Scale up: Get more CPU, memory, disk space, and extra features like dedicated virtual machines (VMs), custom domains and certificates, staging slots, autoscaling, and more.
You scale up by changing the pricing tier of the App Service plan that your app belongs to.
Reference:
https://docs.microsoft.com/en-us/azure/app-service/manage-scale-up

Azure Import/Export service supports the following of storage accounts:
Standard General Purpose v2 storage accounts (recommended for most scenarios) Blob Storage accounts General Purpose v1 storage accounts (both Classic or Azure Resource Manager deployments), Azure Import/Export service supports the following storage types Import supports Azure Blob storage and Azure File storage Export supports Azure Blob storage Reference:
https://docs.microsoft.com/en-us/azure/storage/common/storage-import-export-requirements

Reference:
https://docs.microsoft.com/en-us/azure/virtual-network/network-security-group-how-it-works

Ensure that "Enable an 'All Users' group in the directory" policy is set to "Yes" in your Azure Active Directory (AD) settings in order to enable the "All Users" group for centralized access administration. This group represents the entire collection of the Active Directory users, including guests and external users, that you can use to make the access permissions easier to manage within your directory.
Incorrect Answers:
A, B: User3 and User4 are guests already.
Note: By default, all users and guests in your directory can invite guests even if they're not assigned to an admin role. External collaboration settings let you turn guest invitations on or off for different types of users in your organization. You can also delegate invitations to individual users by assigning roles that allow them to invite guests.
Reference:
https://www.cloudconformity.com/knowledge-base/azure/ActiveDirectory/enable-all-users-group.html