- A
An internal load balancer
Why wrong: An internal load balancer would not expose a public IP to internet users.
- B
A public load balancer
This fits the requirement for a single public IP and traffic distribution.
- C
A private DNS zone
Why wrong: DNS alone does not provide health-based load balancing across the VMs in this way.
- D
A Recovery Services vault
Why wrong: A Recovery Services vault is for backup and recovery.
Question 956 of 1,170
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Two virtual machines named VM-Web01 and VM-Web02 host the same public web application. Users on the internet must connect through a single public IP address, and incoming requests should be distributed across both VMs. What should you deploy?
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
✓
A public load balancer
A public load balancer (Azure Load Balancer with a public frontend IP) is required because it provides a single public IP address for internet clients and distributes incoming traffic across the backend VMs (VM-Web01 and VM-Web02) using a configured load-balancing rule. This ensures high availability and scalability for the web application.
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.
- ✗
An internal load balancer
Why it's wrong here
An internal load balancer would not expose a public IP to internet users.
When this WOULD be correct
An internal load balancer would be correct if the question specified that the web application is accessed only by internal users within the same virtual network, and no internet-facing public IP is needed.
- ✓
A public load balancer
Why this is correct
This fits the requirement for a single public IP and traffic distribution.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A private DNS zone
Why it's wrong here
DNS alone does not provide health-based load balancing across the VMs in this way.
When this WOULD be correct
You need to resolve custom domain names (e.g., 'app.internal') to private IP addresses of VMs within a virtual network, without exposing them to the internet. For example, deploying a private DNS zone linked to a VNet for internal name resolution.
- ✗
A Recovery Services vault
Why it's wrong here
A Recovery Services vault is for backup and recovery.
When this WOULD be correct
You need to protect Azure VMs by enabling backup. The question would ask: 'Which Azure resource should you create to store backup data and configure backup policies for Azure VMs?'
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓A public load balancerCorrect answer▾
Why this is correct
This fits the requirement for a single public IP and traffic distribution.
✗An internal load balancerWrong answer — click to see why▾
Why this is wrong here
An internal load balancer only handles traffic within a virtual network, not from the internet. Since users must connect from the internet through a single public IP, a public load balancer is required.
★ When this WOULD be the correct answer
An internal load balancer would be correct if the question specified that the web application is accessed only by internal users within the same virtual network, and no internet-facing public IP is needed.
Why candidates choose this
Candidates may confuse internal and public load balancers, thinking any load balancer can handle internet traffic, or they may overlook the requirement for a public IP address.
✗A private DNS zoneWrong answer — click to see why▾
Why this is wrong here
A private DNS zone resolves names within a private network, not for internet-facing traffic. It cannot provide a single public IP address or distribute incoming internet requests across VMs.
★ When this WOULD be the correct answer
You need to resolve custom domain names (e.g., 'app.internal') to private IP addresses of VMs within a virtual network, without exposing them to the internet. For example, deploying a private DNS zone linked to a VNet for internal name resolution.
Why candidates choose this
Candidates may confuse DNS-based load balancing with actual load balancing, thinking that a DNS zone can distribute traffic by resolving to multiple IPs, but it lacks health probing and session persistence.
✗A Recovery Services vaultWrong answer — click to see why▾
Why this is wrong here
A Recovery Services vault is used for backup and disaster recovery, not for distributing incoming internet traffic across VMs.
★ When this WOULD be the correct answer
You need to protect Azure VMs by enabling backup. The question would ask: 'Which Azure resource should you create to store backup data and configure backup policies for Azure VMs?'
Why candidates choose this
Candidates may confuse Recovery Services vault with a service that provides high availability or failover, mistakenly thinking it can distribute traffic.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse an internal load balancer with a public load balancer, mistakenly thinking any load balancer can provide internet-facing access, but only a public load balancer exposes a public IP address for external clients.
Detailed technical explanation
How to think about this question
Azure Load Balancer operates at Layer 4 (TCP/UDP) and uses a hash-based distribution algorithm (5-tuple hash: source IP, source port, destination IP, destination port, protocol) to route traffic to healthy backend instances. Health probes (e.g., HTTP GET on a specific path) are used to monitor backend VM availability; if a VM fails the probe, traffic is redirected to the remaining healthy VMs. In a real-world scenario, you would also configure a backend pool, health probe, and load-balancing rule to define the frontend IP, port mapping, and distribution method.
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.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Virtual Networking — This question tests Implement and Manage Virtual Networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: A public load balancer — A public load balancer (Azure Load Balancer with a public frontend IP) is required because it provides a single public IP address for internet clients and distributes incoming traffic across the backend VMs (VM-Web01 and VM-Web02) using a configured load-balancing rule. This ensures high availability and scalability for the web application.
What should I do if I get this AZ-104 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
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