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Exam AZ-300 topic 1 question 32 discussion

Actual exam question from Microsoft's AZ-300
Question #: 32
Topic #: 1
[All AZ-300 Questions]

HOTSPOT -
You have a virtual network named VNet1 that has the configuration shown in the following exhibit.

Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.
NOTE: Each correct selection is worth one point.
Hot Area:

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Suggested Answer:
Box 1: add an address space -
Your IaaS virtual machines (VMs) and PaaS role instances in a virtual network automatically receive a private IP address from a range that you specify, based on the address space of the subnet they are connected to. We need to add the 192.168.1.0/24 address space.

Box 2: add a network interface -
The 10.2.1.0/24 network exists. We need to add a network interface.
References:
https://docs.microsoft.com/en-us/office365/enterprise/designing-networking-for-microsoft-azure-iaas https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-static-private-ip-arm-pportal
by Benkyoujin at Dec. 10, 2019, 10:15 p.m.

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Ekramy_Elnaggar
Highly Voted 5 years, 1 month ago
Correct answers are: - add an address space - add a subnet
upvoted 90 times
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onlyfunmails
Highly Voted 5 years, 1 month ago
VNET CIDR: 10.2.0.0/16 means, defaut subnet CIDR: 10.2.0.0/24. So, VM in default subnet won't get the requested IP. Need to create a subnet with CIDR: 10.2.1.0/24 and create VM in that subnet. So, answer Add Subnet.
upvoted 52 times
josemessias
4 years, 7 months ago
I Agree but when you create de first subnet (default) you can change de CIDR, the exihibit must be incomplete. The anwser can be Add Subnet or Add Network interface...
upvoted 2 times
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azurecert2021
Most Recent 4 years ago
correct answer is add an address space and add a subnet biiger image is avaialble at https://vceguide.com/hotspot-734/ so as per bigger screenshot VNET address space CIDR is 10.2.0.0/16 and defaut subnet CIDR is 10.2.0.0/24 , VM in default subnet won't get the requested IP ,Need to create a subnet with CIDR: 10.2.1.0/24 and create VM in that subnet.Without adding subnet NIC addition won't be possible so definitely answer will be add a subnet.
upvoted 1 times
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a_Ri
4 years, 4 months ago
10.2.1.0/24 is not present and no address in that subnet could be assigned yet. The 2nd answer should be “add a subnet”
upvoted 1 times
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prince_norman_maximus
4 years, 4 months ago
Add an address space Add a subnet - If you attach a NIC to a VM on VNET1, that VM can get any IP address on 10.2.0.0/16. It will not specifically get an IP address on 10.2.1.0/24 because that subnet has not been defined.
upvoted 1 times
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groy
4 years, 4 months ago
Add an address space Add a subnet
upvoted 1 times
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Rooh
4 years, 5 months ago
Correct answer is Add an address space and add a subnet.
upvoted 1 times
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Kamal_SriLanka
4 years, 5 months ago
Correct answer is Add an address space and add a subnet.
upvoted 1 times
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Shyamt
4 years, 5 months ago
Before a vm on vnet1 can receive an ip address from 10.2.1.0/24, you must first... Looks like in the question they assume the subnet 10.2.1.0/24 already exists and next is to add nic.
upvoted 1 times
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exams0123456
4 years, 6 months ago
If the Virtual Network is created for 10.2.0.0/16 it contains all address spaces starting from 10.2.0.0/16 until 10.2.0.0/32 Also, when someone says 10.2.0.0/16 they mean IP Address range from 10.2.0.0 until 10.2.255.255 (which includes 10.2.0.0/24 which is only a small subset ip range from 10.2.0.0 until 10.2.0.255 ) Hence there is no need to create a separate subnet, because Address space is already there, which is the "default" subnet as seen in the pic. The only thing required is a NIC (network interface card) to be created, when the VM is being created. Hence answers are : 1. Address Space 2. Network Interface.
upvoted 4 times
gnoamchomsky
4 years, 5 months ago
That would be incorrect. Yes, the default subnet is there and that subnet is 10.2.0.0/24. They are asking "Before a virtual machine on VNet1 can receive an IP address from 10.2.1.0/24" and that subnet does not exist. Hence in this scenario you must add subnet first unless there is a typo in the question.
upvoted 2 times
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gboyega
4 years, 6 months ago
Add an Address Space Add a Subnet
upvoted 6 times
ihustle
4 years, 2 months ago
@gboyega, it would make a lot of sense if you attached some explanations to your answers.
upvoted 1 times
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DeveshSolanki
4 years, 6 months ago
B1-Add an Address Space B2-Add a Subnet
upvoted 1 times
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mtb123
4 years, 6 months ago
The full exhibit can be found here https://www.examtopics.com/exams/microsoft/az-103/view/27/ and the answers are: Box 1: add Address Space, Box2: add subnet.
upvoted 4 times
hukhalid
4 years, 6 months ago
Address space is different in both questions. 103 Address space is 10.2.0.0/24, here the subnet is /16.
upvoted 1 times
exams0123456
4 years, 6 months ago
Hi, The subnet " /16" contains the address space "/24" Meaning: If the Virtual Network is created for 10.2.0.0/16 it contains all address spaces starting from 10.2.0.0/16 until 10.2.0.0/32 Also, when someone says 10.2.0.0/16 they mean IP Address range from 10.2.0.0 until 10.2.255.255 (which includes 10.2.0.0/24 which is only a small subset ip range from 10.2.0.0 until 10.2.0.255 ) Btw for the second choice, because Address space is already there and the "default" subnet already exists, as seen in the pic, only thing required is a NIC (network interface card) to be created, when the VM is being created. Hence answers are : 1. Address Space 2. Network Interface.
upvoted 2 times
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dumbu
4 years, 6 months ago
The answer is to add the subnet. The default subnet in the image is of 10.2.0.0/24 and the question asked is for 10.2.1.0/24 . If you try to create a NIC the it will search for available subnets and 10.2.1.*/24 is not present so VM cannot receive IP from 10.2.1.0.24
upvoted 1 times
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nabylion
4 years, 6 months ago
default subnet will be automatically there once new NIC got IP from address space.
upvoted 2 times
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Albelev
4 years, 6 months ago
The correct answer is to add network interface because the "default" subnet is already created.
upvoted 3 times
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SaravanakumarV
4 years, 6 months ago
Default subnet will be created when we create VNet. Also see the image, the subnet is already there, correct answers are Add an address space Add NIC to the VM
upvoted 3 times
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