Comptia A+ Core 1 Exam: Guide To Computing Infrastructure (mindtap Course List)
Comptia A+ Core 1 Exam: Guide To Computing Infrastructure (mindtap Course List)
10th Edition
ISBN: 9780357108376
Author: Jean Andrews, Joy Dark, Jill West
Publisher: Cengage Learning
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Chapter 5, Problem 12TC

a.

Explanation of Solution

Given:

PATA hard drive

SATA hard drive

To find:Whether PATA hard drives are older and slower than SATA hard drives.

Solution:

Yes, SATA hard drives are successor to the PATA hard drives...

b.

Explanation of Solution

Given:

SATA 1

SATA 3

To find:Whether SATA 1 is 10 times faster than SATA 3.

Solution:

c.

Explanation of Solution

Given:RAID 0.

To find:Whether RAID 0 can be implemented by using only single hard drive.

Solution:

No...

d.

Explanation of Solution

Given:RAID 5.

To find:Whether RAID 5 requires five hard drives which work together at the same speed and capacity...

e.

Explanation of Solution

Given:

Internal SATA data cable

eSATA port

To find:Whether an internal SATA data cable can be used with an eSATA port...

f.

Explanation of Solution

Given:Internal SATA data cable

To find:Whether an internal SATA data cable has 7 pins.

Solution:

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What is the average time to read or write a 512 bytes sector for a disk? The advertised average seek time is 5 ms, the transfer rate is 40 MB/sec, it rotates at 10,000 RPM, and the controller overhead is 0.1 ms. Assume the disk is idle so that there is no queuing delay. In addition, calculate the time assuming the advertised seek time is three times longer than the measured seek time.
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