Human Factors of XR: Using Human Factors to Design XR Systems
SW2 B
1. Introduction
I introduce how to make High-speed Dial-up
works. The connection speed of dial-up is
limited by the bandwidth of phone lines; but at
the same time, the average file size for Web
content is getting larger and larger. High-speed
dial-up providers can't do anything about the
modem handshake, but they can speed up the
software handshake.
2. Acceleration
The increase in speed varies by machine, but in
some cases it can reduce the handshake by up to
50 percent. High-speed dial-up providers have
come up with some pretty clever ways to open up
that bottleneck. By loading special software into a
server, they turn it into what they call an
acceleration server.
3. Compression
The key element of high-speed dial-up Internet is
file compression. Text and other files that need to
remain perfectly intact during the compression
process use lossless compression. At this point,
the on-the-fly file compression utilized in high-
speed dial-up can't be added to the file types
specified above because of the nature of the data.
4. Filtering and Caching are important.
You can see how caching saves time by avoiding
unnecessary data transmission. Compression and
filtering and caching are the three key steps in
dial-up acceleration.
5. Bottom Line
Advances for high-speed dial-up serve to prolong
the life of dial-up Internet and provide an
alternative for those who are tired of standard
dial-up but not quite ready for the leap to
broadband.
6. Information
This is information for people that want to know
more things. For example, they are how
Telephones Work, how Modems Work, how WiFi
Works, how Web Servers Work, how Broadband
over Powerlines Works. So, we can describe Quiz
here.