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Question 49 - NS0-304 discussion

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An administrator cannot create a new volume in Azure NetApp Files. The administrator receives an error that the DNS server is not available. What should the administrator do?

A.
Confirm the network security groups allow connectivity
Answers
A.
Confirm the network security groups allow connectivity
B.
Make sure that the Volume and DNS server are in the same subnet
Answers
B.
Make sure that the Volume and DNS server are in the same subnet
C.
Create a VNet service endpoint to the DNS server
Answers
C.
Create a VNet service endpoint to the DNS server
D.
Configure subnet delegation for the VNet
Answers
D.
Configure subnet delegation for the VNet
Suggested answer: A

Explanation:

When an administrator receives an error that the DNS server is not available while trying to create a new volume in Azure NetApp Files, the first action should be to confirm that the network security groups allow connectivity. Here's the process:

Check Network Security Group Rules: Verify that the network security group (NSG) associated with the subnet where Azure NetApp Files is located has rules that allow traffic to and from the DNS server, specifically permitting DNS query traffic (typically over port 53 for both TCP and UDP).

Adjust NSG Settings if Necessary: If the current NSG rules are restrictive and do not allow DNS traffic, modify them to include the necessary allowances for DNS resolution.

Test Connectivity: After updating the NSG settings, retry the volume creation to see if the DNS issue has been resolved.

For guidance on managing NSGs in Azure, consult the Azure documentation: Azure Network Security Groups.

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asked 23/09/2024
Luke Smith
30 questions
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