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You need to allow RDP access from the internet to a Windows VM named VM-Admin01 in Azure. The VM already has a public IP address. Which additional configuration is required?

Question 1mediummultiple choice
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You need to allow RDP access from the internet to a Windows VM named VM-Admin01 in Azure. The VM already has a public IP address. Which additional configuration is required?

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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

Distractor review

A private DNS zone

Private DNS zones affect name resolution, not inbound RDP access from the internet.

B

Best answer

An NSG rule allowing inbound TCP 3389

RDP requires an inbound allow rule for TCP 3389.

C

Distractor review

A user-defined route to Azure Monitor

Routing to Azure Monitor does not affect RDP access.

D

Distractor review

A blob lifecycle management rule

Blob lifecycle rules are unrelated to virtual machine connectivity.

Common exam trap

Common exam trap: usable hosts are not the same as total addresses

Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.

Technical deep dive

How to think about this question

Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.

KKey Concepts to Remember

  • CIDR notation defines the prefix length.
  • Block size helps identify subnet boundaries.
  • Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
  • The required host count determines the smallest suitable subnet.

TExam Day Tips

  • Write the block size before choosing the subnet.
  • Check whether the question asks for hosts, subnets or a specific address range.
  • Do not confuse /24, /25, /26 and /27 host counts.

Related practice questions

Related AZ-104 practice-question pages

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AZ-104 virtual machine practice questions

Practise AZ-104 questions linked to AZ-104 virtual machine.

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

A route table contains these entries: 10.0.0.0/8 with next hop Virtual appliance, and 10.1.1.0/24 with next hop Virtual network gateway. Which next hop will Azure use for traffic to 10.1.1.5?

Question 2

You are deploying a stateless web application on Azure virtual machines. The solution must automatically add and remove instances based on CPU demand and allow all instances to be managed as one logical group. Which Azure compute feature should you deploy?

Question 3

You are deploying a Windows Server VM for an internal app. The VM must support Secure Boot and vTPM later, its OS disk must survive host moves, and the team wants the lowest-cost managed disk tier that still behaves like a normal writable OS disk. Which two choices should you make? Select two.

Question 4

You need to deploy several identical virtual machines and ensure that the failure of a single Azure host does not affect all of them. Which feature should you use?

Question 5

You need to connect VNet-Hub and VNet-Spoke so that resources in both virtual networks can communicate privately over the Microsoft backbone. Both virtual networks are in the same region. What should you configure?

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?

CIDR notation defines the prefix length.

What is the correct answer to this question?

The correct answer is: An NSG rule allowing inbound TCP 3389 — Inbound RDP requires an NSG rule that allows TCP port 3389 to the virtual machine or subnet. A route table or private DNS zone does not open the port.

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.

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