a web server
Software that prevents certain webpages from being displayed might be called malware or could be spyware. Sometimes these programs will force the computer to display specific pages rather than the ones that you have requested.
You can use a program called Teamviewer.
It is called a web server, although strictly speaking, the web server is just one of several applications running on the computer.Large web servers, like those serving the pages of very frequently visited web sites, are implemented using large numbers of computers, not just one, and small web servers might be sharing the computer hardware with many other web server applications (a shared server) or other applications such as DNS or DHCP services.
A server is a dedicated computer that delivers information to other computers.
Yes.
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webpages
A website.
Someone who delivers mail is called a mailman/mail woman or mail carrier.
links
xbox
It is called a web browser. There are many different ones. Examples are Firefox, Netscape, Opera, Safari, Amaya, Konqueror, Mosaic.