benefits of packet switched data network(PSDN)?
597302
"The outstanding advantage of the PSN is that the two correspondents can communicate at different rates, permitting much more efficient use of the communication channel."
132182
A hub allows any number of devices to send/receive data packets at the same time.  It is a "dumb" networking device, providing no traffic management features.  As a result, its efficiency is reduced for each connected device that is attempting to communicate.  It's an "everyone sends, everyone listens" setup.  An anaolgy would be a old "party line"-style telephone system where you share a single phone line with several of your neighbors.\n\nA switch manages network traffic by directing traffic between networked devices communicating with each other.  This results in greater amounts of total bandwidth being available to all connected devices.  A corresponding analogy is private phone lines where you establish a direct connection to the person you're communicating with.\n\nSome switches are better than others at managing traffic and offer more features than just basic switching.  These are usually most useful where there are a dozen or more connected devices.
44110
check this link: http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_data_sheet09186a0080091b09.html
162802
hey dude, why u can't select best answer.\npngarrett is true,\nbut there is need of explaination.\nlet me explain.\n\nBoth ethernet hub and ethernet switch have allmost same function, they connects many computers but the main difference is that, switches stores ur MAC address but hubs doesn't.\nThe benefit of storing the MAC address is that, if u sends a data to a computer and there is many computers between them, but the data only goes to that computer, because the switch have a storation, that this ip address is assign on this MAC address (computer).So traffic makes faster. HUB has not amy facility of MAC address assigning. If u send a data to a particuler system, but it goes to all system and traffic becomes heavy.
4403
Data network, video network and voice network all in one.\nUsually, this refers to phone system which runs on ethernet network (type of VOIP).\nThe idea is that there is reduced cost in maintaining only one network.
1109730
well if you are able to choose the transport protocol TCP will resend packets if one is dropped it also makes a connection where udp does neither of these mostly used for DNS lookups and streaming video and stuff
738138
If you're using Windows XP, then you can arguably get by with the firewall that's built in.  Info is available here: http://www.microsoft.com/windowsxp/using/networking/security/winfirewall.mspx\n\nDepending on your network configuration, your DSL Router can also offer some benefits (most hardware routers offer SPI filtering). \n\nIf you have an old computer lying around you can also have it function as a firewall with linux: http://www.coyotelinux.com/products.php?Product=coyote\n\nAgain, it all depends on what you have available and the specifics of your computer.
115788
Well, why a router? A routers function is to know where to deliver the packets. Is best use to route heavy traffic from locations. Installing a router will let you hit the "PC Farm" but the packets traveling to the destination will still need to go there. Unless processing time is increased on the servers where the 3D data is stored I see no real advantage of going with a router. Using a good switching backbone can help reduce time also.
554120
such software is very rare, although server programming have "chunk delivery" to control general delivery. Controlling individual user connection is almost unheard of.  In the end, buying more bandwidth might prove to be cheaper than any other specialized configurations.
733151
"In May, 1974, the Institute of Electrical and Electronic Engineers (IEEE) published a paper titled "A Protocol for Packet Network Interconnection." The paper's authors -- Vinton Cerf and Robert Kahn -- described a protocol called "TCP" that incorporated both connection-oriented and datagram services.\n \n It soon became apparent to the two men that this design should be subdivided into two separate protocols. Session management was not easy to do in an application-independent way. In practice, an application could sometimes run more efficiently or be implemented more easily when it managed network connections itself. "TCP" became Internet Protocol (IP) that supported datagrams and Transmission Control Protocol (TCP/IP) that added connection semantics as a layer on top of IP".
567309
Lots of bemefits:\n\n1.Sharing files\n2.Exchanging e-mails\n3.World wide web\n4.............\n\nThese are only some of the benefits.............of networking\nhttp://www.extension.iastate.edu/agdm/livestock/pdf/b3-42.pdf
829106
very good have been using it for two months now...very nice sometimes the router times out though and needs to be rest.. but apart from that no connectio issues and very quick... highly recommended i think (incidently i got the £10 a month package)\n\nJames
917517
It isn't, actually.  You're comparing apples and oranges here, though.\n\nTerminal Services allows the application to run on a server and display the desktop on your computer.  Only the video stream updates, keyboard inputs and mouse movements go across the network.  The advantages to terminal services are low bandwidth requirements and low client side processing load.\n\nA VPN allows you to access a secure private network across the insecure internet.  Common connections include site-to-site where two networks are connected across the internet and road-warrior where a VPN client is installed on your machine and you use that to connect to the private network.  The primary advantage to VPNs is the lower cost of connectivity compared to a dedicated circuit while providing the same level of security as a dedicated circuit.\n\nWhile it is technically possible to put up a Terminal Server on the internet for users to access it is not a wise idea.  You get some security by limiting access to users with user IDs and passwords on the system but the system itself is still vulnerable to attack.  Using a VPN with a Terminal Server is the way to go if you wish to allow users to connect remotely across the internet.  That way you get the security of a VPN and the low bandwidth and low client processing load of Terminal Services.
102590
Ping can be used to see if another server is running or to measure the distance to another servers. It is short for Packet Internet Groper. A utility that forwards data packets to check the quality of a link or verify the connection of a machine to the Internet.\n\nThe domain name system (DNS) is the way that Internet domain names are located and translated into IP (Internet Protocol) addresses. A domain name is a meaningful and easy-to-remember "handle" for an Internet address. Because maintaining a central list of domain name/IP address correspondences would be impractical, the lists of domain names and IP addresses are distributed throughout the Internet in a hierarchy of authority.\n\nwhile\n\nA DSN stores the data source information necessary for the Driver Manager to connect to the database. This can be configured either through the ODBC Administrator or in a DSN file. On Windows, the information is called a system or user DSN and is stored in the Registry. Data source information can also be stored in text configuration files, as is the case on UNIX.
876064
It depends..\nDCHP Pros\nOnce you set it up correctly you won't have to go to each new computer you join to your network. Easy to maintain..\n\nCons.\n-Anyone can be associated along\n-Sometimes if your DCHP server (router) gets too busy you might suffer problems of re-association and that would cause problems\n\nStatic Addressing:\nPros: \nMore control (some Applications will have trouble with dynamic IP)\nCons:\nYou should do it by manually (making sure you have the IP , gateway, network mask set as correct) for every new device you plug in.\n\nI would recommend Static IP assignment (if you have a limited number of devices and don't change frequently), you can even add some more security with it (create an access control list of allowed IPs only within your router for example), besides browsing around the network neighborhood would be less problematic with network shares and so on.
662828
The implementation I have used is for computer to computer transfers when no other network is available.  \n\nI used this protocol to transfer files from an old computer being put out of commision to a new computer.  \n\nReally don't see much other use for it.  No permanant uses anyway, it's too unstable.  You have to have a crossover cable to be able to use this protocol.  Then you just plug one end to one computer's Network card and the other to the other, no routers or hubs needed.  Good for temporary use, not much else.
7135
DynDNS offers a good free Dynamic DNS service.