Explanation

References:
https://docs.microsoft.com/en-us/azure/azure-resource-manager/management/lock-resources

Explanation

Box 1: Yes
You can assign additional account administrators in the Azure Portal.
Box 2: No
You need an Azure Active Directory account to manage a subscription, not a Microsoft account.
An account is created in the Azure Active Directory when you create the subscription. Further accounts can be created in the Azure Active Directory to manage the subscription.
Box 3: No
Resource groups are logical containers for Azure resources. However, resource groups do not contain subscriptions. Subscriptions contain resource groups.
References:
https://docs.microsoft.com/en-us/office365/enterprise/subscriptions-licenses-accounts-and-tenants-for-microsoft-

Reference:
https://azure.microsoft.com/en-gb/blog/advisor-backup-recommendations/
https://docs.microsoft.com/en-us/azure/advisor/advisor-overview
https://microsoft.github.io/AzureTipsAndTricks/blog/tip173.html

Section: Describe core solutions and management tools on Azure
Explanation:
Azure Databricks is an Apache Spark-based analytics platform. The platform consists of several components including 'MLib'. Mlib is a Machine Learning library consisting of common learning algorithms and utilities, including classification, regression, clustering, collaborative filtering, dimensionality reduction, as well as underlying optimization primitives.
Reference:
https://docs.microsoft.com/en-us/azure/azure-databricks/what-is-azure-databricks#apache-spark-based- analytics-platform