CompTIA DA0-001 Exam - Topic 5 Question 60 Discussion

Actual exam question for CompTIA's DA0-001 exam

Question #: 60
Topic #: 5

[All DA0-001 Questions]

Which of the following is the most likely reason for a data analyst to optimize a query using parameterization?

ATo return a subset of records

BTo insert a temporary table

CTo prevent SQL injections

DTo increase the query speed

Show Suggested Answer

Suggested Answer: C

Parameterization in SQL queries is a technique used to prevent SQL injection, which is a common security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. By using parameterized queries, the database can distinguish between code and data, regardless of the input received. This method ensures that an attacker cannot change the intent of a query, even if SQL commands are inserted by the attacker. While parameterization can also affect performance by enabling consistent query execution plans, its primary purpose is to enhance security.

Medium article on SQL Query Optimization1.

MSSQLTips on SQL Query Performance2.

Blog post on SQL Performance Optimization3.

SQL Easy guide on improving SQL Query Performance4.

LearnSQL.com on SQL for Data Analysis5.

by Avery at Jul 14, 2025, 02:34 PM

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Argelia

2 months ago

B seems off, temporary tables aren't related to parameterization.

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Aaron

2 months ago

A is also a valid point, but C is the main reason.

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Chi

3 months ago

Wait, can parameterization really help with speed?

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Maxima

3 months ago

I think D makes more sense, faster queries are the goal.

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Mary

3 months ago

Definitely C, preventing SQL injections is key!

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Ozell

3 months ago

I vaguely recall that parameterization helps with security, but I also think it might improve performance. It's tricky!

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Ruth

4 months ago

I feel like returning a subset of records could be related, but it seems more like a function of the query itself rather than parameterization.

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Evan

4 months ago

I remember practicing a question where optimizing queries was linked to increasing speed, so maybe that's the right choice here?

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Owen

4 months ago

I think parameterization is mainly about preventing SQL injections, but I'm not entirely sure if that's the only reason.

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Tegan

4 months ago

I feel pretty confident the answer is D - to increase query speed. Parameterization allows the database to reuse execution plans, which can significantly improve performance. The other options don't seem as relevant for a data analyst's needs.

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Cassi

4 months ago

Okay, let me see. Parameterization can help return a subset of records, but that doesn't seem like the most likely reason. Inserting a temporary table also doesn't seem right. I'm leaning towards C - preventing SQL injections, since that's a key benefit of parameterization.

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Catalina

4 months ago

Hmm, I'm not totally sure about this one. I know parameterization is important for performance, but I'm not certain if that's the main reason a data analyst would use it. I'll have to think this through a bit more.

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Rex

5 months ago

This one seems pretty straightforward. I think the answer is C - to prevent SQL injections. Parameterizing queries is a common way to avoid security vulnerabilities.

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