The answer is Azure DNS. This is the correct choice because Azure DNS is a dedicated managed DNS hosting service that provides name resolution using the global Microsoft Azure DNS infrastructure, leveraging Anycast networking to ensure high availability and low-latency responses for domain names. On the Microsoft Azure Fundamentals AZ-900 exam, this question tests your understanding of core Azure networking services, often appearing alongside other services like Azure Traffic Manager or Azure Front Door—a common trap is confusing DNS hosting with load balancing or content delivery. A reliable memory tip is to think of Azure DNS as the phonebook for the internet: it translates domain names to IP addresses, and because it uses Anycast, your query always reaches the nearest available server for fast results. Remember the mnemonic “DNS for Domains” to keep it straight.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. 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.
Which Azure service provides managed DNS hosting for domain names, enabling reliable and fast DNS queries?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure DNS
Azure DNS is the correct answer because it is a dedicated managed DNS hosting service that provides name resolution using the global Microsoft Azure DNS infrastructure. It supports standard DNS record types (A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, TXT) and offers high availability and low-latency responses by leveraging Anycast networking. This makes it ideal for hosting domain names and ensuring reliable, fast DNS queries.
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.
✗
Azure Traffic Manager
Why it's wrong here
Traffic Manager uses DNS for load balancing routing decisions — Azure DNS is for hosting your actual DNS zones.
✓
Azure DNS
Why this is correct
Azure DNS hosts DNS zones and provides name resolution using Microsoft's global anycast network for high availability.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Front Door
Why it's wrong here
Front Door is an application delivery network — Azure DNS is the service that hosts DNS zones.
✗
Azure VPN Gateway
Why it's wrong here
VPNGateway provides network connectivity — not DNS hosting.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Traffic Manager (a DNS-based traffic routing service) with a DNS hosting service, but Traffic Manager does not host DNS zones or manage domain name records—it only uses DNS to direct traffic to endpoints.
Detailed technical explanation
How to think about this question
Under the hood, Azure DNS uses a global network of Anycast-enabled DNS servers to respond to queries from the nearest available node, reducing latency and improving resilience. It supports DNSSEC (Domain Name System Security Extensions) to protect against spoofing attacks, and integrates with Azure RBAC and Azure Policy for fine-grained access control. In a real-world scenario, an organization migrating its public DNS to Azure DNS can achieve sub-50ms query response times globally while maintaining full control over record management via Azure Portal, CLI, or REST API.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-900 question in full detail.
Describe Azure architecture and services — This question tests Describe Azure architecture and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure DNS — Azure DNS is the correct answer because it is a dedicated managed DNS hosting service that provides name resolution using the global Microsoft Azure DNS infrastructure. It supports standard DNS record types (A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, TXT) and offers high availability and low-latency responses by leveraging Anycast networking. This makes it ideal for hosting domain names and ensuring reliable, fast DNS queries.
What should I do if I get this AZ-900 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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Question Discussion
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