Network Key Terms Essay Example for Free

Network Key Terms Essay The Internet- The global network formed by interconnecting most of the networks on the planet, with each home and company network connecting to an Internet service provider (ISP), which in turn connects to other ISPs. Internet edge- The part of the Internet between an ISP and the ISP customer, whether the customer is a company or organization with a large private TCP/IP network, or whether the customer is a single individual. point of presence- A term used by service providers, particularly for WAN or Internet service providers instead of traditional telcos, that refers to the building where the provider keeps its equipment. Access links that connect the customer device to the WAN service physically connect into the POP. Internet core- The part of the Internet created through network links between ISPs that creates the ability of the ISPs to send IP packets to the customers of the ISPs that connect to the core. Internet access- A broad term for the many technologies that can be used to connect to an ISP so that the device or network can send packets between itself and the ISP. analog modem- A device at the customer and ISP end of an analog circuit, created when one modem calls the phone number of the other modem, with the two modems sending data using the analog circuit. DSL- Digital subscriber line. A type of Internet access service in which the data flows over the local loop cable from the home to the telco central office, where a DSLAM uses FDM technology to split out the data and send it to a router, and split out the voice frequencies and send them to a traditional voice switch. cable Internet- A term referring to Internet access services provided by a cable company, using many components, including a cable modem, coaxial cable, and a CMTS at the cable company head end. default route- In a router, a concept in which the router has a special route, the default route, so that when a rout er tries to route a packet, but the packet’s destination does not match any other route, the router routes the packet based on the default route. host name- A name made up of alphabetic, numeric, and some special characters, used to identify a specific IP host. Host names that follow the convention for domain names in the DNS system use a hierarchical design, with periods  separating parts of the name. Domain Name System- The name of both a protocol and the system of actual DNS servers that exist in the world. In practice, DNS provides a way for the world to distribute the list of matching host name/IP address pair information, letting each company maintain its own naming information, but allowing the entire world to discover the IP address used by a particular host name, dynamically, using DNS protocols, so that any client can refer to a destination by name and send IP packets to that host. Subdomain- With DNS naming terminology, this term refers to a part of a host name (or domain name).That smaller part can be the part that a company registers through IANA or some authorized agency to identify all hosts inside that company. IPv4 address exhaustion- A term referring to the very real problem in the worldwide Internet, which first presented itself in the late 1980s, in which the world appeared to be running out of the available IPv4 address space. classless interdomain routing (CIDR)- One of the short-term solutions to the IPv4 address exhaustion problem that actually helped solve the problem for a much longer time frame.CIDR allows more flexibility in how many addresses IANA assigns to a company, and it helps reduce Internet routing table sizes through route aggregation. Network Address Translation (NAT)- One of the short-term solutions to the IPv4 address exhaustion problem that actually helped solve the problem for a much longer time frame. NAT reduces the number of public IP addresses needed by one ISP customer by using one public IP address for the traffic from many real client hosts. Acronyms: BGP- Border Gateway Protocol CATV- Cable TV CIDR- Classes Interdomain Routing CMTS- Cable Modem Terminating System DSL- Digital Subscriber Line DSLAM- DSL Access Multiplexer FTTC- Fiber to the Curb HFC- Hybrid Fiber Coaxial IANA- Internet Assigned Numbers Authority IPS- Intrusion Prevention Systems ISP- Internet Service Provider NAT- Network Address Translation POP- Point of Presence RIR- Regional Internet Registries RJ-11- Registered Jack 11 SOHO- Small Office/Home Office

