Questions

MAC - Media Access Control, address is a globally unique identifier assigned to network devices, and therefore it is often referred to as hardware or physical address.

MAC addresses are 6-byte (48-bits) in length, and are written in MM:MM:MM:SS:SS:SS format.

We know that,

Mass of Carbon = 12 gms

Mass of Oxygen = 16 gms = O2 => 16 * 2 = 32 gms

=> Mass of 1 mole of CO2 = 12 + 32 = 44 gms.

Data Control Language (DCL):-statements to take care of the security and authorization.

Examples:

1. GRANT


2. REVOKE

A database that contains multiple tables related through common fields.

A common field is a field of data that is shared among all forms in a database. Without them, it would be difficult and/or time-consuming to create other forms.

The decentralization system was recommended by Balwant Rai Mehta.

Norway is the top most country in the world's happiest country's list 2017 and India ranks 122nd in the list below than the Pakistan and Bangladesh.