Online Access Free 642-437 Exam Questions

Refer to the exhibit.

Cisco 642-437 Exam
When an inbound PSTN call from 4087071222 arrives at the ISDN port that is shown in the exhibit, which dial peer will be matched for the inbound leg?

• A.Although dial-peer 123 takes precedence, there is no port that is configured under dial-peer 123, therefore dial-peer 2123 will be selected.
• B.Dial-peer 123, because incoming called-number takes precedence over answer-address.
• C.Dial-peer 2123, because answer-address takes precedence over incoming called-number.
• D.Although dial-peer 123 takes precedence, there is no direct-inward-dial that is configured, therefore 2123 will be selected.
• E.The matching inbound dial peer will be selected at random.

Which QoS methodology combines strict priority queuing with class-based weighted fair queuing?

• A.IP RTP Priority
• B.RSVP
• C.Multilink PPP
• D.LLQ
• E.IP Frame Relay RTP Priority

Which of the following best describes the implementation challenges that are associated with variable-length numbering plans?

• A.the number of trunks that need to be assigned
• B.the degree in which the dial plan varies
• C.the variable number of extensions that need to be implemented
• D.the identification of the number of digits that need to be dialed before the call is routed
• E.the mapping between IP addresses and extension numbers

What is the function of TEHO in a path selection strategy?

• A.Uses the WAN link for call routing to avoid PSTN charges; in addition, the PSTN breakout should be as close as possible to the final PSTN destination.
• B.Defines each site with a unique site code.
• C.Uses the WAN link for call routing to avoid PSTN charges.
• D.Allows users to place an intersite call by dialing a site code.

DRAG DROP
Click and drag the feature on the left to the category it belongs to on the right.

Correct Answer:

Explanation:
Gateway: Supports Analog Faxes and Modems on a Voip Network
Performs Call Setup and teardown between Voip Networks & the PSTN.
CUBE. Interconnects segments of the same or different VoIP networks using different media types.
Interconnects segments of the same or different VoIP networks using different media types.
Gateway Functionality: Gateways are responsible Media stream handling and speech path
integrity, DTMF relay, Fax relay and pass-through, Digit translation and call processing, Dial peers
and codec filtering, Carrier ID handling, Termination and re-origination of signaling and media.
The Cisco Unified Border Element is a session border controller designed to provide easy, secure,
and cost-effective connectivity between independent unified communications networks or network
domains for different enterprises. It provides interconnection between incompatible applications
within the enterprise network, between different enterprises for business-to-business applications,
and between enterprise networks and service provider Session Initiation Protocol (SIP) trunks.
The Cisco Unified Border Element provides key session management capabilities, H.323 and SIP
interworking functions, and network-to-network interface security and demarcation capabilities. It
performs most of the same functions of a public switched telephone network (PSTN)-to-IP
gateway but joins two VoIP call legs. Media packets can either flow through (thus hiding the
networks from each other) or around the Cisco Unified Border Element platform.
http://www.cisco.com/en/US/docs/ios/voice/cube/configuration/guide/vb-gw-overview_ps10591_TSD_Products_Configuration_Guide_Chapter.html