What Extension Mobility parameter limits the number of phones to which a user may log in?

A.
Maximum login Limit

B.
Maximum concurrent request

C.
Multi-concurrent usage

D.
Multi-login behavior

Explanation:

Multi login behavior: specifies the behavior for multiple attempted logins by the same user on different devices. The choices are to allow, not allow, and cause a previous login to automatically log out.
Incorrect answers:
Maximum concurrent request: specifies the maximum number of login or logout operations which can occur simultaneously. This maximum prevents the Extension Mobility service from consuming excessive system resources. The parameters maximum login Limit or multi concurrent usage do not exist.