Answer the questions below thoroughly and completely (one sentence answers will

Question

Answer the questions below thoroughly and completely (one sentence answers will not be sufficient). Use your own words (this is not a Google copy and paste exercise). Submit answers for the assignment in this worddocument via BlackBoard / Assignments.  Assignments without names will not be accepted/graded.  

1.

What is a computer peripheral device? Provide 5 examples of peripheral devices that an OS must manage.

2.

Describe each of the 3 peripheral device types: dedicated, shared and virtual.

3.

What is device management? What are the 4 main functions involved in device management?

4.

What is a RAID? Briefly describe how RAID works.

5.

What 3 problems/issues must the OS resolve in terms of communication among devices? How is each resolved?

6.

What are the 3 software components that the OS uses to handle I/O requests?  Briefly describe each.

7.

Compare and contrast Sequential Access Storage devices and Direct Access Storage Devices.

8.

Identify and briefly describe the 3 categories of Direct Access Storage Devices.

9.

What is DASD Access Time? Identify and describe 3 factors discussed that impact DASD access time?

10.

Research magnetic, optical and solid state storage. Consider performance (capacity and speed) and cost (cost per byte) of these storage mediums. How do they compare today? What are predictions for the future?

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Explanation / Answer

A computer peripheral is a device that is connected to a computer but is not part of the core computer architecture. The core elements of a computer are the central processing unit, power supply, motherboard and the computer case that contains those three components. Technically speaking, everything else is considered a peripheral device. However, this is a somewhat narrow view, since various other elements are required for a computer to actually function, such as a hard drive and random-access memory (or RAM).

Types of Peripheral Devices

There are many different peripheral devices, but they fall into three general categories:

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