Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
Exhibit
NSG rule on ApiSubnet: Priority 200 Allow-WebToApi Source: ASG-Web Destination: ASG-Api Protocol: TCP Port: 8443 Priority 300 Deny-All-Other Source: Any Destination: Any Protocol: Any Port: * VM inventory: web01 NIC: Member of ASG-Web api01 NIC: Not a member of ASG-Api Symptom: TCP 8443 connections from web01 to api01 are denied.
Based on the exhibit, web servers can reach a backend VM only after it is added to a specific group. What should the administrator change to allow the traffic to match the existing NSG rule?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Add api01's NIC to ASG-Api.
The NSG rule is already written to permit traffic from ASG-Web to ASG-Api on TCP 8443. The backend NIC is not in the destination ASG, so the allow rule never matches. Adding api01 to ASG-Api makes the existing rule effective without broadening access to the entire subnet.
B
Distractor review
Move the deny rule to priority 100.
Moving the deny rule earlier would make the problem worse. The allow rule must match before the deny rule, and in this case the destination ASG membership is the missing piece.
C
Distractor review
Change the source of the allow rule from ASG-Web to VirtualNetwork.
Using VirtualNetwork would widen access beyond the intended app tier and would not preserve the current least-privilege design. The problem is not the source scope; it is the destination ASG membership.
D
Distractor review
Place api01 in the same subnet as web01.
Subnet placement is not required for ASG-based NSG filtering. The existing rule can work across subnets as long as both NICs are in the correct ASGs.
Common exam trap
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Technical deep dive
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
You need to create a storage account that provides the lowest-cost redundant storage for non-critical data and only needs protection against local disk or server failure within a single datacenter. Which redundancy option should you choose?
FAQ
Questions learners often ask
What does this AZ-104 question test?
Authentication checks who the user is.
What is the correct answer to this question?
The correct answer is: Add api01's NIC to ASG-Api. — The exhibit shows that the NSG already contains a correctly scoped rule from ASG-Web to ASG-Api on TCP 8443. The backend VM is not a member of ASG-Api, so the destination criteria do not match and the allow rule is bypassed. Adding api01's NIC to ASG-Api is the minimal change that makes the existing rule work as intended while preserving least privilege. Why others are wrong: Lowering the deny rule priority would not solve the fact that the allow rule still does not match the backend NIC. Expanding the source to VirtualNetwork would over-permit traffic and weaken the design. Putting both VMs in the same subnet is unnecessary because ASG-based rules can span subnets when the NICs are assigned properly.
What should I do if I get this AZ-104 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
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