What is the fullform of ECS?

What kind of file has a name that ends with gif? Is b.c.a a software engineering? Is 2.4GHz prone to attenuation in water? Why can't you drag and drop on my computer? What is the dots of light on a computer screen called? How many gb is in a MB? Where can one test the speed of their Bellsouth Internet? Is a pc the same as an all in one computer? What is the stuff called that is put into the computer? Who is the most subcribed person on YouTube? What are the disadvantages of real time information? How did early computer security work? What are the implications of the international nature of the internet? How can I utilize the Wolfram Equation Calculator to solve complex mathematical problems efficiently? What is a zipped computer folder? What is the size of the opening of a switch device box for a single device? Why are output files for the printer normally spooled on disk before being printed? Which two components of a computer should be treated as black boxes and not opened without specialized training? In a computer firm a project team is called together to develop a new product this would probably be an example of what kind of organization? What are areas in which you would like to improve?