...Fall 2006, Syracuse University Lecture Notes for CIS/CSE 758: Internet Security Routing Protocols (1) Introduction Static routing versus dynamic routing Static routing Fixes routes at boot time Useful only for simplest cases Dynamic routing Table initialized at boot time Values inserted/updated by protocols that propagate route information Necessary in large internets Routing with partial information The routing table in a given router contains partial information about possible destinations For the unknown destinations, forward them to the default router. Potential problem: some destinations might be unreachable. Original Internet and the problem if the core routers are allowed to have default routes. Core routing architecture with single backbone. Assumes a centralized set of routers that know all possible destinations in an internet. Non-core routers use the core routers as their default routers. Work best for internets that have a single, centrally managed backbone. Inappropriate for multiple backbones. Disadvantage Central bottleneck for all traffic Not every site could have a core router connected to the backbone: how do they get routing information? No shortcut route possible: non-core routers always forward their traffic to the default routers even though another core router provides a better route. This is because the noncore routers do not know which one is better without full knowledge of all possible destinations...
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...Pros and Cons of Social Networking These days the social networking sites have become extremely popular among the youth as well as the professional people. Keeping in mind, the growing popularity of these sites and the effect it has and the benefits that it brings along, it can be easily predicted that its popularity is sure to grow much more. Some of the sites such as Friendster and MySpace are the two most popular sites that aim to build special niche for people who share common interests and passions. Whereas social networking sites such as Twitter and LinkedIn are more professionally related and help the business men promote their businesses. However, everything has a positive and negative side. Similarly, the social networking sites are also made up of their set of pros and cons. Analyzing The Pros of social networking: The social networking websites are more like the virtual meeting places where people can just chill and hang out with friends. They can discuss on different topics, share information, and exchange files and pictures. There are some people who use these sites as a platform to meet long lost friend and batch mates, whereas there are others for whom it becomes a bridge to meet their future love. You can either reconnect with your friends and family members or search a dating partner. Some people also use these websites to promote their blogs and services. The professional people uses this as a medium to raise their visibility, get noticed, tell about their...
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...essential to uninhibited company growth. The first diagram included shows the original company network design of 10 workstations connected to a single stackable switch. Business growth depends in part upon the company Internet web server and database server. The network’s initial flat topology, with workstations and servers connecting in a peer to peer fashion using a single ADSL line for Internet access was very limited. However, the current stackable network switch design has enabled IT staff to upgrade network infrastructure in order to keep up with company growth. The stackable design has provided no negative impact during upgrades to the 100 workstation network along with deploying services required to maintain an efficient, secure networkin which Active Directory with single sign-on, DNS, DHCP, and file sharing have replaced the former peer to peer design. Currently the company is risking potential data loss along with performance issues directly related to the network working at maximum capacity. The good news is that our company growth has exceeded network capability. So, in consideration of the company’s success and growth rate, and 100 personnel in the new remote office, the company network should move to a three-layer hierarchical model. The three-layer model will result in increased network performance, redundancy, and scalability that can accommodate continuing sustained company growth. Workstations will be connected to Access Layer stackable switches, saving cost...
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...Perubahan adalah suatu keniscayaan. Oleh karena itu mengelola perubahan adalah suatu keharusan. Di era dinamis seperti saat ini, interaksi dan korelasi langsung antara suatu entitas organisasi dan lingkungannnya berjalan dengan sangat cepat, bervariasi, dan bersifat multidimensif. Organisasi yang sukses biasanya diwarnai dan dicirikan oleh kemampuannya menempatkan diri di tengah-tengah dinamika lingkungan melalui kapasitasnya bermanuver terhadap tuntutan pergerakan dan pergeseran lingkungan internal-eksternalnya serta kemampunnya mengendalikan perubahan. Sebaliknya, organisasi yang gagal biasanya menghadapi kompleksitas sindrom eksistensialnya karena ketidakmampuan menjawab tuntutan dinbamika lingkungan melalui strategi pemosisian system organisasionalnya ke dalam system yang lebih besar. Tantangan eksistensial yang dihadapi oleh suatu entitas organisasi tidaklah sekedar berhenti pada upaya menciptakan dan menghadirkan Konsep Berorganisasi yang hebat saja, namun juga akan sangat terkait dengan upaya kontekstualisasi konsep tersebut untuk menjawab tantangan eksistensialnya. Persentuhan organisasi dengan isu-isu kontekstual yang sangat diamis itulah yang menyebabkan apakah suatu organisasi mampu bertahan hidup untuk jangka waktu panjang, atau akan segera mati dan hilang dari komunitas lingkungannya. Dalam tataran praksis, kebutuhan pengembangan organisasi sebagai syarat agar tetap eksis tidak terlepas dari kemampuan Manajemennya untuk mengelola setiap kebutuhan perubahan yang...
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...SOCIAL NETWORKING: EPEKTO SA KOMUNIKASYON SA PANANAW NG MAG-AARAL SA IKATLONG TAON SA KOLEHIYO NG KOMUNIKASYON NG POLITEKNIKONG UNIBERSIDAD NG PILIPINAS TAONG ARALAN 2011-2012 Bilang Pinal na kahingian sa Asignaturang Pagbasa at Pagsulat tungo sa Pananaliksik (FILI 2023) Ang mga Mananaliksik De Jesus, Von Denise B. Guevara, Risheill D. Hife, Eliene M. Latigar, Dianne M. Losaria, Jonathan L. Lumanta, Koryn M. Mendoza, Shekinah Marie, D.C. Miranda, Junel N. Velasco, Princess Ivy M. PEBRERO 2012 KABANATA 1 Ang Suliranin at Kaligiran ng Kasaysayan PANIMULA Ang tao, mula pa noong una, ay may sistema o kaayusan na sa mga bagay-bagay. Ang tao ay isang espesyal na nilalang sapagkat sa lahat ng uri ng nilalang na nabubuhay sa mundo. Tanging ang tao lamang ang may kakayahang mag-isip at i-uri ang tama sa mali, makaintindi, makaunawa at marami pang iba. Isa sa mga salik upang magkaintindihan o magkaunawaan ang bawat tao ay ang pakikipagtalastasan o pakikipagkomunikasyon sa pamamagitan ng tinatawag na wika. Ayon sa wikipedia, ang komunikasyon o pakikipagtalastasan ay ang pagpapalitan ng impormasyon sa isang tiyak na sistema ng mga simbolo, isang payak na paliwanag. Ilan sa mga iskolar at matatalinong tao ang nagbigay pa ng konkretong pagpapakahulugan sa wika at sa komunikasyon. Ilan sa kanila ay sina Archibald Hill, Henry Gleason, Sapir, Aristotle, Alcomtiser, Reynaldo Cruz, at marami pang iba. Ayon kay Archibald Hill, ang wika ay isang anyo ng simbolikong pantao...
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