首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The internet【S1】______millions of computers, all linked together into a gigantic network. Now every computer that is connected t
The internet【S1】______millions of computers, all linked together into a gigantic network. Now every computer that is connected t
admin
2013-06-03
53
问题
The internet【S1】______millions of computers, all linked together into a gigantic network. Now every computer that is connected to the Internet is part of this network and can【S2】______with any other connected computer.
In order to communicate with each other, these computers are【S3】______special communication software. To connect to the Internet, the user【S4】______the computer’s communication software to contact the Internet Service Provider, or ISP. Now an Internet Service Provider is a company that provides Internet service to individuals, organizations, or companies, usually for a【S5】______charge. Local ISPs connect to larger ISPs, which【S6】______connect to even larger ISPs. A Hierarchy of Network is formed. And this hierarchy is something like a pyramid, with lots of small networks at the bottoms, and fewer but larger networks moving up the pyramid. But amazingly, there is no one single controlling network at the top.
How does information that leaves one computer【S7】______all of these networks, and arrive at its【S8】______,another computer, in a fraction of a second? The process depends on routers. Now routers are【S9】______computers whose job is to direct the information through the networks. The data, or information, in an e-mail message, a web page, or a file is first【S10】______into tiny packet. Each of these packets has the address of the sender and of the receiver, and information on how to put the packets back together. Each of these packets then sent off through the internet. And when a packet reaches a router, the router reads its destination address. And the router then decides the best route to send the packet. All the packets might take the same route or they might go different routes. Finally, when all the packets reach their destination, they are put back into the correct order.
A) in turn B) ill-fated C) consists of D) equipped with
E) instructs F) caused G) communicate H) separated
I) destination J) travel through K) broken down L) monthly
M) landed N) expeditions O) specialized
【S3】
选项
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/rrg7777K
0
大学英语四级
相关试题推荐
Themajorityofsmalltoothwhalesarecalleddolphins.Mostdolphinspeciesareabout6ftinlength,themalesaveraging4to
A、Becauseshedidn’tlikethejobanymore.B、Becauseshelookedatthemapwhileworking.C、Becauseshemadeaseveremistakei
TherewasatimewhenredmeatwasaluxuryforordinaryAmericans,orwasatleastsomethingspecial:cookingaroastforSunda
A、Hethinkssheshouldvisithercousin.B、Hercousindoesn’tvisitveryoften.C、Hercousinisfeelingalotbettertoday.D、He
SharksSharksareamazingfishthathavebeenaroundsincelongbeforethedinosaursexisted.Theyliveinwatersallovert
Inthedesertheis______adaptedtotheenvironmentthanweareandfindswatermoreeasily.
RightandLeft-handednessinHumansWhydohumans,virtuallyaloneamongallanimalspecies,displayadistinctleft-orrigh
FirstAidThemainpurposeoffirstaidistoprovidepropercaretosuddenlyiiiorinjuredpersonauntilmedicalhelp
A、Itwasrising.B、Itwaslowering.C、Itremainedunchanged.D、Itwasfluctuating.B细节题。通过浏览选项可知,本题问的是变化趋势。是上升?下降?未变?还是波动?文中关键句子
随机试题
下列不属于公司资本原则的是()
世界上第一台电子计算机称为_________(英文大写简称)。
心室功能曲线反映下列哪种关系
PACS的主要任务是把医学影像以数字化的方式保存起来,当需要的时候能够快速调取浏览和使用;并同时具有图像诊断和图像管理功能;发展至今,PACS系统根据其规模大小可划分为:基于影像科室或某个部门的小型PACS系统,将影像服务扩展到医院的院级大型PACS系统,
《医疗用毒性药品管理办法》规定,收购、经营、加工、使用毒性药品的单位必须健全的制度有
文书校对时,应该()。
材料:材料1:贫困大学生上学的“救急钱”——国家助学贷款在今年走入申贷两难的困境:由于毕业大学生还贷情况不佳,贷款风险凸现,部分高校的助学贷款已经暂停。据了解,不少高校毕业生此项贷款的违约率超过了20%,有的高校甚至达30%~40%
下列关于法律解释的表述,能够成立的有()。
甲以迷信方式恐吓刘某有灾祸,刘某一时慌乱,请甲帮助自己。甲让刘某带10万元现金作“镇邪物”,找法师“消灾”。途中,甲趁帮刘某拿包之机,用书本调换了10万元现金。甲的行为构成()。(2012年单选17)
TheinternationalconferenceofaiddonorstoEastTimorisscheduledon______.
最新回复
(
0
)