Question 285 of 963

Monitor, configure, and optimize database resources →hardMultiple ChoiceObjective-mapped

DP-300 Practice Question: Monitor, configure, and optimize database resources

This DP-300 practice question tests your understanding of monitor, configure, and optimize database resources. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.

Your Azure SQL Database is configured with Active Geo-Replication to a secondary region for disaster recovery. During a routine failover drill, you notice that after failover, the application cannot connect to the new primary because the login credentials fail. The logins are contained in the master database. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.

A
The DNS name of the secondary server changed after failover.
Why wrong: Failover groups handle DNS updates automatically.
B
The SQL logins in the master database are not replicated to the secondary server.
Active Geo-Replication replicates only user databases, not master database logins.
C
The firewall rules on the secondary server do not allow connections from the application IP.
Why wrong: Firewall rules can be configured in advance; the issue is about login authentication.
D
The application uses contained database users, which are not replicated.
Why wrong: Contained users are stored in the user database and are replicated.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

The SQL logins in the master database are not replicated to the secondary server.

When Active Geo-Replication is configured for Azure SQL Database, the secondary server is a separate logical server in a different region. The master database, which contains server-level logins, is not replicated as part of geo-replication; only the user databases are replicated. Therefore, after a failover, the new primary server does not have the server-level logins from the original primary, causing authentication failures for applications using those logins.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
The DNS name of the secondary server changed after failover.
Why it's wrong here
Failover groups handle DNS updates automatically.
✓
The SQL logins in the master database are not replicated to the secondary server.
Why this is correct
Active Geo-Replication replicates only user databases, not master database logins.
Clue confirmation
The clue words "most likely", "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The firewall rules on the secondary server do not allow connections from the application IP.
Why it's wrong here
Firewall rules can be configured in advance; the issue is about login authentication.
✗
The application uses contained database users, which are not replicated.
Why it's wrong here
Contained users are stored in the user database and are replicated.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often assume all server-level configurations, including logins, are automatically replicated with geo-replication, but in reality, only user databases are replicated, not the master database.

Detailed technical explanation

How to think about this question

Under the hood, Azure SQL Database geo-replication uses asynchronous replication at the database level, leveraging SQL Server's Always On availability group technology. Server-level objects like logins in the master database are not part of this replication stream; they must be manually created on the secondary server or automated via scripts. In a real-world scenario, this is a common oversight during DR drills, and the solution is to either use contained database users (which are replicated) or synchronize server-level logins using tools like Azure Automation or PowerShell.

KKey Concepts to Remember

Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.

TExam Day Tips

Watch for words such as best, first, most likely and least administrative effort.
Review why wrong options are wrong, not only why the correct option is correct.

Key takeaway

Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

Real-world example

How this comes up in practice

A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.

What to study next

Got this wrong? Here's your next step.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this DP-300 question test?

Monitor, configure, and optimize database resources — This question tests Monitor, configure, and optimize database resources — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The SQL logins in the master database are not replicated to the secondary server. — When Active Geo-Replication is configured for Azure SQL Database, the secondary server is a separate logical server in a different region. The master database, which contains server-level logins, is not replicated as part of geo-replication; only the user databases are replicated. Therefore, after a failover, the new primary server does not have the server-level logins from the original primary, causing authentication failures for applications using those logins.

What should I do if I get this DP-300 question wrong?

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "most likely", "primary". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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