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Beta Testing First Mobile Internet Satellite Broadband, Part II
We were the first beta testers of a Mobile Command Center with full Internet Access in 1999. Our mobile command center was also the first unit with WiFi and Internet Mobile Access.
The wireless network in my house went haywire. It worked on three PCs, one had a horrible connection, and one can't connect. Between Hubby and me, we spent a lot of time researching and trying to figure out the problem. We narrowed down the possibilities few by doing tests. Hubby is the network king in our house and I learned a bit in working with him. In fact, I solved the problem... temporarily.
The Coming Television Revolution
The revolution is just getting started and will be begin to make its mark this year. By 2010, it will begin to take off. By 2025, it will be the standard for all TV viewing. It's called Internet Protocol Television, or IPTV for short. IPTV works with a set-top box connected to any broadband interface and to a TV. It will allow users to choose among thousands (and eventually hundreds of thousands) of hours of programming, including movies, sports, classic TV, etc., and download their selections from the internet to the hard drive of the set-top box.
Broadband Articles Article:
How Peer to Peer (P2P) Works
Peer to Peer (P2P) Technology- How it works:
Ever wondered how P2P works? This guide will run down most of the major P2P services and how they work. Peer to Peer technology lets people share files over a network on the internet. Most people now use what is known as the second generation of P2P, which is unlike its predecessors like such as Napter, the second generation has no centralized server, making it harder for it to shut down.
How first generation P2P services worked:
A connection is established by a peer finding another peer to connect to. Each peer exchanges active peer and their addresses. When a connection has been established, the user can then search for files. When a search has been submitted, it connects to all nodes on its connection list. The results are then displayed and a connection is made.
How second generation P2P services worked:
Gnutella2: Hubs are used to quickly search for files, eliminating the original "find peer and search" method. Instead, they store a list of files on all the "Leaves" (A peer) that are connected to it, thus dramatically reducing search time. Advantages: Unlike Napster, if a hub crashes, it's network stays alive. Disadvantages: Doesn't make network any more durable than the first generation of P2P. Gnutella2: www.gnutella.com
FastTrack: Programs such as Kazaa and iMesh use the FastTrack protocol. Normal peers connect to a supernode which acts jsut like a hub. Supernodes also connect to other supernodes, allowing search requests to move through the network very quickly. Peers then establish a direct connection to a client after a file has been found. Advantages: Any client can become a supernode. Disadvantages: Corruption of files occur. Clients include: Kazaa (www.kazaa.com), iMesh (www.imesh.com)
BitTorrent: .torrent files are used to store information about the file being shared. Once a torrent file is opened, the client connects to the tracker which tells the client where the file is located and what other peers/seeders there are. BitTorrent works by chunks of small files being transferred (even through multiple connections), while you are downloading. The files are checked for corruption as the download continues. Leechers are people who download and don't upload, and are highly frowned upon on some sites, disallowing them from downloading any further. Advantages: Very fast for popular, new files. Disadvantages: Trackers are unreliable and if it goes down, the file is lost. Clients include: Azureus (www.azureus.com), Shareaza (www.shareaza.com).
EDonkey Network: Edonkey runs on the same principle as first generation P2P, only anybody can become a server. Clients communicate with the server to download files, and random chunks can be downloaded in any order then put together in the end. Advantages: No file corruption, leech penalization. Disadvantages: It can penalize users unfairly. EDonkey: www.edonkey2000.com
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You've set up your Boingo account, you're hanging out at the Home Turf sports bar in LAX and you figure you'll do a little business or check your e-mail while sipping a Chardonnay. Well, that's the point of Wi-Fi hotspots; being able to take care of a few things while in a relaxing atmosphere.
One of the most controversial topics surrounding web hosting is the practice of overselling bandwidth, and rightfully so. The practice of overselling has enormous potential for disaster - ask any webmaster who has ever woken up to a cold, unforgiving "Bandwidth Exceeded" message where his or her site should be. The risk of such outages is all too real, and the cleanup effort for network bandwidth outages is a long and arduous process.