Online Access Free 642-457 Practice Test

In a Centralized Call processing architecture, you have deployed Extension Mobility (EM) feature. After the deployment of EM, when one of the end-users tries to login to the IP phone, the Error 25 is displayed on the screen. What three things should you do to resolve this issue? (Choose three.)

• A.subscribe device profile to EM phone service in case the enterprise subscription of EM Service is disabled
• B.upgrade the firmware of the IP Phone to the latest version
• C.activate EM feature service under Cisco Unified Serviceability
• D.update EM Phone Service URL to point to the publisher
• E.subscribe the MAC address of the IP Phone to EM Service
• F.associate EM Device profile with the end-user

Which statement about technology implementation strategy is true?

• A.SRST can be configured to function with no Cisco Unified Communications Manager cluster in the enterprise.
• B.Cisco Unified Communications Manager Express can be configured to function with no Cisco Unified Communications Manager cluster in the enterprise.
• C.SRST and MGCP fallback can be configured to function with no Cisco Unified Communications Manager cluster in the enterprise.
• D.Cisco Unified Communications Manager Express in SRST mode can be configured to function with no Cisco Unified Communications Manager cluster in the enterprise.

Which statement is true when considering a Cisco VoIP environment for regional configuration?

• A.To deploy a Cisco H.323 gatekeeper, you must configure MTP resources on the gatekeeper and only use G.711 between regions.
• B.The default codec does not matter if you have defined a hardware MTP in your Cisco Unified Communications Manager environment.
• C.G.711 requires 128K of bandwidth per call.
• D.G.729 requires 24K of bandwidth per call.

Refer to the exhibit.

What media resource should be configured in Cisco Unified Communications Manager?

• A.Cisco Media Termination Point Hardware
• B.Cisco IOS Enhanced Media Termination Point Cisco
• C.Cisco Media Termination Point Hardware (WS-SVC-CMM)
• D.Cisco IOS Media Termination Point

Refer to the exhibit.

What must be configured on the HQ Cisco Unified Communications Manager to allow HQ users to dial the SAF learned directory number pattern 3XXX?

• A.Route pattern 3XXX should be configured and made available to HQ phone users through the phone AAR CSS.
• B.Route pattern 3XXX should be configured and made available to HQ users through the phone CSS.
• C.The SAF partition assigned to the SAF learned patterns must be available to the HQ phone users through the phone CSS.
• D.The SAF partition assigned to the SAF learned patterns must be available to the HQ phone users through the phone AAR CSS.
• E.The SAF directory number pattern 3XXX will be made available to all users automatically as soon as the SAF partition is selected.