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CompTIA Exam DS0-001 Topic 1 Question 7 Discussion

Actual exam question for CompTIA's DS0-001 exam
Question #: 7
Topic #: 1
[All DS0-001 Questions]

Which of the following computer services associates IP network addresses with text-based names in order to facilitate identification and connectivity?

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Suggested Answer: B

The constraint that is used to enforce referential integrity is foreign key. A foreign key is a column or a set of columns in a table that references the primary key of another table. A primary key is a column or a set of columns in a table that uniquely identifies each row in the table. Referential integrity is a rule that ensures that the values in the foreign key column match the values in the primary key column of the referenced table. Referential integrity helps maintain the consistency and accuracy of the data across related tables. The other options are either different types of constraints or not related to referential integrity at all. For example, a surrogate key is a column that is artificially generated to serve as a primary key, such as an auto-increment number or a GUID (Globally Unique Identifier); a unique key is a column or a set of columns in a table that uniquely identifies each row in the table, but it can have null values unlike a primary key; there is no such constraint as TID.Reference:CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.2 Given a scenario, execute database tasks using scripting and programming languages.


by Shawna at Oct 22, 2023, 04:03 PM

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Val
13 hours ago
DHCP seems like the obvious choice. It's all about dynamically assigning IP addresses to devices on a network.
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Paola
9 days ago
I'm pretty sure IDNS is the answer here. It's the only one that specifically mentions associating IP addresses with text-based names.
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Jesusita
20 days ago
I see your point, DHCP does associate IP network addresses with text-based names for connectivity.
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Micaela
25 days ago
I disagree, I believe the correct answer is C) DHCP.
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Jesusita
26 days ago
I think the answer is D) IDNS.
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