You manage a Microsoft Exchange server

that is on an isolated network. The server has no internet access from the corporate network.

The organization purchases an Office 365 subscription and plans to migrate to Office 365.

You need to recommend a migration strategy that does not require data

to be sent over the internet.

Which migration strategy should you recommend?

A. staged migration

B. Office 365 Import Service

C. cutover migration

D. hybrid migration

Explanation:

You can use the Office 365 Import Service to either upload the

PST files through a network, or to mail the PST files in a drive that you prepare.

References: https://support.office.com/en-us/article/Ways-to-migrate-multiple-email-accounts-to-Office-365-0a4913fe-60fb-498f-9155-a86516418842