Questions

The four main functions of a computer are ::

1. Input,

2. Processing,

3. Output and

4. Storage

Hubs are specified or operate at Layer1 i.e, the physical layer in the OSI model. Hubs regenerate electrical signals. A hub sends data packets (frames) to all devices on a network, regardless of any MAC addresses contained in the data packet.

Ominous is the correctly spelt word in the given options. It means that giving the worrying impression that something bad is going to happen.

Junagadh

In SQL, BETWEEN Keyword is used for ranges like Number Ranges, Date Ranges, etc...

In 1963, the peacock was declared theNational Bird of India because of its rich religious and legendary involvement in Indian traditions.

Most of the emissions of greenhouse gases (GHG) come primarily from burning fossil fuels (coal, hydrocarbon gas liquids, natural gas, and petroleum) for energy use and the major greenhouse gas is of course carbon dioxide (CO2) which comes from burning fossil fuels and land-use change.

But methane (CH4) and nitrous oxide (N2O), which mostly come from agriculture and waste, are also significant GHGs and shouldn't be discounted.