642-457 試験問題を無料オンラインアクセス

Which method can be used to address variable-length dial plans?

• A.Overlap sending and receiving.
• B.Use the @macro on the route pattern
• C.Use nested translation patterns to eliminate inter-digit timeout
• D.Add a prefix for all calls that are longer than 10-digits long
• E.Use MGCP gateways, which support variable-length dial plans

How is a SIP trunk in Cisco Unified Communications Manager configured for SIP precondition?

• A.SIP precondition is configured by selecting E2E for RSVP over SIP on the default SIP profile assigned to the SIP trunk.
• B.The configuration is automatically selected when RSVP is enabled for the location assigned to the trunk.
• C.The configuration is done by selecting a SIP precondition trunk for trunk type.
• D.SIP precondition is configured by configuring a new SIP profile and selecting E2E for RSVP over SIP. The new SIP profile must then be assigned to the SIP trunk.

Which statement about AAR functionality is true?

• A.AAR reroutes calls through the WAN when the PSTN connection fails.
• B.AAR reroutes calls through the PSTN upon WAN failure.
• C.AAR reroutes calls through the PSTN when Cisco Unified Communications Manager CAC blocks a call.
• D.AAR reroutes calls to another phone number when a Cisco IP Phone unregisters.

You need to verify if the Media Control Gateway Protocol gateway is enabled and active. Which command should you use for this purpose?

• A.show running-config
• B.show running-config gateway
• C.show fallback-mgcp
• D.show fallback-mgcp ccm-manager
• E.show ccm-manager fallback-mgcp
• F.show gateway

Refer to the exhibit.

Which trunks would be most suitable for Connection Y?

• A.an H.225 trunk (gatekeeper-controlled)
• B.No extra connections are required. As long as IP connectivity exists, you need only configure a route pattern for each site. The Cisco Unified Communications Manager will automatically forward the calls over the WAN if the destination directory number is not registered locally.
• C.intercluster trunk (nongatekeeper-controlled)
• D.a SIP trunk on the U.S. cluster and an intercluster trunk on the remote cluster
• E.intercluster trunk (gatekeeper-controlled)