Multiple Choice Question (MCQ)
Question: How much copper contains in pyrites ore?
A.
0.15
B.
0.32
C.
0.5
D.
0.45
Correct Answer: 0.32
Explanation
OSI stands for Open Systems Interconnection. It has been developed by ISO – ‘International Organization for Standardization‘, in the year 1984. It is a 7 layer architecture with each layer having specific functionality to perform. All these 7 layers work collaboratively to transmit the data from one person to another across the globe.