Connection Speed• Dial-upWhat is it – Dial-up is a form of Internet access. Dial-up uses telephone network facilities. It allows you to connect to the Internet through telephone lines. connectivity is often the only one available in rural or remote areas for a dial-up connection. You need a modem if you are using your phone, the internet connection will be lost until a few minutes after the phone is turned off. Dial-up is about 150 times slower than broadband, which means web pages will take minutes rather than seconds to load. If you try to watch a video on dial-up, the web page will most likely say that it can't see it or it will run very slowly and be of terrible quality, for example the sound will not move with the picture and the video will be buffered a lot. Connection speed is 56 KB. • BroadbandWhat is it – Broadband is used by most people in the UK through different internet service providers, different providers offer different speeds at different prices different if Virgin offers 10 pounds per month for a certain speed, another company may offer it at a higher or lower price than Virgin for the same speed. The benefits of broadband are that you can access many more websites without any problems, you will also be able to watch things without buffering or without playing them at all. This makes broadband performance much better than dial-up because not only will you be able to access more data, but you will also be able to be online while the house phone is in use. Broadband speed is 16MB to 38MB • Mobile (EDGE, 3G, 4G) Edge, 3G and 4G allow people to use the Internet on the go via mobile phones, tablets and other Internet-accessible devices. – EDGE stands for Enhanced Data R...... middle of paper ...... format web designers need to create a web page to be able to allow the different formats for videos, audio and images, otherwise This may crash the browser or web page. If the website does not allow a certain file type, it will not work and will display an error message. Different file types do different things and if you have an image in a certain file type, you might be disappointed with the sample image. GIFs contain only 256 colors and are effective for compressing simple images, while JPEG files will be better for photographs because they contain millions of colors and are therefore optimized for more complex images. Additional Technologies Ajax is a group of technologies and techniques used client-side to create web applications capable of sending and retrieving data from a server without interfering with the display and operation of the existing page.