Exam AZ-303 topic 5 question 7 discussion

Answer should be yes, no, no. To be able to ping machines, the peering should be 2 way and not 1 way, so between vm1 and vm2 the peering is 2 way, but between vm2 and vm3 the peering is one way only.

Just tested it answer is correct! Yes, Yes, No.

Given answer is correct Y Y N

It is YNN. As stated in QA here https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq If your peering connection is in an Initiated state, this means you have created only one link. A bidirectional link must be created in order to establish a successful connection. For example, to peer VNet A to VNet B, a link must be created from VNetA to VNetB and from VNetB to VNetA. Creating both links will change the state to Connected.

It must be Y-N-N. The VNET2 is connected only one-way to VNET3, hence it will not be 'Connected', but just 'Initiated'. To highlight this 2 way connection, VNET1 and VNET3 connections are shown in the table. https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#my-vnet-peering-connection-is-in-initiated-state-why-cant-i-connect

there is No one-way peering as such. It is connected or not. Question is bit ambiguous. as long as it is connected then it is bidirectional. So assuming VM2 and VM3 are connected then answer is YYN.

Yes, no, no - tested in lab. @ rekamoments is correct

YES NO NO Tested in Lab https://docs.microsoft.com/en-us/azure/virtual-network/tutorial-connect-virtual-networks-powershell Follow the steps in the link "...In the output returned after the previous command executes, you see that the PeeringState is Initiated." ... Resources in one virtual network CANNOT communicate with resources in the other virtual network until the PeeringState for the peerings in both virtual networks is Connected.

The given answer is correct and don't confuse others.

vNET peering is not transitive. https://docs.microsoft.com/en-us/azure/virtual-network/virtual-networks-faq#if-i-peer-vneta-to-vnetb-and-i-peer-vnetb-to-vnetc-does-that-mean-vneta-and-vnetc-are-peered

I am horrified to know someone claimed they did the test but with the wrong answer. REALLY? COME ON! YES NO NO. SEE https://azure.microsoft.com/en-au/updates/cross-aad-vnet-peering/ In the output returned after the previous command executes, you see that the PeeringState is Initiated. The peering remains in the Initiated state until you create the peering from myVirtualNetwork2 to myVirtualNetwork1. Create a peering from myVirtualNetwork2 to myVirtualNetwork1. In the output returned after the previous command executes, you see that the PeeringState is Connected. Azure also changed the peering state of the myVirtualNetwork1-myVirtualNetwork2 peering to Connected. Confirm that the peering state for the myVirtualNetwork1-myVirtualNetwork2 peering changed to Connected with Get-AzVirtualNetworkPeering.

I think it should be YYN. ICMP is enabled. Unlike the Internet Protocol (IP), ICMP is not associated with a transport layer protocol such as TCP or UDP. This makes ICMP a connectionless protocol: one device does not need to open a connection with another device before sending an ICMP message.

YYN. Second option can be No only in case of Vnet-Vnet peering. Now a days Vnet peering is used instead of Vnet-Vnet peering, hence we will go for Yes in 2nd option as well. So answer is YYN.

> VM1 -> VM3 > VM2 -> VM3 > VM3 -> VM1 VM1 and VM3 has two way peering. VM2 and VM3 has one way peering. Y/N/N. Of course, you have to use Powershell or CLI to establish 1 way peering - not possible via Azure Portal.

Yes Yes No is correct You just need to set up peering in either VNet and the connection will be established; no need to duplicate the effort for the other VNet https://docs.microsoft.com/en-us/azure/virtual-network/tutorial-connect-virtual-networks-portal

YYN https://docs.microsoft.com/en-us/azure/virtual-network/tutorial-connect-virtual-networks-portal

Its YNN and here is why, but probably old question It "specifically" lists 1& 3 in both directions. If all peers were "assumed" to be bi directional there would be no need to list 1-3 and then 3-1, thus bi directional is not assumed here, what you see is what you get.