Implementing Cisco Collaboration Cloud and Edge Infrastructure (CLCEI) — Question 54

How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?

Answer options

• A. block the call with a call policy rule in the Expressway-E
• B. add the specific URI in the firewall section of the Expressway and block it
• C. configure FAC for the destination alias on the Expressway
• D. add a search rule route all calls to the Cisco UCM

Correct answer: C

Explanation

The correct answer is C because configuring FAC (Feature Access Codes) for the destination alias effectively restricts access to that internal address. Options A and B would not specifically prevent the external caller from reaching the internal address, while option D would redirect calls instead of blocking them.