VM and NICs

1. You can attach multiple NICs to one VM. But one NIC can only be attached to one VM.
2. The VM needs to be Stopped before a new NIC is attached.
3. A VM must have at least one NIC attached called the Primary at all time.
4. Read

Recovery Services Vault

1. RSV can backup VM, Disks and Azure SQL DB. You only need to create backup rules for VM and Disks. The backup for Azure SQL DB is fully managed (but customer configured).
2. RSV can back up VM in the same region, regardless of OS and resource groups.

Redirect inbound traffic to instances

1. You can redirect traffic (ie. HTTP, RDP, SSH) to specific VMs using in inbound NAT rules.
2. Inbound security rules have parameters 'Source' and 'Destination'.

Azure Disk Encryption types

1. ADE encrypted VM can be backed up to the RSV.
2. Uses BitLocker for Windows VM.
3. Uses DM-Crypt for Linux VM.
4. ADE is fully managed and is integrated to KV.

Max number of Fault and Update Domains

1. One availability set can have up to 3 FD and 20 UD.

Virtual network links (private DNS)

• There are two types of virtual network links:

• Registration virtual networks

  • One private DNS zone can have many VNets autoregistered to it, but one VNet can only be registered to one zone.

• Resolution virtual networks

  • One private DNS zone can have many VNets, and one VNet can be linked to many private DNS zones.
  • VMs have to be manually registered to the private DNS zone.

Load balancer SKU

1. Basic - balances traffic across VMs in a single availability set or VMSS.
2. Standard - balances traffic across VMs in any VM or VMSS in a single VNet.

Resources

1. Amazing hands-on labs on the AZ-104 Microsoft Learning. Along with the Github resources. (Requires an Azure account).