Question: Have just been looking at some old exam papers and came across a question I cannot figure out :

Suppose you have a `2Mbit/s` link alone a wire that is 240,000 miles away. The data travels at the speed of light which is 186,000 miles per second. How long does it take to transfer a `30kb` file from the moon to the earth ? To transfer the file, an initial 2\*Round Trip Time of handshaking must occur.

How can I solve this?

> 
> 240,000/186,000 = 1.29...secs \* 2 =
>  2.58secs = 2 \* Round Trip Time.
> 
> 
> 2MB = 2000Kb.
> 
> 
> 30/2000 = .015secs + 2.58 = 2.595secs.
> 
> 
> 

Is this anywhere close? I have a feeling I should factor in the time it takes to transfer the 30Kb somehow, but I am unsure where to do this.

Answer: 
So you want to check that the text in the image with selenium.
You will need to grab the url of the image, download that image, and put it through an OCR program.

So short answer, not with selenium
Sikuli allows verification of images, or parts of images. I've not tried it, or tried to integrate it with Selenium, but the concepts of what Sikuli can do, looks really good. Take a look at the project here: <http://sikuli.org/>