DP-900 Practice Question: Identify considerations for relational data on Azure
Exhibit
Refer to the exhibit.
```json
{
"properties": {
"databaseName": "SalesDB",
"requestedServiceObjectiveName": "S2",
"edition": "Standard",
"maxSizeBytes": 268435456000
}
}
```Refer to the exhibit. You are reviewing an ARM template for an Azure SQL Database deployment. What is the maximum size (in GB) of the database?
⚠ Common exam trap
The trap here is that candidates often mistakenly divide the byte value by 1,000,000,000 (decimal) instead of 1,073,741,824 (binary), leading them to incorrectly select 268 GB instead of the correct 250 GB.
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
✓
250 GB
The ARM template specifies the 'maxSizeBytes' property as 268,435,456,000 bytes. Converting this to gigabytes (divide by 1024^3) yields exactly 250 GB. This is the maximum size of the database as defined in the template.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
256 GB
Why it's wrong here
Selecting 256 GB would mean a capacity of 256 GiB, which is 256 × 1,073,741,824 = 274,877,906,944 bytes. The exhibit shows 268,435,456,000 bytes, which is 6,442,450,944 bytes less, so 256 GB is too large. Azure ARM templates define disk sizes in GiB, and 256 GiB is a distinct binary capacity from the 250 GiB value that matches the given byte count.
- ✗
500 GB
Why it's wrong here
500 GB in an ARM template translates to 500 GiB, or 500 × 1,073,741,824 = 536,870,912,000 bytes. That is exactly twice the exhibit's value of 268,435,456,000 bytes, so choosing 500 GB would double the requested storage. The correct conversion of 268,435,456,000 bytes is 250 GiB, not 500 GiB, because dividing by 1,073,741,824 yields 250.
- ✓
250 GB
Why this is correct
The value 268,435,456,000 bytes divides exactly by 1,073,741,824 (the number of bytes in one GiB) to give 250, meaning the exhibit represents 250 GiB. In an ARM template, the disk size property is specified as an integer number of GiB, so the correct entry is 250. This binary interpretation matches Azure's capacity behavior, where the displayed 'GB' actually refers to GiB for managed disks.
- ✗
268 GB
Why it's wrong here
The option 268 GB might be tempting because the byte count 268,435,456,000 begins with 268, but 268 GiB equals 268 × 1,073,741,824 = 287,762,808,832 bytes, which is over 19 GB more than the exhibit's value. Azure's ARM template size values are exact binary GiB counts, not rounded or truncated decimal approximations. Therefore, 268 GiB does not equal 268,435,456,000 bytes; the exact GiB equivalent is 250.
Go deeper
Related to this question
About these practice questions
Courseiva writes every DP-900 question from scratch — 820 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-900 exam.