Discussion Short Answer

1. What are authentication and authorization?

2. What are authentication and authorization used for?

3. What is Principle of Least Privilege?

4. Are you in favor or against the principle of least privilege? 

5. How many hard drive types are there, how it attaches to computer and give speed comparison from 1 to 5?

6. What is the RAID structure and brief each RAID level key scheme?

7. Please explain the I/O concept in a computer operating system.

8. Please explain the Buffering, Caching, and Spooling in terms of I/O operation.

Justify your your answers and answer in order with using numbers

Please list your reference/s