Today, we don't have enough time, so speed
is very important.
New technology that connect to network
quickly is called “High-speed Dial-up.”
The handshake protocol is how to modem
connection. Handshake protocol separate two
The first half is the modem initializing the
Internet connection. We can call it “modem
The second half is software handshake.
Not use Acceleration Use Acceleration
Your machine:Hello! Your machine:Hello!
ISP server:Hello. ISP server:Hello. Aren't
machine:I'm John's you John Smith's
server:John who? Machine: Yes! His
Machine:John smith. account number is *****.
Server:I know many John server:OK. Go ahead. You
smith. have access.
Machine:He is your
Server:What is account
server:OK. You have
If you want to show Acceleration
web page, your HTML/Java-based Web
computer need to pages
download many kinds Text
of file quickly! JPG/GIF
Acceleration server E-mail
is very important! NOT Acceleration
But some file don't Streaming media
keep pace Secure Web pages
Acceleration server Music/photos sent as
yet. e-mail attachment
When you type a URL
into the address
bar,you request for
a specific page.
If that page uses
first, your computer
block the pop-up.
It is called
The first time your
browser loads a Web ●Caching
page, it has to load
If the browser saves
the images and text,
then the second time it
loads the same page it
can check for
If image has not
changed, there is no
need to download it
That system is