Explain briefly the difference between buffering and blocking.

Please answer the following questions below and keep the same format. This is not an essay.

1.
Name
four examples of secondary storage media other than hard disks.
2.
Explain
briefly the difference between buffering and blocking..
3.
Which
optical disc makes use of red lasers, and which uses blue lasers?
4.
Briefly
explain the differences between seek time and search time. In your opinion, why
do some people confuse the two?
5.
Minimizing
the variance of system response time is an important goal, but it does not
always prevent an occasional user from suffering indefinite postponement. If
you were the system designer, what mechanism would you recommend for a disk
scheduling policy to counteract this problem and still provide reasonable
response time to the user population as a whole? What argument would you use
with the system management to allow your changes?
6.
Describe
how implementation of a RAID Level 2 system would be beneficial to a university
payroll system. In your own words, describe the disadvantages of such a system,
if any, in that environment, and if appropriate, suggest an alternative RAID
system and explain your reasoning.
7.
To
simplify our explanations about magnetic disk access speeds in this chapter, we
use rotation speeds of 3600 rpm and sustained data transfer rates on the order
of one megabyte per second. However, current technology has pushed those
numbers higher. What are current rotation speeds and data transfer rates for
magnetic disks?
8.
Describe
how secondary storage differs from primary storage and give an example of each.

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