Balance Between Sense and Sensibility in Jane Austens Northanger Abbey

Balance Between Sense and Sensibility in Jane Austen's Northanger Abbey Throughout her novel, Northanger Abbey, Jane Austen integrates parody with characterization to emphasize the necessity of a balance between sense and sensibility while reflecting a theme of the initiation of a young woman into the complexities of adult social life. This novel can be traced back as one of Jane Austen's earliest works. It was written in 1798, but not published until 1818, and is an excellent example of what Austen believed a novel should not be. In the work Jane Austen's Novels Social Change and Literary Form, Julia Prewitt Brown states "The evident purpose of Northanger Abbey is to burlesque the popular fiction of her day, to carry its conventions and assumptions to an absurd extravagance" (50.) To achieve her purpose Austen uses parody to portray a comic version of a gothic novel while presenting false emotions of romanticism and concentrating on pure human beings and their mutual reactions. "The writer of the pure novel sets out to delight us not by prodigality of invention, the creation of a large gallery of characters, the alternation of a large number of contrasted scenes, but by attention to the formal qualities of composition, to design, to the subordination of the parts to the whole, the whole being the exploration of the relations between his characters or of their relations to a central situation or theme." (Allen, pp114.) In Northanger Abbey, Austen intended to reflect a contrast between a normal, healthy-natured girl and the romantic heroines of fiction thorough the use of characterization. By portraying the main character, Catherine Moorland, as a girl slightly affected with romantic notions, Jane Austen exhibits the co... ...ne show his sensibility. His imagination and creativity motivate him to read Gothic romances and to indulge in the effects that his inventive tales produce. His decision to marry Catherine is motivated by feelings of love that further exemplifies his sensibility. Throughout the novel the readers see an excellent display of Henry's ability to maintain equilibrium between the two qualities. He passes his knowledge onto Catherine to help her to become a better person. At the end of the novel it is apparent that Henry has taught the keys of his success to Catherine. Works Cited Allen, Walter. The English Novel. New York: E. P. Dutton & Co., Inc., 1954. Austen, Jane. Northanger Abbey. 1818. Mineola, NY: Dover Publications, 2000. Prewitt Brown, Julia. Jane Austen's Novels Social Change and Literary Reform. Massachusetts: Harvard University Press, 1979.

Feral Children Essay

Genie was a modern wild-child, discovered on 1970. She had been isolated from society for something about ten years. When she was discovered, she had suffered from severe social deprivation. Among the problems that were caused by lifestyle she was imposed to, were significant physical problems. According to Ward (2007): â€Å"She had a strange bunny-like walk— she held her hands up in front of her like paws and moved in a halting way. She could not chew solid food and could hardly swallow. She spat constantly. She sniffed. She was not toilet-trained and could not focus her eyes beyond 12 feet. She weighed 59 pounds and was 54 inches tall. † Some of these problems are undoubtedly caused by girl’s extremely limited social interactions. Her habit to spit and sniff, her strange style of walking are caused by lack of social interaction. Normally an average child is surrounded by the adults who give to it plenty of examples as to how to walk, how to do things and how to behave. Toilet-training also is an acquired skill that is learned only in constant interaction with parents or fosterers, i. e. in constant social interaction. Genie’s inability to focus her eyes at objects that were at relatively long distance from her is a result of life in an environment that had almost no visual stimuli, and hence this physical problem is also result of social deprivation. Genie’s inability to chew solid food and swallow, along with her height and weight are rather the result of her food ration than the aftermath of long-term social isolation. Genie’s amazing initial ability to learn human behaviors from those around her is not surprising, because her ability to perceive and learn from the local environment was not satisfied by the poor environment she lived in for many years. And when her environment was significantly enriched with irritants and stimuli, the mind of Genie had awakened from artificial slumber by the potent stream of new information from her sensory organs. Her ability to copy and took part into the physical actions like dressing are explained well by the initial imprinting that was even more efficient than usually due to the contrast between the emotionally and sensory poor environment she used to live in and new enriched with information and interactions environment she went into. As Genie was found and rescued she immediately became the subject of diversified scientific studies that took significant part of her everyday life. This raises the question – was such intensive study of Genie ethical towards her? Considering the conditions that Genie lived in before she was found, considering the fact that scientists tried to spent with her more time than it was necessary to carry out current tests in order to build a sense of family to the girl that never knew what a family is before, it is possible to say that interactions with scientists were beneficial to Genie. She immediately started to advance in a lot of things she never had a single chance to learn before. She had found people that took care of her and emulated the family to her. And whereas the studies she was subjected to had accompanied her interactions with people and were intended to find out if Genie had retained her ability to learn and socialize and how did her long isolation from society affected her, it is possible to say that such an social symbiosis between socially deprived child and scientists is perfectly acceptable. Scientists quickly found out that, despite the long time spent in environment harsh and deprived both of information and emotions, Genie had retained ability and desire for learning and manifested this ability and eager for learning very quickly after being transferred into more favorable environment. This is quite natural. The young organism with inviolate ability to study and learn her local neighborhood, being transferred from the conditions that disfavored any investigative activity to the conditions that encourage observation and learning, started to overtake the lack of information about the local environment. This is perfectly normal because it is natural to any mammal to explore his local environment to find out where the safe places are and where the places to feed and places to be avoided located. This is an instinctive set of actions that guarantees the organism better adaptation to this local environment and, therefore, better chances to survive. To explore one’s local neighborhood is instinctive, and human child is not immune to these instincts. But in humans the ability to learn and the need to explore his neighborhood is expressed much more than in any other mammal, even in other Primates, thus creating more eminent appetite for learning. But the single need for learning for a human is not enough. Need for learning and appropriate conditions to satisfy this need are important of course, but these factors are enough to learn only physical and emotional aspects of human life. As to more abstract components, for example, ability to speak certain language correctly, putting the words into the logical order in accordance with rules of the language, there are more conditions needed, some of them quite specific. Coming back to Genie example: â€Å"One of the last tests †¦ measured what parts of her brain were active as she conducted different kinds of tasks. †¦ There was almost no left brain activity. Her tests looked similar to tests of children who had to have their left brains removed. † (Ward, 2007) This shows how important is socialization in development of activities that are build on logic and that are physiologically bound to activity of the left hemisphere of the brain. On the example of Genie it becomes clear that early socialization is the key to normal development of intellectual skills based on left brain activity, and the deficit of social interactions in these early years can lead to irreversible underdevelopment of skills vitally important to contemporary human. References: 1. Ward, Andrew. (2007). Genie, a modern-day Wild Child. Retrieved September 15, 2008 from http://www. feralchildren. com/en/showchild. php? ch=genie

