question

navinprasadk avatar image
1 Vote"
navinprasadk asked LiXiaolong-2911 answered

What is meant by Network Interface Card (NIC)?

While creating VM in azure, NIC also created. Initially, I thought that both the virtual network and NIC are the same. Then I got to know that both are different. So, anyone of you kindly helps me to clarify this

azure-virtual-machines
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msrini-MSFT avatar image
4 Votes"
msrini-MSFT answered mvark commented

Hi,

In Azure when you deploy a VM the following components gets deployed along :

NIC
Network Security Group
Public IP
Disk

A NIC is a component which holds the Public IP and the private IP of the VM. Also you can associate the NSG to the NIC.

NIC can be deployed in a subnet of the Virtual Network.

Hope this helps!

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If i may nit-pick, aren't Virtual Network, Disk & NIC the minimal resources that are created as part of VM creation? Public IP and NSG are optional

2 Votes 2 ·
AskoKauppinen-1243 avatar image
2 Votes"
AskoKauppinen-1243 answered

VM needs at least one NIC, NIC connects VM to the VNet. One VM can have multiple NIC's as well.

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ameynaik avatar image
0 Votes"
ameynaik answered

A network interface enables an Azure Virtual Machine to communicate with internet, Azure, and on-premises resources. When creating a virtual machine using the Azure portal, the portal creates one network interface with default settings for you.

Please find the below link for more information regarding same

https://docs.microsoft.com/en-us/azure/virtual-network/virtual-network-network-interface.

@NavinPrasadK hope this helps, please accept the answer if information finds useful.

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ChaitanyaSreeramsetty-3905 avatar image
0 Votes"
ChaitanyaSreeramsetty-3905 answered

Network Interface Card (NIC) is assigned with IP address and associated with NSG rules, which is used for the communication between virtual machine's or internal network or internet.

Where as the virtual network (vNet) works on layer 3 and layer 4 for communication of traffic in secure way.

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LiXiaolong-2911 avatar image
0 Votes"
LiXiaolong-2911 answered

If you use Terraform for Azure, you will find NSG rules with NICs,
because NIC is part of NSG rules.

Read here:
https://docs.microsoft.com/en-us/azure/virtual-network/application-security-groups

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