Scenario: A Citrix Engineer is required to configure remote access through NetScaler to a Citrix
StoreFront deployment for mobile device users. The engineer needs to ensure that the version of

Citrix Receiver running on the endpoint is compatible with the native Citrix StoreFront services
interface. The engineer should use the REQ.HTTP.HEADER User-Agent __________ CitrixReceiver &&
REQ.HTTP.HEADER X-Citrix-Gateway __________ session policy expression to ensure that the correct
session profile is used. (Choose the correct option to complete the sentence.)

A.
CONTAINS; EXISTS

B.
CONTAINS; NOTEXISTS

C.
NOTCONTAINS; EXISTS

D.
NOTCONTAINS; NOTEXISTS