Captcha definition – Why are you asked to type the two words?

It is very difficult to figure out the purpose of the mixed-up wavy letters in the two words. I think I have them right, in fact, I know I do in some cases. Please explain the point to me.
Anne Lawson

Why are the two words one is required to type when registering always so fancy in design? It’s hard to read them.
Maja Novak

What is Captcha? Definition and a super quick intro

Anne and Maja are referring to what is known as Captcha, or more correctly, Text CAPTCHA. Nowadays you find them almost everywhere on the net… both popular and the not-so-famous web sites and blogs. And there is one right on this page – scroll down to check it out.

Captcha is a type of challenge-response test used in computing to ensure that the response is not generated by a computer (source Wikipedia). In layman’s terms, the aim of the text Captcha is to offer a puzzle which only humans are able to solve. Typically, text Captcha has a set of randomly generated alphanumeric characters that are wavy, battered, crossed with lines and / or close to each other (almost overlapping).
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Web site control and ownership

I have a domain name and a working website on free hosting at the moment. I intend to upgrade to a better form of hosting. However, the problem I have is a breakdown in communication with the person who put my site for me. He seems to be able to tweak and change things as and when I want him to, although can leave me waiting. And for this reason I want to take control of my business and site, so to speak. However, he hasn’t been very forthcoming and I don’t know what to do. I have feeling he doesn’t want to hand over web site control! I really want the web site control and ownership – can this be done? And would I be able to do changes and tweaks etc. once I have upgraded hosting and maybe purchase a web package?
A. H.

A professional ‘web site‘ consists of a domain name, the web hosting account and the actual web site files (web pages and other multimedia files). The ownership and the control of these can lie with different individuals. Once you consider these three ‘segments’ as individual entities, understanding web site control and ownership becomes easy to explain and to grasp.
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Links not working on web site

I have only recently started learning to make a web site. I prepared everything on my computer and then uploaded the files on the server. But now the links are not working. Also the images are not visible. Everything seems fine on my computer so why am I facing this problem on the server?
Jerome Taylor

Though I assume the site was developed on a computer running Windows, most of the troubleshooting tips for the problem of links not working would also be applicable for users on other operating systems. Based on my teaching experience, there can be many reasons why things seem fine on your local system but the hyperlinks do not work on the server. Keep your mind open to possibilities of small errors and do go through these tips thoroughly – do not take things for granted.
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end of document in prolog – Error in HTML validation

Surprisingly I got a end of document in prolog error from my trusted HTML validation service – the W3C validator located at validator.w3.org. Obviously, I had no idea what the error was… and as far as I was concerned, the document shouldn’t have had any. I checked the document thoroughly and ran the validation a second time – no luck. I got the error again.
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Images not displaying on web site

Your website is indeed very informative… I would be very thankful if you could kindly clear my confusion. My website looks fine when I tested on my computer but when it is loaded at the server and viewed later using IE, some images are not displayed on the web site. I tried with both the GIF ang JPG format. Before loading the pages everything is fine… is this a problem with my pages/images or the server?
Lawma

This is a very common problem faced by budding web developers. Things work fine on the local computer but when uploaded to a server, the images just do not display on the web site. To be truthful, I too had a brush with this issue… a decade ago. Anyway, here are some troubleshooting tips to help you get the images displayed on the web site when its loaded from the server.
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