Fill in the blank: Browser-based Authentication sends users to a web page to acquire identities using ________.

A. User Directory

B. Captive Portal and Transparent Kerberos Authentication

C. Captive Portal

D. UserCheck

Explanation: To enable Identity Awareness:

• Log in to SmartDashboard.
• From the Network Objects tree, expand the Check Point branch.
• Double-click the Security Gateway on which to enable Identity Awareness.
• In the Software Blades section, select Identity Awareness on the Network Security tab.
  The Identity Awareness Configuration wizard opens.
• Select one or more options. These options set the methods for acquiring identities of managed and unmanaged assets.
  – AD Query – Lets the Security Gateway seamlessly identify Active Directory users and computers.
  – Browser-Based Authentication – Sends users to a Web page to acquire identities from unidentified users. If Transparent Kerberos Authentication is configured, AD users may be identified transparently.

Reference: https://sc1.checkpoint.com/documents/R76/CP_R76_IdentityAwareness_AdminGuide/62050.htm