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请根据下图所示网络结构回答下列问题。 如果将172.0.35.128/25划分为3个子网，其中第一个子网能容纳55台主机，另外两个子网分别能容纳25台主机，请写出子网掩码及可用的IP地址段。(注：请按子网顺序号分配网络地址)。
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Continue to Protect or Destroy Ecosystem Biosphere Ⅱ was a spectacular failure. The gleaming glass-and-concrete habitat sprawling across the desert in Oracle, Arizona, was supposed to support eight human "biospherians" for two years. But the seal has to he broken before the experiment ended in 1993. Oxygen had fallen to levels normally seen at an elevation of 17,500 feet. Nitrous oxide had risen to the point where it threatened to cause brain damage. The fresh water supply became contaminated, and vines smothered (厚厚地覆盖) food plants. Insect pollinators (传授花粉的生物) and many other species became extinct. By the end, Biosphere Ⅱ was overrun with swarms of ants and cockroaches. Scientists who gathered recently to review the Biosphere Ⅱ experiment reached a disturbing conclusion: "No one yet knows how to engineer systems that provide humans with the life-supporting services that natural ecosystems produce for free." The problem is that these ecosystems are undergoing wrenching changes. Water and air quality, while improving in some regions, are deteriorating in many others. Carbon dioxide levels in the atmosphere arc climbing. The world’s population could reach 10 billion by 2050. And famed Harvard biologist Edward O. Wilson says the current rate of species losses puts us "in the midst of one of the great extinction spasms (突然进发) of geological history." All of which makes many ecologists wonder whether humans too will soon become extinct. It’s an incredibly important but incredibly difficult question. If we continue on this course, we’re heading for a world in which we will have to engineer services we’ve always received for free from nature. That’s why the failure of Biosphere Ⅱ was so disturbing: it proves that we don’t yet know how to do that. The Biosphere Ⅱ experience demonstrated that maintaining human life is a tricky proposition-especially if we can no longer rely on the services provided by natural ecosystems. If we are currently living through a mass extinction, as Wilson believes, we should consider the past. In the great Permian extinction 245 million years ago, 96 percent of species perished. Eventually, the Earth was repopulated with a rich collection of new species, but it took 100 million years. "That should give pause to anyone who believes that what Homo sapiens (现代人) destroys, nature will redeem," Wilson says. "Maybe so, but not within any length of time that has meaning for contemporary humanity." The message the author wishes to convey in the passage is that ______.
请根据下图所示网络结构回答下列问题 填写路由器RG的路由表项。 目的网络/掩码长度 输出端口 ______ S0(直接连接) ______ S1(直接连接) ______ S0 ______ S1 ______ S0 ______ S1
[说明]IT外包是指企业将其IT部门的职能全部或部分外包给专业的第三方管理，从而集中精力发展企业的核心业务。选择IT外包服务能够为企业带来诸多的好处，如计算机系统维护工作外包可解决人员不足或没有的问题；将应用系统和业务流程外包，可使企业用较低的投入获得较高的信息化建设和应用水平。依据某研究数据，选择IT外包服务能够为企业节省65%以上的人员开支，并减少人力资源管理成本，使企业更专注于自己的核心业务，并且可以获得更为专业，更为全面的服务。因此，外包服务以其能有效减低成本、增强企业核心竞争力等特性受到越来越多企业的青睐。IT外包成功的关键因素之一就是选择具有良好社会形象和信誉、相关行业经验丰富、能够引领或紧跟信息技术法的外包商作为战略合作伙伴。因此，对外包商的资格审查应从技术能力、经营管理能力和发展能力等方面着手。具体而言，应包括外包商提供的信息技术产品是否具备创新性、开放性、安全性、兼容性；外包商是否具有信息技术方面的资格认证，如软件厂商证书等；外包商的领导层结构、员工素质、客户数量、社会评价；外包商的项目管理水平；外包商所具有的良好运营管理能力的成功案例；员工间团队合作精神；外包商客户的满意程度；外包服务商财务指标和盈利能力；外包服务商的技术费用支出合理；等等。IT外包有着各种各样的利弊。在IT外包日益普遍的形势下，企业应该发挥自身的作用，应该重视外包商选择中的约束机制，应该随时洞察技术的发展变化，应该不断汲取新的知识，培养企业内部良好的IT学习氛围等，以最大程度保证企业IT项目的成功实施。 [问题3] 外包商资格审查的内容之一就是其经营管理能力，请简要说明外包商的经营管理能力具体应包括哪些方面
[说明]近年来，中国IT外包产业发展迅速。据有关资料介绍，中国将成为继印度之后新的外包产品中心。企业应将外包商看作一种长期资源，并管理好与外包商之间的这种关系，使其价值最大化，这将对企业具有持续的价值。 [问题2] 外包合同关系可被视为一个连续的光谱，其中一端是______，在这种关系下，组织可以在众多有能力完成任务的外包商中进行自由选择，合同期相对较短，合同期满后还可重新选择；另一端是______，在这种关系下，组织和同一个外包商反复制订合同，建立长期互利关系；而占据连续光谱中间范围的关系是______。
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