Explanation

A Site-to-Site VPN gateway connection is used to connect your on-premises network to an Azure virtual network over an IPsec/IKE (IKEv1 or IKEv2) VPN tunnel. This type of connection requires a VPN device located on-premises that has an externally facing public IP address assigned to it. For more information about VPN gateways, see About VPN gateway.

1. Create a virtual network
You can create a VNet with the Resource Manager deployment model and the Azure portal
2. Create the gateway subnet :
The virtual network gateway uses specific subnet called the gateway subnet. The gateway subnet is part of the virtual network IP address range that you specify when configuring your virtual network. It contains the IP addresses that the virtual network gateway resources and services use.
3. Create the VPN gateway :
You create the virtual network gateway for your VNet. Creating a gateway can often take 45 minutes or more, depending on the selected gateway SKU.
4. Create the local network gateway:
The local network gateway typically refers to your on-premises location. You give the site a name by which Azure can refer to it, then specify the IP address of the on-premises VPN device to which you will create a connection. You also specify the IP address prefixes that will be routed through the VPN gateway to the VPN device. The address prefixes you specify are the prefixes located on your on-premises network. If your on-premises network changes or you need to change the public IP address for the VPN device, you can easily update the values later.
5. Configure your VPN device:
Site-to-Site connections to an on-premises network require a VPN device. In this step, you configure your VPN device. When configuring your VPN device, you need the following:
A shared key. This is the same shared key that you specify when creating your Site-to-Site VPN connection. In our examples, we use a basic shared key. We recommend that you generate a more complex key to use.
The Public IP address of your virtual network gateway. You can view the public IP address by using the Azure portal, PowerShell, or CLI. To find the Public IP address of your VPN gateway using the Azure portal, navigate to Virtual network gateways, then click the name of your gateway.
6. Create the VPN connection:
Create the Site-to-Site VPN connection between your virtual network gateway and your on-premises VPN device.
Reference:
https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-howto-site-to-site-resource-manager-portal

Explanation

Box 1: 60
One alert per minute will trigger one email per minute.
Box 2: 12
No more than 1 SMS every 5 minutes can be send, which equals 12 per hour.
Note: Rate limiting is a suspension of notifications that occurs when too many are sent to a particular phone number, email address or device. Rate limiting ensures that alerts are manageable and actionable.
The rate limit thresholds are:
SMS: No more than 1 SMS every 5 minutes.
Voice: No more than 1 Voice call every 5 minutes.
Email: No more than 100 emails in an hour.
Other actions are not rate limited.
References:
https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/monitoring-and-diagnostics/monitoring-overv

Explanation

Box 1: No
Administrator accounts are special accounts with elevated permissions. To secure them, the following restrictions apply to changing passwords of administrators:
On-premises enterprise administrators or domain administrators cannot reset their password through Self-service password reset (SSPR). They can only change their password in their on-premises environment.
Thus, we recommend not syncing on-prem AD admin accounts to Azure AD.
An administrator cannot use secret Questions & Answers as a method to reset password.
Box 2: Yes
Self-service password reset (SSPR) is an Azure Active Directory feature that enables employees to reset their passwords without needing to contact IT staff.
Box 3: Yes
References:
https://docs.microsoft.com/en-us/azure/active-directory/authentication/howto-sspr-deployment

Reference:
https://docs.microsoft.com/en-us/azure/azure-monitor/platform/autoscale-overview
https://docs.microsoft.com/en-us/azure/azure-monitor/platform/autoscale-best-practices
https://docs.microsoft.com/en-us/azure/azure-monitor/platform/autoscale-common-scale-patterns

Create the TXT record. App Services uses this record only at configuration time to verify that you own the custom domain. You can delete this TXT record after your custom domain is validated and configured in App Service.
References: https://docs.microsoft.com/en-us/azure/dns/dns-web-sites-custom-domain