AZ-305 Design data storage solutions Practice Question
This AZ-305 practice question tests your understanding of design data storage solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Exhibit
Refer to the exhibit. The following is an Azure CLI command output:
{
"id": "/subscriptions/.../resourceGroups/rg1/providers/Microsoft.Storage/storageAccounts/st1",
"kind": "StorageV2",
"properties": {
"accessTier": "Hot",
"supportsHttpsTrafficOnly": true,
"encryption": {
"keySource": "Microsoft.Storage",
"services": {
"blob": {
"enabled": true,
"keyType": "Account"
},
"file": {
"enabled": true,
"keyType": "Account"
}
}
},
"networkAcls": {
"bypass": "AzureServices",
"defaultAction": "Deny",
"ipRules": [],
"virtualNetworkRules": []
}
}
}
Refer to the exhibit. You need to enable public access to the storage account for a specific IP address while keeping the default action as Deny. What should you do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add an IP rule with the specific IP address to the ipRules array.
Option C is correct because the Azure Storage account firewall allows you to create IP rules that grant access to specific public IP addresses or ranges while keeping the default action as Deny. By adding an IP rule with the specific IP address to the `ipRules` array, you explicitly allow that IP through the firewall, and all other traffic is denied by the default rule. This is the standard method to enable selective public access without changing the default deny behavior.
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.
✗
Set the bypass to None to allow all traffic.
Why it's wrong here
Bypass controls Azure services, not public IP access.
✗
Set the networkAcls to an empty list to remove restrictions.
Why it's wrong here
This does not allow specific IP; it would remove all restrictions.
✓
Add an IP rule with the specific IP address to the ipRules array.
Why this is correct
Adding an IP rule allows that IP while defaultAction remains Deny.
Related concept
Read the scenario before looking for a memorised answer.
✗
Change the defaultAction to Allow and remove the Deny rule.
Why it's wrong here
This would allow all traffic, not just a specific IP.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think they must change the default action to Allow and then add a Deny rule, but Azure Storage firewall does not support explicit Deny rules for IP addresses—only Allow rules—so the correct approach is to keep the default as Deny and add an Allow rule for the specific IP.
Detailed technical explanation
How to think about this question
Under the hood, Azure Storage firewall uses a network rule set where the `defaultAction` (Allow or Deny) applies to all traffic that does not match any explicit rule. IP rules are evaluated first; if a match is found, the traffic is allowed regardless of the default action. This is similar to a whitelist approach where you explicitly permit specific IPs while denying everything else, and it is implemented via the `ipRules` array in the storage account's network ACLs. In real-world scenarios, this is commonly used to restrict access to a storage account from a corporate VPN or a specific office IP while keeping the account secure from the internet.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
Design data storage solutions — This question tests Design data storage solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Add an IP rule with the specific IP address to the ipRules array. — Option C is correct because the Azure Storage account firewall allows you to create IP rules that grant access to specific public IP addresses or ranges while keeping the default action as Deny. By adding an IP rule with the specific IP address to the `ipRules` array, you explicitly allow that IP through the firewall, and all other traffic is denied by the default rule. This is the standard method to enable selective public access without changing the default deny behavior.
What should I do if I get this AZ-305 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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