DP-300 Multiple Select — 10 Questions

Question 1

You are designing high availability for a critical Azure SQL Database. The database is 1 TB in size and requires an RPO of 0 (zero data loss) and an RTO of less than 30 seconds. Which TWO configurations can meet these requirements?

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Business Critical service tier with zone redundancy enabled.. Options A and C are correct. For zero data loss (RPO=0), synchronous replication is required. Business Critical (option A) with zone redundancy provides synchronous replicas within the same region and automatic failover, meeting both RPO=0 and RTO<30 seconds. Hyperscale (option C) also offers zone redundancy with synchronous log replication, enabling rapid failover without data loss. Option B (auto-failover group with same-region secondary) uses asynchronous replication, so data loss can occur. Option D (General Purpose) uses asynchronous replication as well and cannot guarantee zero data loss. Option E (active geo-replication) is also asynchronous, so it does not meet the RPO requirement.

Answer

Auto-failover group with a secondary in the same region.

Answer

General Purpose service tier with zone redundancy enabled.

Answer

Active geo-replication to a secondary in a different region.

Question 2

Which TWO of the following are valid reasons to use zone-redundant configuration for Azure SQL Database? (Choose Two.)

Accepted Answer

Protection against a single availability zone failure within a region.. Zone-redundant configuration for Azure SQL Database replicates databases across multiple availability zones within the same region, providing protection against a single zone failure (option C) and offering higher availability than a single-zone deployment (option E). Option A is incorrect because zone redundancy does not reduce read latency; that is achieved by geo-replication or read scale-out. Option B is incorrect because automatic failover to a paired region is a feature of geo-redundant disaster recovery, not zone redundancy. Option D is incorrect because zone redundancy does not protect against a full regional disaster; it only protects within a region.

Answer

Reduce read latency for globally distributed users.

Answer

Automatic failover to a paired region.

Answer

Protection against a regional disaster.

Question 3

You are monitoring an Azure SQL Database that is experiencing high DTU usage. Which TWO metrics should you examine to determine whether the bottleneck is CPU or I/O?

Accepted Answer

Log write bytes per second.. Average CPU percentage directly measures CPU utilization, indicating a CPU bottleneck when high. Log write bytes per second measures the throughput of transaction log writes, which is a key indicator of I/O activity and can reveal an I/O bottleneck. Therefore, both A and B are correct metrics to diagnose whether the high DTU usage is caused by CPU or I/O.

Answer

Number of deadlocks per second.

Answer

Used storage space in GB.

Answer

Number of active sessions.

Question 4

You are configuring security for an Azure SQL Managed Instance. The instance will host a critical application that requires always encrypted with secure enclaves. Which TWO actions must you take to support this feature? (Choose two.)

Accepted Answer

Select the Intel Software Guard Extensions (Intel SGX) enclave type.. Always Encrypted with secure enclaves on Azure SQL Managed Instance requires the Intel Software Guard Extensions (Intel SGX) enclave type. Intel SGX is the only supported enclave technology for this feature on managed instances, providing a trusted execution environment that protects sensitive data in memory during cryptographic operations.

Answer

Configure the column master key to be stored in Azure Key Vault.

Answer

Enable the enclave attestation policy on the managed instance.

Answer

Enable Virtualization-Based Security (VBS) enclave type.

Question 5

Which TWO actions are required to enable Microsoft Entra ID authentication for an Azure SQL Database?

Accepted Answer

Set an Microsoft Entra ID admin for the Azure SQL Server.. To enable Entra ID authentication, you must set an Entra ID admin for the SQL server and create contained database users mapped to Entra ID identities. Enabling Azure AD (Entra ID) integration is automatic. Assigning Azure RBAC roles is for management plane, not database authentication. The SQL Server authentication mode is always enabled.

Answer

Enable SQL Server authentication only.

Answer

Assign the SQL Server Contributor role to the Entra ID users.

Answer

Enable Azure AD integration on the SQL server.

Question 6

Which TWO of the following are valid disaster recovery options for Azure SQL Database that provide a secondary in a different Azure region?

Accepted Answer

Active geo-replication. Options A and B are correct. Active geo-replication and Failover groups are both valid disaster recovery options for Azure SQL Database that provide a secondary database in a different Azure region. Options C, D, and E are incorrect: Geo-restore (C) restores from backups and does not maintain a continuous secondary; Zone-redundant configuration (D) provides high availability within a single region, not disaster recovery; Auto-failover groups (E) is a feature that enables automatic failover for failover groups, but it is not a separate disaster recovery option—it is part of failover groups.

Answer

Geo-restore

Answer

Zone-redundant configuration

Answer

Auto-failover groups

Question 7

Which THREE factors should you consider when choosing between Azure SQL Database single database and Azure SQL Managed Instance for a new application?

Accepted Answer

Need for cross-database queries and transactions.. Azure SQL Database single database does not support cross-database queries and transactions, whereas Azure SQL Managed Instance provides full SQL Server instance-level features, including cross-database queries and transactions via linked servers or within the same instance. This makes Managed Instance the appropriate choice when the application requires querying or updating multiple databases in a single transaction.

Answer

Requirement for elastic pool scalability.

Answer

Need for automated backups with point-in-time restore.

Question 8

You are configuring performance optimization for an Azure SQL Database that uses the Hyperscale service tier. The database has heavy read-write workloads. Which THREE actions should you take to optimize performance?

Accepted Answer

Create nonclustered columnstore indexes on large fact tables.. Options A, C, and D are correct. Hyperscale benefits from nonclustered indexes on read-intensive tables, accelerated database recovery reduces log IO, and read-scale replicas distribute read load. Option B is wrong because Hyperscale does not support resource governor. Option E is wrong because increasing service tier is not an optimization action.

Answer

Configure resource governor to limit CPU usage.

Answer

Increase the service tier to Business Critical.

Question 9

Which THREE components are required to set up elastic jobs in Azure SQL Database?

Accepted Answer

Target groups. Target groups (C) are required because they define the set of databases (or elastic pools) against which an elastic job will execute. Without target groups, the job agent has no scope of execution. The elastic job agent (D) orchestrates job scheduling and execution, and job credentials (E) are needed to authenticate to the target databases for running T-SQL scripts.

Answer

Azure Automation account

Answer

SQL Server Agent

Question 10

You are monitoring an Azure SQL Database using Query Performance Insight and notice that a specific query has a high average duration and high CPU usage. The query plan shows a clustered index scan on a large table. Which two actions should you take to optimize performance? (Choose two.)

Accepted Answer

Update statistics on the table to ensure the optimizer has current information.. Updating statistics provides the query optimizer with current data distribution information, which can lead to a more efficient query plan, potentially avoiding the clustered index scan. In Azure SQL Database, stale statistics are a common cause of suboptimal plans, and updating them is a low-cost, non-disruptive first step before considering index changes.

Answer

Rebuild the clustered index to reduce fragmentation.

Answer

Force a different query plan using Query Store hints.

Answer

Increase the DTU service tier of the database.