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Exam AZ-300 topic 1 question 69 discussion

Actual exam question from Microsoft's AZ-300

Question #: 69
Topic #: 1

DRAG DROP -
You have an Azure subscription that contains two virtual networks named VNet1 and VNet2. Virtual machines connect to the virtual networks.
The virtual networks have the address spaces and the subnets configured as shown in the following table.

You need to add the address space of 10.33.0.0/16 to VNet1. The solution must ensure that the hosts on VNet1 and VNet2 can communicate.
Which three actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
Select and Place:

Show Suggested Answer

Suggested Answer: Explanation
Step 1: Remove peering between Vnet1 and VNet2.
You can't add address ranges to, or delete address ranges from a virtual network's address space once a virtual network is peered with another virtual network.
To add or remove address ranges, delete the peering, add or remove the address ranges, then re-create the peering.
Step 2: Add the 10.44.0.0/16 address space to VNet1.
Step 3: Recreate peering between VNet1 and VNet2
References:
https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-manage-peering

by Oz at Oct. 22, 2019, 3:24 a.m.

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Cern77

Highly Voted 5 years, 6 months ago

- Remove peering between VNet1 and VNet2 - Add the 10.33.0.0/16 address space to VNet1 - Recreate peering between VNet1 and VNet2 https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-manage-peering

upvoted 57 times

praveen97

4 years, 11 months ago

Agree with Cern77.

upvoted 2 times

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jivom

5 years, 1 month ago

This is the part that talks about the peering removal requirement: "You can't add address ranges to, or delete address ranges from a virtual network's address space once a virtual network is peered with another virtual network. To add or remove address ranges, delete the peering, add or remove the address ranges, then re-create the peering. "

upvoted 7 times

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analyser

5 years, 1 month ago

The question did not specify that there is a peering, so why remove peering?

upvoted 3 times

svcoco

5 years ago

The peering detail is in the last column of the table

upvoted 5 times

Yazn

3 years, 11 months ago

Where specifically?

upvoted 1 times

Yazn

3 years, 11 months ago

I just spotted that. It is a bit unclear :D

upvoted 1 times

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gboyega

Highly Voted 4 years, 11 months ago

- Remove peering between VNet1 and VNet2 - Add the 10.33.0.0/16 address space to VNet1 - Recreate peering between VNet1 and VNet2

upvoted 13 times

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tashakori

Most Recent 1 year, 3 months ago

1.- Remove peering between VNet1 and VNet2 2.- Add the 10.33.0.0/16 address space to VNet1 3.- Recreate peering between VNet1 and VNet2

upvoted 1 times

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usamnkkid

2 years, 3 months ago

The question is too old now you can add a address range in a peered vnet and then sync the address. Thats it. Try it on Lab. you will understand.

upvoted 1 times

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tundervirld

4 years, 11 months ago

I agree to gboyega. The documentation sat when you add a new block IP, it is necessary delete all peering connections before. https://docs.microsoft.com/en-us/azure/architecture/networking/prefixes/add-ip-space-peered-vnet#add-the-ip-address-range

upvoted 2 times

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odr_rob

5 years ago

https://www.examtopics.com/exams/microsoft/az-100/view/27/ Question 3.

upvoted 10 times

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Pigi_102

5 years, 1 month ago

You remove peering, you ad the new address space and you recreate the peering. It would work as vnet are based on SDN and NVGRE thus is the GRE that make it work routing between two addres space in same vnet http://aidanfinn.azurewebsites.net/?p=21263

upvoted 2 times

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SilentH

5 years, 4 months ago

I don't understand the question. How can we "add" 10.33.0.0/16 to VNet1 when VNet1 has an address space of 10.1.0.0/16? Isn't 10.33.0.0/16 entirely outside of the VNet1 address apce? It seems like 10.33.0.0/16 is a different VNet (e.g. VNet3). Can someone please explain?

upvoted 1 times

wigger

5 years, 4 months ago

From the VNet1 blade select "Address space" under Settings > type new address space in text box provided and click save (disk icon)...

upvoted 1 times

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Andy001

5 years, 4 months ago

Please do not mix Address spaces and Subnets )

upvoted 5 times

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SaurabhAzure

5 years, 2 months ago

10.33.0.0/16 is actually not in 10.1.0.0/16. 10.1.0.0/16 means all addresses between 10.1.0.0 to 10.1.255.255.

upvoted 4 times

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NKnab

5 years ago

u can have additional cidr blocks for the same vnet

upvoted 1 times

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AnshMan

5 years, 6 months ago

You can't add address ranges to, or delete address ranges from a virtual network's address space once a virtual network is peered with another virtual network. To add or remove address ranges, delete the peering, add or remove the address ranges, then re-create the peering. To add address ranges to, or remove address ranges from virtual networks, see Manage virtual networks. https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-manage-peering

upvoted 1 times

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Oz

5 years, 8 months ago

IMHO Box 2 "Protecting from web vulnerabilities" should be Application gateway. it's component Web Application firewall will fit the bill. Security Center is a monitoring and alerting solution not an actual protection from web vulnerabilities. Ref: https://docs.microsoft.com/en-us/azure/application-gateway/overview

upvoted 1 times

tartar

4 years, 9 months ago

Thanks to all, my notes - Remove peering between VNet1 and VNet2 - Add the 10.33.0.0/16 address space to VNet1 - Recreate peering between VNet1 and VNet2

upvoted 7 times

Madhu1

4 years, 9 months ago

Options: https://www.examtopics.com/assets/media/exam-media/02518/0026600001.png

upvoted 3 times

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