Book Review and Questions The Walgreens T-Shirt

Preface: Why did the author decide to write this book? She decided to write the book about the Walgreens T-shirt after speaking to anti-globalization activist. She decided to pick a product and track down its full life cycle to see exactly what insights it could provide. What did she expect to find when she began her journey what do most economists believe about globalization? She believed that free trade was more about economics and markets. However, she discovered there were many other factors involved. How does she summarize her finding about markets and the T-shirt? She realized that trade was developed with historical and political webs of influence that are embedded in the market and are often hidden from economist. Part 1 King Cotton American cotton farmers have accomplished an extremely rare thing by keeping a comparative advantage in cotton farming in the US for over 200 years. Explain why this has happened there are two broad categories of reasons. At the end of the section (p. 64 and 65) she uses Thomas Friedmans metaphor of the gazelles and the lions it turns out that American cotton farmers are both. The gazelles win by running faster and smarter than the competition, but the lions win by catching and eating their prey The two reasons are subsidies and technological innovation. Without either of these Texas cotton production would have never survived. How have American cotton farmers insulated themselves from the full strength of MarketShow MoreRelatedManagement Course: Mba−10 General Management215330 Words   |  862 PagesOrganizations, Seventh Edition Cohen Harvard Business Review Finance Articles The Power of Management Capital Feigenbaum−Feigenbaum International Management, Sixth Edition Hodgetts−Luthans−Doh Contemporary Management, Fourth Edition Jones−George Driving Shareholder Value Morin−Jarrell Leadership, Fifth Edition Hughes−Ginnett−Curphy The Art of M A: Merger/Acquisitions/Buyout Guide, Third Edition Reed−Lajoux and others . . . This book was printed on recycled paper. Management http://wwwRead MoreCase Study148348 Words   |  594 Pagesrecording, or otherwise without either the prior written permission of the Publishers or a licence permitting restricted copying in the United Kingdom issued by the Copyright Licensing Agency Ltd., Saffron House, 6-10 Kirby Street, London EC1N 8TS. This book may not be lent, resold, hired out or otherwise disposed of by way of trade in any form of binding or cover other than that in which it is published, without the prior consent of the Publishers. 2  © Pearson Education Limited 2011 Contents AcknowledgementsRead MoreManaging Information Technology (7th Edition)239873 Words   |  960 Pagestextbook appear on appropriate page within the text. Microsoft ® and Windows ® are registered trademarks of the Microsoft Corporation in the U.S.A. and other countries. Screen shots and icons reprinted with permission from the Microsoft Corporation. This book is not sponsored or endorsed by or affiliated with the Microsoft Corporation. Copyright  ©2012, 2009, 2005, 2002, 1999 Pearson Education, Inc., publishing as Prentice Hall, One Lake Street, Upper Saddle River, New Jersey 07458. All rights reserved