Which connectivity mode should you identify?

You need to identify which connectivity mode to use when implementing App2. The solution must support the planned changes and meet the business requirements.

Which connectivity mode should you identify?
A . Direct mode over HTTPS
B. Gateway mode (using HTTPS)
C. Direct mode over TCP

Answer: C

Explanation:

Scenario: Develop an app named App2 that will run from the retail stores and query the data in account2. App2 must be limited to a single DNS endpoint when accessing account2.

By using Azure Private Link, you can connect to an Azure Cosmos account via a private endpoint. The private endpoint is a set of private IP addresses in a subnet within your virtual network.

When you’re using Private Link with an Azure Cosmos account through a direct mode connection, you can use only the TCP protocol. The HTTP protocol is not currently supported.

Reference: https://docs.microsoft.com/en-us/azure/cosmos-db/how-to-configure-private-endpoints