Transcript: OSI Model - networks Basic hardware components in a network Switch Routers Firewall Hubs Switches One of the newer technologies used in the industry today is server virtualization. Server virtualization allows network administrators to use existing hardware to create new servers for various purposes. Creating virtual servers is more cost effective because it does not require physical hardware beyond what may already exist in a company. This can be ideal for prototyping networks that may not remain over a long period of time. Pros vs. Cons A network's firewall builds a bridge between an internal network that is assumed to be secure and trusted, and another network, usually an external (inter)network, such as the Internet, that is not assumed to be secure and trusted. Server Virtualization Basic networking Network interface cards (NIC) Repeaters and hubs Bridges Switches Routers Firewalls Single point for security compromise unless redundancy implemented. Single point for hardware failure unless redundancy implemented A network switch or switching hub is a computer networking device that connects network segments or network devices. The term commonly refers to a multi-port network bridge that processes and routes data at the data link layer (layer 2) of the OSI model. Knowledge of basic logical diagrams help us gain the baseline understanding of how a network works. Physical diagrams, though, can look much different and Jay is going to discuss how a network can look different physically yet still function the same logically. A hub functions as the central connection point of a network. It joins together the workstations, printers, and servers on a network, so they can communicate with each other. Each hub has a number of ports that connect it to the other devices via a network cable. A router re-writes layer 2 headers. Network devices at each level of OSI model: Transport Layer – firewall Network Layer – router or layer 3 switch Data Link layer – switch Hubs don’t allow for separating collision domains. Hub network Routers Pros vs. cons A router doesn’t pass broadcasts. Unified Threat Management A switch separates collision domains. It only sends packets to a certain port. Documenting a Real Network Logic vs. physical diagrams Bridges A computer network is a collection of computers and other hardware components interconnected by communication channels that allow sharing of resources and information Easy creation and disposal of workstations increased data security single interface for managing networks resources Less cables to arrange Easier re-imaging and back up of worstations Single point of intrusion increased downtime when server down for maintenance because more than one VM on one device includes: Antivirus Firewall Spam filter Content filtering an OS Uses layer 2 (MAC addresses) to manage and control traffic. Traditional bridges support one network boundary, whereas switches usually offer four or more hardware ports. A bridge can divide a network to isolate traffic or problems. Can expand the distance of a segment Provides for an increased number of computers on the network Routers work at the Network layer of the OSI model meaning that the Routers can switch and route packets across multiple networks. Reduced complexity: Single security solution. Single Vendor. Single AMC Simplicity: Avoidance of multiple software installation and maintenance Easy Management: Plug & Play Architecture, Web-based GUI for easy management Reduced technical training requirements, one product to learn. More sophisticated than a hub Greater potential to expand network filters the data packets, and only sends the packet to the port which is connected to the destination address of that packet (using routing tables) Can support multiple simultaneous conversations Full duplex mode – send/receive at same time A hub accepts a frame and sends it out every port except the one it came from. One device talks at a time. Jay Davis Lisa Smith Aaron Calder Bridges The history of networking suggests that the future is full of advanced technology and amazing application possibilities. Client and server virualization
Transcript: Go on Exchange present your country abroad Work with different mentalities Diversity Explore different cultures Be a Member Develop your skills Have an impact Enrich your knowledge AIESEC Be a Leader Lead your team Achieve your vision Coach others Be a mentor EXPERIENCE YOUR AIESEC JOURNEY Gives you a great experience
Transcript: Wireless Access Point When acquiring hardware for wireless networks, there are a number of factors which must be considered. These include: Compatibility Usability Internet Service Provider (ISP) Functions of a Wireless Network Allows you to connect to internet Wireless Networking Adapter Allows you to share information directly (e.g. Social Networking) An external module that plugs into a USB port Electronic devices that allow computers to connect to the Internet and to other computers without using wires Has to obtain signals from inside the computer, change them into radio waves and send them out via an antenna For desktop computers, the adapter may be on a PCI card Wi-Fi adapters provide wireless connectivity to the local area network (LAN). Gives device access to printers, scanners and other hardware Belkin Wireless Router Wifi Virus Protection Any portable device with a network can connect to wireless network Network Presentation By Will Waters Firewall Factors for acquiring the correcr hardware Sharing data (e.g. documents saved on one computer) Specially configured devices on wireless local area networks (WLANs) Act as a central transmitter which receives wireless radio signals including Wi-Fi Wireless routers for home networks include built-in access point functionality as part of the device Differs to a wireless router because it does not have firewall functions, and will not protect your local network against threats from the Internet Xbox Wireless Network Adapter No wires or cables are required Software or hardware-based network security system Controls the incoming and outgoing network traffic Establishes a barrier between a trusted, secure internal network and another network Many routers that pass data between networks contain firewall components and, conversely, many firewalls can perform basic routing functions.
