EVERYDAY SCIENCE

Detailed explanation-1: -Essay on Environment – All living things that live on this earth comes under the environment. Whether they live on land or water they are part of the environment. The environment also includes air, water, sunlight, plants, animals, etc.

Detailed explanation-2: -Physical infrastructure includes power, backup generators, Heating Ventilating and Air Conditioning, surge control systems, connectivity (cabling), hardware, software, and people.

Detailed explanation-3: -Software as a Service (SaaS) is a software licensing model, which allows access to software on a subscription basis using external servers. SaaS allows each user to access programs via the Internet, instead of having to install the software on the user’s computer.

Detailed explanation-4: -Systems administration is the field of IT that’s responsible for maintaining reliable computers systems in a multi-user environment. In this course, you’ll learn about the infrastructure services that keep all organizations, big and small, up and running.

Detailed explanation-5: -This category includes data centers, servers, network hubs, routers, and computers (as well as laptops, tablets, mobile devices and other “network endpoints").