has a lower metric than a fiber-optic line. On the other hand, if minimum ______ is the desired type of service, a fiber-optic line has a lower metric than a satellite line. OSPF allow each router to have several routing table based on the required type of service. 下列关于常见网络版防病毒系统的描述中,错误的是______。

A. 管理控制台必须先于系统中心安装到符合条件的服务器上
B. 在域环境中,脚本登录安装是实现网络版防病毒软件快速自动安装的方法
C. 安装系统中心的计算机应该在有效工作期间保持全天侯的开机状态
D. 可以手工修改网络版防病毒系统的数据通信端口使数据通过防火墙

某软件企业2011年初计划投资1000万人民币开发一套统一安全网关(UTM)产品,预计从2012年开始,年实现产品销售收入1500万元,年市场销售成本1000万元。该产品的分析员张工根据财务总监提供的贴现率,制作了如表所示的产品销售现金流量表。根据表中的数据,该产品的动态投资回收期是______年,投资收益率是______。某企业UTM产品销售现金流量表年度20112012201320142015投 资1000————————成 本——1000100010001000收 入——1500150015001500净现金流量-1000500500500500净现值-925.93428.67396.92367.51340.29 ASON是智能光网络的主要模式之一。以下关于ASON的描述中,错误的是______。

ASON的基本思想是在光传送网中引入管理平面,以实现网络资源的按需分配从而实现光网络的智能化
B. 邻居发现是ASON控制平面的灵魂,使得在同一层的网元和邻居能互相确定对方的标识,以及与局部端口相邻的远端口的标识
C. ASON路由协议使用扩展OSPF路由协议,仍采用OSPF的扩散和同步机制
D. 目前允许采用ASON+DWDM组网方案,或者ASON和SDH混合组网方案

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