Transcript: 14th Week Consulting interns can be expensive Time and Money Personal Experience Preliminary Design Stage NFPA 101 and NFPA 13 New and Existing Education, Business, and Mercantile Definition of Project This app would be used to provide interns and recent graduates with an outline of guidelines for how to design and review designs of specific occupancies. With the given time frame, I will be writing the information that will go into the app Begin parametric study: Speak with my mentor and Jason to understand more about what critical variables I could concentrate on for this app. Choose those parameters and begin my study Gather information from NFPA 101 and NFPA 13 for new and existing education, business, and mercantile occupancies. By: Breanne Thompson Next Steps (Continued) Finish preparing for Draft of Analysis Pull together and discuss results of project Draw my conclusions and state future work needed Turn in Final Paper! 10th and 11th Week Turn in my parametric study Begin draft of analysis Map out the process of the app for the key elements 15th Week References Next Steps 7th Week Prepare for Final Presentation Summarize my draft of analysis into presentation Work on how to incorporate a live demonstration for my presentation App Development Background Information 8th-9th Week Continuous Process Objective-C for Apple products Java for Android products 6 months of studying Places to Learn: Codecademy, iOS Dev Center, Android Developers Training Hire App Developer will cost thousands Prepare Final Paper Dive into Shark Tank! 1. http://lifehacker.com/5401954/programmer-101-teach-yourself-how-to-code 2. http://www.bluecloudsolutions.com/blog/cost-develop-app/ 6th Week Background Presentation 12th-13th Week
Transcript: Real action and accountability Amnesty International Non-state actors/ Rebel Groups?? ...and what about men?? ignoring male rape victims? would rape exist without a man? Weapons of War: Rape UN as an Arena - NGO's - Discussion and dialogue Arena Instrument Actor Critical Thinking Weapons of War: Rape UN as an instrument UNSC Resolution 1820 (2008) UN as an Actor - UN Action Against Sexual Violence in Conflict Weapons of War: Rape Problems with 1820 "Roles and Functions of International Organizations" "Sexual violence, when used as a tactic of war in order to deliberately target civilians or as a part of a widespread or systematic attack against civilian populations, can significantly exacerbate situations of armed conflict and may impede the restoration of international peace and security… effective steps to prevent and respond to such acts of sexual violence can significantly contribute to the maintenance of international peace and security" (UNSC Resolution 1820, p. 2)" http://www.stoprapenow.org/uploads/advocacyresources/1282164625.pdf Background Presentation- Kristin Mann Weapons of War: Rape Brief Insight - used to manipulate social control - destabilize communities - weaken ethnic groups and identities Examples: - Sudanese Militia - Rwanda Genocide - DRC Critical Thinking http://www.womenundersiegeproject.org/blog/entry/the-need-for-numbers-on-rape-in-warand-why-theyre-nearly-impossible-to-get Critical Thinking Increased Data Collection by international organizations - determine humanitarian responses - ensures justice and reparation - provides recognition and dignity
Transcript: 8/11/2012 University of Technology Sydney Yuxiang HE 11377520 Jing LI 11440233 Peng LI 11365741 Yi LI 11476355 Outline • Logical design – Subnetting(1) – Routing protocol(1) – Connect to KH,SCU, JH(1) • Physical design – Wireless design(2) – Qos and Management(2) – Security(2) Epping Hospital Network Design
Transcript: Greece ΡRethymno, Crete 4 C I T I E S ? - Religion & Political Theory - Theories of Democracy - Social Theory: K. Marx - M. WeberΣοψι - Plato's Republic - State & Regulation - State & Public Policies - Urban & Regional Policies 6-month voluntary teaching of Greek language to migrant kids (primary school) Constantinos Kogiomtzis Background Presentation Magouliana, Arcadia Vienna ΑλεχανδροθπολισAlexandroupolis, Thrace Customs broker Political Science - Political Theory - Public Policy - Political Economy (Thesis: "Debate between structural and instrumental Marxism on the State: Miliband vs. Poulantzas") Transport company department of exports & customs clearance Thank you for your attention!!! Istanbul Istanbul - a city with rich heritage and diverse population - currently under rapid transformation - large-scale projects (gated communities, business centres, malls, touristic developments) # environmental threats, segregation, gentrification of inner-city - motivations/socioeconomic consequences of grassroots resistance movements to the new urban regime. Property transfer and displacement. Physical upgrading or improvement of the inhabitants' living conditions?
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