- People use Facebook to get attention , but we don't care who's reading it because we just want a response.
- Comments make us want to post more and more stuff, even if it is harmful to us.
- Other people can easily get into your Facebook.
- Parents and School block websites like Facebook, so kids think that keeping your things private is a bad thing.
- School Net Security corrupt the system by selling your information to companies and Dictatorships.
- When people get feedback on their posts it immediately makes them want to do better. Games are popular because the result of your actions is shown to you as you play. Eg You run in the middle and you get shot.
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Showing posts with label Networks. Show all posts
Showing posts with label Networks. Show all posts
Monday, April 4, 2011
Facebook Privacy
Tuesday, March 15, 2011
Router
- Router: A router is a device that forwards data packets across computer networks. Routers perform the data "traffic directing" functions on the Internet. A router is a microprocessor-controlled device that is connected to two or more data lines from different networks. When a data packet comes in on one of the lines, the router reads the address information in the packet to determine its ultimate destination. Then, using information in its routing table, it directs the packet to the next network on its journey. A data packet is typically passed from router to router through the networks of the Internet until it gets to its destination computer. Routers also perform other tasks such as translating the data transmission protocol of the packet to the appropriate protocol of the next network, and preventing unauthorized access to a network by the use of a firewall.
The most familiar type of routers are home and small office routers that simply pass data, such as web pages and email, between the home computers and the owner's cable or DSL modem, which connects to the Internet (ISP). However more sophisticated routers range from enterprise routers, which connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone.
Source: Wikipedia
Network Types
- WLAN:A wireless local area network (WLAN) links two or more devices using some wireless distribution method ), and usually providing a connection through an access point to the wider internet. This gives users the mobility to move around within a local coverage area and still be connected to the network.
- LAN:A local area network (LAN) is a computer network that connects computers and devices in a limited geographical area such as home, school, computer laboratory or office building. The defining characteristics of LANs, in contrast to wide area networks (WANs), include their usually higher data-transfer rates, smaller geographic area, and lack of a need for leased telecommunication lines.
- WAN:A wide area network (WAN) is a computer network that covers a broad area (i.e., any network whose communications links cross metropolitan, regional, or national boundaries). This is in contrast with personal area networks (PANs), local area networks (LANs), campus area networks (CANs), or metropolitan area networks (MANs) which are usually limited to a room, building, campus or specific metropolitan area (e.g., a city) respectively.
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