- A
An application security group lets you reference a set of virtual machines in NSG rules.
Correct because ASGs let you group VMs logically and then use the group name in NSG rules.
- B
A service tag is a Microsoft-managed label for a service or address range.
Correct because service tags represent Azure services or IP ranges that Microsoft maintains for easier rule management.
- C
Application security groups are used to assign Azure roles.
Why wrong: False because ASGs are a network security concept, not an identity or authorization feature.
- D
Service tags are custom labels you create for your own subscriptions.
Why wrong: False because service tags are Microsoft-defined, not custom tags created by the customer.
- E
Service tags create a private IP address for a service.
Why wrong: False because service tags simplify rule definitions, but they do not create private IP addresses.
Quick Answer
The correct answer is that a service tag is a Microsoft-managed label for a service or address range, while an application security group (ASG) allows you to group virtual machines logically and reference that group as a source or destination in NSG rules. This distinction is critical because ASGs decouple network security rules from individual IP addresses or NICs, enabling dynamic membership based on application tiers, whereas service tags simplify outbound traffic management by automatically updating IP ranges for Azure services like Azure SQL or Storage. On the AZ-104 exam, you will often see a scenario where you must choose between ASGs for internal VM segmentation and service tags for controlling traffic to PaaS services—a common trap is confusing ASGs with NSG flow logs or thinking service tags are user-defined. Remember: ASGs group your own VMs by function (e.g., “web tier”), while service tags handle Azure’s own endpoints. A quick mnemonic: “ASG for your app, tag for Azure’s map.”
AZ-104 Implement and Manage Virtual Networking Practice Question
This AZ-104 practice question tests your understanding of implement and manage virtual networking. 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 two statements about application security groups and service tags are correct? Select two.
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
An application security group lets you reference a set of virtual machines in NSG rules.
Option A is correct because an application security group (ASG) allows you to group virtual machines logically, and then reference that group as a source or destination in network security group (NSG) rules. This simplifies rule management by decoupling the rule from individual VM IP addresses or NICs, enabling dynamic membership based on application tiers.
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 application security group lets you reference a set of virtual machines in NSG rules.
Why this is correct
Correct because ASGs let you group VMs logically and then use the group name in NSG rules.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
A service tag is a Microsoft-managed label for a service or address range.
Why this is correct
Correct because service tags represent Azure services or IP ranges that Microsoft maintains for easier rule management.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Application security groups are used to assign Azure roles.
Why it's wrong here
False because ASGs are a network security concept, not an identity or authorization feature.
- ✗
Service tags are custom labels you create for your own subscriptions.
Why it's wrong here
False because service tags are Microsoft-defined, not custom tags created by the customer.
- ✗
Service tags create a private IP address for a service.
Why it's wrong here
False because service tags simplify rule definitions, but they do not create private IP addresses.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing application security groups (which handle network traffic filtering) with Azure RBAC roles (which handle access control), and assuming service tags are user-defined labels rather than Microsoft-managed, dynamic IP prefix groups.
Detailed technical explanation
How to think about this question
Service tags are defined by Azure and automatically updated as service IP ranges change, eliminating the need to manually track and update NSG rules. Under the hood, each service tag maps to a set of IP prefixes (e.g., 'AzureCloud' covers all Azure datacenter IPs), and NSG rules using service tags are evaluated against the current prefix list. Application security groups, on the other hand, rely on Azure's software-defined networking to tag VM NICs with the ASG ID, allowing NSG rules to match traffic based on that logical grouping rather than static IPs.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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: An application security group lets you reference a set of virtual machines in NSG rules. — Option A is correct because an application security group (ASG) allows you to group virtual machines logically, and then reference that group as a source or destination in network security group (NSG) rules. This simplifies rule management by decoupling the rule from individual VM IP addresses or NICs, enabling dynamic membership based on application tiers.
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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