New VCE and PDF– If you want to pass Cisco 642-457 exam successfully,do not miss to test Cisco latest Cisco 642-457 brain dumps.All Cisco 642-457 the new questions and answers were timely added, visit Flydumps.com to free download VCE player and PDF files.

QUESTION 72
What is the default value for the Drop Ad Hoc Conference service parameter?
A. Never
B. When No On-Net Parties Remain in the Conference
C. When No Off-Net Parties Remain in the Conference
D. Drop Ad Hoc Conference When Creator Leaves

Correct Answer: A Section: Dial Plan Explanation
Explanation/Reference:
Ok System – Service Parameters – Server x.x.x.x – Service – Cisco CallManager (Active) – Clusterwide Parameters (Feature – Conference) – Drop Ad Hoc Conference – Never (default)
QUESTION 73
An update of the configuration using the Cisco CTL client not needed when _______.
A. a Cisco UnifiedCallManager has been removed
B. an LSC of the IP phone is upgraded
C. a security token is added to the system
D. an IP address of the Cisco TFTP server has been changed
Correct Answer: B Section: Questions not in the test Explanation

Explanation/Reference:
(Source: Configuring Cisco IP Telephony Authentication and Encryption)
QUESTION 74
You are the Cisco Unified Communications Manager in Certpaper.com. You use a remote site MGCP gateway to provide redundancy when connectivity to the central Cisco Unified Communications Manager cluster is lost. How to enable IP phones to establish calls to the PSTN when they have registered with the gateway? (Choose three.)
A. POTS dial peers must be added to the gateway to route calls from the IP phonesto the PSTN.

 » Read more about: Cisco 642-457 Study Guide Book, The Most Effective Cisco 642-457 Brain Demos Is What You Need To Take  »