Exam 220-1101 topic 1 question 363 discussion

Actual exam question from CompTIA's 220-1101

Question #: 363
Topic #: 1

A technician is creating a new RAID array for a customer. After interviewing the customer, the technician decides to implement a RAID array of striping without parity. Which of the following reasons would lead the technician to choose striping without parity instead of striping with parity?

A. Uptime is the customer's biggest concern.
B. Speed is the most important consideration.
C. Redundancy and speed are equally important.
D. Available storage space needs to be maximized.

Show Suggested Answer

Suggested Answer: B 🗳️

by edwinv at Jan. 25, 2024, 5:09 a.m.

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edwinv

Highly Voted 1 year, 5 months ago

Selected Answer: B

The reason that would lead the technician to choose striping without parity instead of striping with parity is: B. Speed is the most important consideration. Explanation: Striping without parity (RAID 0) provides improved speed and performance as data is divided across multiple drives. It enhances read and write operations by allowing multiple disks to work in parallel. Striping with parity (RAID 5), on the other hand, offers both speed and redundancy through parity information. However, the parity calculation can introduce additional overhead, impacting write performance to some extent. In the scenario where speed is the most critical consideration, and the customer prioritizes performance over redundancy, choosing striping without parity (RAID 0) is appropriate. This is particularly relevant when optimizing for data access speed and the highest possible throughput. Therefore, option B is the correct choice in this context.

upvoted 6 times

[Removed]

9 months, 1 week ago

Stripping without parity maximizes space. Feel free to explain that away.

upvoted 1 times

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zron

Most Recent 3 weeks ago

Selected Answer: B

If speed wasn't the goal, the user could have safer maximum storage capacity with no RAID array.

upvoted 1 times

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JonHin

4 months ago

Selected Answer: B

Speed is the most important consideration. Striping without parity, also known as RAID 0, is a RAID configuration that splits data across multiple disks without any redundancy. This improves the performance of read and write operations, as multiple disks can work in parallel. However, this also increases the risk of data loss, as any disk failure will result in losing all data on the array. Therefore, striping without parity is suitable for situations where speed is prioritized over reliability. According to the CompTIA Core1 objectives, one of the advantages of RAID 0 is increased speed. A research paper on RAID performance also confirms that RAID 0 has the highest throughput among all RAID levels.

upvoted 1 times

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dickchappy

9 months, 2 weeks ago

Selected Answer: B

Striping = Speed Parity = Redundancy

upvoted 2 times

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17c0e08

1 year, 3 months ago

Selected Answer: B

B is correct. Like edwinv said, stripping without parity improves speed as data is divided across more than one drive. It is not "copied" identically to each drive, this is different parts of the data separated into each drive. The data in the drives is not identical. You would not choose stripping without parity if you cared about redundancy so C cannot be right.

upvoted 2 times

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kry00

1 year, 4 months ago

Selected Answer: C

How do you decide between speed and storage space with the info provided.

upvoted 3 times

[Removed]

9 months, 1 week ago

You can't. Not only that, but the people answering B also have no clue, since only write is really a problem, read speed actually isn't a concern at all. Another great question from CompTIA that is so vague, you can't even answer it for sure.

upvoted 2 times

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